1876 строки
66 KiB
C
1876 строки
66 KiB
C
/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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* Copyright (c) 2004-2006 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* reserved.
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* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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* All rights reserved.
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* Copyright (c) 2011-2012 Cisco Systems, Inc. All rights reserved.
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* Copyright (c) 2012-2013 Los Alamos National Security, LLC.
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* All rights reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*/
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#include "opal_config.h"
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include "opal/runtime/opal.h"
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#include "opal/constants.h"
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#include "opal/util/argv.h"
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#include "opal/util/output.h"
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#include "opal/util/show_help.h"
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#include "opal/threads/tsd.h"
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#include "opal/mca/hwloc/hwloc.h"
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#include "opal/mca/hwloc/base/base.h"
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/*
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* Provide the hwloc object that corresponds to the given
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* LOGICAL processor id. Remember: "processor" here [usually] means "core" --
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* except that on some platforms, hwloc won't find any cores; it'll
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* only find PUs (!). On such platforms, then do the same calculation
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* but with PUs instead of COREs.
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*/
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static hwloc_obj_t get_pu(hwloc_topology_t topo, int lid)
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{
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hwloc_obj_type_t obj_type = HWLOC_OBJ_CORE;
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hwloc_obj_t obj;
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/* hwloc isn't able to find cores on all platforms. Example:
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PPC64 running RHEL 5.4 (linux kernel 2.6.18) only reports NUMA
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nodes and PU's. Fine.
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However, note that hwloc_get_obj_by_type() will return NULL in
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2 (effectively) different cases:
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- no objects of the requested type were found
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- the Nth object of the requested type was not found
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So first we have to see if we can find *any* cores by looking
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for the 0th core. If we find it, then try to find the Nth
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core. Otherwise, try to find the Nth PU. */
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if (NULL == hwloc_get_obj_by_type(topo, HWLOC_OBJ_CORE, 0)) {
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obj_type = HWLOC_OBJ_PU;
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}
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/* Now do the actual lookup. */
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obj = hwloc_get_obj_by_type(topo, obj_type, lid);
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if (NULL == obj) {
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opal_show_help("help-opal-hwloc-base.txt",
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"logical-cpu-not-found", true,
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opal_hwloc_base_cpu_set);
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return NULL;
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}
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/* Found the right core (or PU). Return the object */
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return obj;
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}
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/* determine the node-level available cpuset based on
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* online vs allowed vs user-specified cpus
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*/
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int opal_hwloc_base_filter_cpus(hwloc_topology_t topo)
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{
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hwloc_obj_t root, pu;
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hwloc_cpuset_t avail = NULL, pucpus, res;
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opal_hwloc_topo_data_t *sum;
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char **ranges=NULL, **range=NULL;
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int idx, cpu, start, end;
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root = hwloc_get_root_obj(topo);
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if (NULL == root->userdata) {
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root->userdata = (void*)OBJ_NEW(opal_hwloc_topo_data_t);
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}
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sum = (opal_hwloc_topo_data_t*)root->userdata;
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/* should only ever enter here once, but check anyway */
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if (NULL != sum->available) {
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OPAL_OUTPUT_VERBOSE((5, opal_hwloc_base_framework.framework_output,
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"hwloc:base:filter_cpus specified - already done"));
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return OPAL_SUCCESS;
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}
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/* process any specified default cpu set against this topology */
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if (NULL == opal_hwloc_base_cpu_set) {
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/* get the root available cpuset */
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avail = hwloc_bitmap_alloc();
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hwloc_bitmap_and(avail, root->online_cpuset, root->allowed_cpuset);
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OPAL_OUTPUT_VERBOSE((5, opal_hwloc_base_framework.framework_output,
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"hwloc:base: no cpus specified - using root available cpuset"));
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} else {
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OPAL_OUTPUT_VERBOSE((5, opal_hwloc_base_framework.framework_output,
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"hwloc:base: filtering cpuset"));
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/* find the specified logical cpus */
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ranges = opal_argv_split(opal_hwloc_base_cpu_set, ',');
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avail = hwloc_bitmap_alloc();
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hwloc_bitmap_zero(avail);
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res = hwloc_bitmap_alloc();
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pucpus = hwloc_bitmap_alloc();
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for (idx=0; idx < opal_argv_count(ranges); idx++) {
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range = opal_argv_split(ranges[idx], '-');
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switch (opal_argv_count(range)) {
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case 1:
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/* only one cpu given - get that object */
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cpu = strtoul(range[0], NULL, 10);
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if (NULL == (pu = get_pu(topo, cpu))) {
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opal_argv_free(ranges);
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opal_argv_free(range);
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return OPAL_ERROR;
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}
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hwloc_bitmap_and(pucpus, pu->online_cpuset, pu->allowed_cpuset);
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hwloc_bitmap_or(res, avail, pucpus);
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hwloc_bitmap_copy(avail, res);
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break;
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case 2:
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/* range given */
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start = strtoul(range[0], NULL, 10);
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end = strtoul(range[1], NULL, 10);
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for (cpu=start; cpu <= end; cpu++) {
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if (NULL == (pu = get_pu(topo, cpu))) {
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opal_argv_free(ranges);
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opal_argv_free(range);
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hwloc_bitmap_free(avail);
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return OPAL_ERROR;
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}
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hwloc_bitmap_and(pucpus, pu->online_cpuset, pu->allowed_cpuset);
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hwloc_bitmap_or(res, avail, pucpus);
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hwloc_bitmap_copy(avail, res);
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}
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break;
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default:
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return OPAL_ERR_BAD_PARAM;
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}
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opal_argv_free(range);
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}
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if (NULL != ranges) {
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opal_argv_free(ranges);
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}
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hwloc_bitmap_free(res);
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hwloc_bitmap_free(pucpus);
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}
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/* cache this info */
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sum->available = avail;
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return OPAL_SUCCESS;
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}
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static void fill_cache_line_size(void)
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{
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int i = 0;
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unsigned size;
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hwloc_obj_t obj;
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bool found = false;
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/* Look for the smallest L2 cache size */
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size = 4096;
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while (1) {
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obj = opal_hwloc_base_get_obj_by_type(opal_hwloc_topology,
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HWLOC_OBJ_CACHE, 2,
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i, OPAL_HWLOC_LOGICAL);
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if (NULL == obj) {
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break;
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} else {
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found = true;
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if (NULL != obj->attr &&
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size > obj->attr->cache.linesize) {
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size = obj->attr->cache.linesize;
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}
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}
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++i;
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}
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/* If we found an L2 cache size in the hwloc data, save it in
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opal_cache_line_size. Otherwise, we'll leave whatever default
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was set in opal_init.c */
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if (found) {
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opal_cache_line_size = (int) size;
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}
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}
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int opal_hwloc_base_get_topology(void)
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{
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int rc;
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OPAL_OUTPUT_VERBOSE((5, opal_hwloc_base_framework.framework_output,
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"hwloc:base:get_topology"));
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if (0 != hwloc_topology_init(&opal_hwloc_topology) ||
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0 != hwloc_topology_set_flags(opal_hwloc_topology,
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(HWLOC_TOPOLOGY_FLAG_WHOLE_SYSTEM |
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HWLOC_TOPOLOGY_FLAG_IO_DEVICES)) ||
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0 != hwloc_topology_load(opal_hwloc_topology)) {
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return OPAL_ERR_NOT_SUPPORTED;
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}
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/* filter the cpus thru any default cpu set */
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rc = opal_hwloc_base_filter_cpus(opal_hwloc_topology);
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if (OPAL_SUCCESS != rc) {
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return rc;
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}
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/* fill opal_cache_line_size global with the smallest L1 cache
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line size */
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fill_cache_line_size();
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return rc;
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}
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int opal_hwloc_base_set_topology(char *topofile)
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{
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hwloc_obj_t obj;
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unsigned j, k;
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struct hwloc_topology_support *support;
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int rc;
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OPAL_OUTPUT_VERBOSE((5, opal_hwloc_base_framework.framework_output,
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"hwloc:base:set_topology"));
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if (NULL != opal_hwloc_topology) {
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hwloc_topology_destroy(opal_hwloc_topology);
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}
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if (0 != hwloc_topology_init(&opal_hwloc_topology)) {
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return OPAL_ERR_NOT_SUPPORTED;
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}
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if (0 != hwloc_topology_set_xml(opal_hwloc_topology, topofile)) {
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hwloc_topology_destroy(opal_hwloc_topology);
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return OPAL_ERR_NOT_SUPPORTED;
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}
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/* since we are loading this from an external source, we have to
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* explicitly set a flag so hwloc sets things up correctly
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*/
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if (0 != hwloc_topology_set_flags(opal_hwloc_topology,
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(HWLOC_TOPOLOGY_FLAG_IS_THISSYSTEM |
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HWLOC_TOPOLOGY_FLAG_WHOLE_SYSTEM |
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HWLOC_TOPOLOGY_FLAG_IO_DEVICES))) {
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hwloc_topology_destroy(opal_hwloc_topology);
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return OPAL_ERR_NOT_SUPPORTED;
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}
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if (0 != hwloc_topology_load(opal_hwloc_topology)) {
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hwloc_topology_destroy(opal_hwloc_topology);
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return OPAL_ERR_NOT_SUPPORTED;
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}
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/* remove the hostname from the topology. Unfortunately, hwloc
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* decided to add the source hostname to the "topology", thus
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* rendering it unusable as a pure topological description. So
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* we remove that information here.
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*/
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obj = hwloc_get_root_obj(opal_hwloc_topology);
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for (k=0; k < obj->infos_count; k++) {
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if (NULL == obj->infos[k].name ||
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NULL == obj->infos[k].value) {
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continue;
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}
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if (0 == strncmp(obj->infos[k].name, "HostName", strlen("HostName"))) {
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free(obj->infos[k].name);
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free(obj->infos[k].value);
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/* left justify the array */
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for (j=k; j < obj->infos_count-1; j++) {
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obj->infos[j] = obj->infos[j+1];
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}
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obj->infos[obj->infos_count-1].name = NULL;
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obj->infos[obj->infos_count-1].value = NULL;
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obj->infos_count--;
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break;
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}
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}
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/* unfortunately, hwloc does not include support info in its
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* xml output :-(( We default to assuming it is present as
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* systems that use this option are likely to provide
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* binding support
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*/
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support = (struct hwloc_topology_support*)hwloc_topology_get_support(opal_hwloc_topology);
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support->cpubind->set_thisproc_cpubind = true;
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support->membind->set_thisproc_membind = true;
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/* filter the cpus thru any default cpu set */
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rc = opal_hwloc_base_filter_cpus(opal_hwloc_topology);
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if (OPAL_SUCCESS != rc) {
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return rc;
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}
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/* fill opal_cache_line_size global with the smallest L1 cache
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line size */
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fill_cache_line_size();
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/* all done */
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return OPAL_SUCCESS;
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}
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static void free_object(hwloc_obj_t obj)
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{
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opal_hwloc_obj_data_t *data;
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unsigned k;
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/* free any data hanging on this object */
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if (NULL != obj->userdata) {
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data = (opal_hwloc_obj_data_t*)obj->userdata;
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OBJ_RELEASE(data);
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obj->userdata = NULL;
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}
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/* loop thru our children */
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for (k=0; k < obj->arity; k++) {
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free_object(obj->children[k]);
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}
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}
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void opal_hwloc_base_free_topology(hwloc_topology_t topo)
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{
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hwloc_obj_t obj;
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opal_hwloc_topo_data_t *rdata;
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unsigned k;
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obj = hwloc_get_root_obj(topo);
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/* release the root-level userdata */
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if (NULL != obj->userdata) {
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rdata = (opal_hwloc_topo_data_t*)obj->userdata;
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OBJ_RELEASE(rdata);
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obj->userdata = NULL;
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}
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/* now recursively descend and release userdata
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* in the rest of the objects
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*/
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for (k=0; k < obj->arity; k++) {
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free_object(obj->children[k]);
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}
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hwloc_topology_destroy(topo);
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}
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void opal_hwloc_base_get_local_cpuset(void)
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{
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hwloc_obj_t root;
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hwloc_cpuset_t base_cpus;
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if (NULL != opal_hwloc_topology) {
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if (NULL == opal_hwloc_my_cpuset) {
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opal_hwloc_my_cpuset = hwloc_bitmap_alloc();
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}
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/* get the cpus we are bound to */
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if (hwloc_get_cpubind(opal_hwloc_topology,
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opal_hwloc_my_cpuset,
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HWLOC_CPUBIND_PROCESS) < 0) {
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/* we are not bound - use the root's available cpuset */
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root = hwloc_get_root_obj(opal_hwloc_topology);
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base_cpus = opal_hwloc_base_get_available_cpus(opal_hwloc_topology, root);
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hwloc_bitmap_copy(opal_hwloc_my_cpuset, base_cpus);
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}
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}
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}
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int opal_hwloc_base_report_bind_failure(const char *file,
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int line,
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const char *msg, int rc)
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{
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static int already_reported = 0;
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if (!already_reported &&
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OPAL_HWLOC_BASE_MBFA_SILENT != opal_hwloc_base_mbfa) {
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char hostname[64];
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gethostname(hostname, sizeof(hostname));
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opal_show_help("help-opal-hwloc-base.txt", "mbind failure", true,
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hostname, getpid(), file, line, msg,
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(OPAL_HWLOC_BASE_MBFA_WARN == opal_hwloc_base_mbfa) ?
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"Warning -- your job will continue, but possibly with degraded performance" :
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"ERROR -- your job may abort or behave erraticly");
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already_reported = 1;
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return rc;
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}
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return OPAL_SUCCESS;
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}
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hwloc_cpuset_t opal_hwloc_base_get_available_cpus(hwloc_topology_t topo,
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hwloc_obj_t obj)
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{
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hwloc_obj_t root;
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hwloc_cpuset_t avail, specd=NULL;
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opal_hwloc_topo_data_t *rdata;
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opal_hwloc_obj_data_t *data;
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OPAL_OUTPUT_VERBOSE((5, opal_hwloc_base_framework.framework_output,
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"hwloc:base: get available cpus"));
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/* get the node-level information */
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root = hwloc_get_root_obj(topo);
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rdata = (opal_hwloc_topo_data_t*)root->userdata;
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/* bozo check */
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if (NULL == rdata) {
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rdata = OBJ_NEW(opal_hwloc_topo_data_t);
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root->userdata = (void*)rdata;
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OPAL_OUTPUT_VERBOSE((5, opal_hwloc_base_framework.framework_output,
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"hwloc:base:get_available_cpus first time - filtering cpus"));
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}
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/* ensure the topo-level cpuset was prepared */
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opal_hwloc_base_filter_cpus(topo);
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/* are we asking about the root object? */
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if (obj == root) {
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OPAL_OUTPUT_VERBOSE((5, opal_hwloc_base_framework.framework_output,
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"hwloc:base:get_available_cpus root object"));
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return rdata->available;
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}
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/* some hwloc object types don't have cpus */
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if (NULL == obj->online_cpuset || NULL == obj->allowed_cpuset) {
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return NULL;
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}
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/* see if we already have this info */
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if (NULL == (data = (opal_hwloc_obj_data_t*)obj->userdata)) {
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/* nope - create the object */
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data = OBJ_NEW(opal_hwloc_obj_data_t);
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obj->userdata = (void*)data;
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}
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/* do we have the cpuset */
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if (NULL != data->available) {
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return data->available;
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}
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/* find the available processors on this object */
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avail = hwloc_bitmap_alloc();
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hwloc_bitmap_and(avail, obj->online_cpuset, obj->allowed_cpuset);
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/* filter this against the node-available processors */
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if (NULL == rdata->available) {
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hwloc_bitmap_free(avail);
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return NULL;
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}
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specd = hwloc_bitmap_alloc();
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hwloc_bitmap_and(specd, avail, rdata->available);
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/* cache the info */
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data->available = specd;
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/* cleanup */
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hwloc_bitmap_free(avail);
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return specd;
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}
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static void df_search_cores(hwloc_obj_t obj, unsigned int *cnt)
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{
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unsigned k;
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if (HWLOC_OBJ_CORE == obj->type) {
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*cnt += 1;
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return;
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}
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for (k=0; k < obj->arity; k++) {
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df_search_cores(obj->children[k], cnt);
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}
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return;
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}
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/* determine if there is a single cpu in a bitmap */
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bool opal_hwloc_base_single_cpu(hwloc_cpuset_t cpuset)
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{
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int i;
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bool one=false;
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|
|
/* count the number of bits that are set - there is
|
|
* one bit for each available pu. We could just
|
|
* subtract the first and last indices, but there
|
|
* may be "holes" in the bitmap corresponding to
|
|
* offline or unallowed cpus - so we have to
|
|
* search for them. Return false if we anything
|
|
* other than one
|
|
*/
|
|
for (i=hwloc_bitmap_first(cpuset);
|
|
i <= hwloc_bitmap_last(cpuset);
|
|
i++) {
|
|
if (hwloc_bitmap_isset(cpuset, i)) {
|
|
if (one) {
|
|
return false;
|
|
}
|
|
one = true;
|
|
}
|
|
}
|
|
|
|
return one;
|
|
}
|
|
|
|
/* get the number of pu's under a given hwloc object */
|
|
unsigned int opal_hwloc_base_get_npus(hwloc_topology_t topo,
|
|
hwloc_obj_t obj)
|
|
{
|
|
opal_hwloc_obj_data_t *data;
|
|
int i;
|
|
unsigned int cnt;
|
|
hwloc_cpuset_t cpuset;
|
|
|
|
/* if the object is a hwthread (i.e., HWLOC_OBJ_PU),
|
|
* then the answer is always 1 since there isn't
|
|
* anything underneath it
|
|
*/
|
|
if (HWLOC_OBJ_PU == obj->type) {
|
|
return 1;
|
|
}
|
|
|
|
/* if the object is a core (i.e., HWLOC_OBJ_CORE) and
|
|
* we are NOT treating hwthreads as independent cpus,
|
|
* then the answer is also 1 since we don't allow
|
|
* you to use the underlying hwthreads as separate
|
|
* entities
|
|
*/
|
|
if (HWLOC_OBJ_CORE == obj->type &&
|
|
!opal_hwloc_use_hwthreads_as_cpus) {
|
|
return 1;
|
|
}
|
|
|
|
data = (opal_hwloc_obj_data_t*)obj->userdata;
|
|
|
|
if (NULL == data || 0 == data->npus) {
|
|
if (!opal_hwloc_use_hwthreads_as_cpus) {
|
|
/* if we are treating cores as cpus, then we really
|
|
* want to know how many cores are in this object.
|
|
* hwloc sets a bit for each "pu", so we can't just
|
|
* count bits in this case as there may be more than
|
|
* one hwthread/core. Instead, find the number of cores
|
|
* in the system
|
|
*
|
|
* NOTE: remember, hwloc can't find "cores" in all
|
|
* environments. So first check to see if it found
|
|
* "core" at all.
|
|
*/
|
|
if (NULL != hwloc_get_obj_by_type(topo, HWLOC_OBJ_CORE, 0)) {
|
|
/* starting at the incoming obj, do a down-first search
|
|
* and count the number of cores under it
|
|
*/
|
|
cnt = 0;
|
|
df_search_cores(obj, &cnt);
|
|
}
|
|
} else {
|
|
|
|
/* if we are treating cores as cpus, or the system can't detect
|
|
* "cores", then get the available cpuset for this object - this will
|
|
* create and store the data
|
|
*/
|
|
if (NULL == (cpuset = opal_hwloc_base_get_available_cpus(topo, obj))) {
|
|
return 0;
|
|
}
|
|
/* count the number of bits that are set - there is
|
|
* one bit for each available pu. We could just
|
|
* subtract the first and last indices, but there
|
|
* may be "holes" in the bitmap corresponding to
|
|
* offline or unallowed cpus - so we have to
|
|
* search for them
|
|
*/
|
|
for (i=hwloc_bitmap_first(cpuset), cnt=0;
|
|
i <= hwloc_bitmap_last(cpuset);
|
|
i++) {
|
|
if (hwloc_bitmap_isset(cpuset, i)) {
|
|
cnt++;
|
|
}
|
|
}
|
|
}
|
|
/* cache the info */
|
|
if (NULL == data) {
|
|
data = OBJ_NEW(opal_hwloc_obj_data_t);
|
|
obj->userdata = (void*)data;
|
|
}
|
|
data->npus = cnt;
|
|
}
|
|
|
|
return data->npus;
|
|
}
|
|
|
|
unsigned int opal_hwloc_base_get_obj_idx(hwloc_topology_t topo,
|
|
hwloc_obj_t obj,
|
|
opal_hwloc_resource_type_t rtype)
|
|
{
|
|
unsigned cache_level=0;
|
|
opal_hwloc_obj_data_t *data;
|
|
hwloc_obj_t ptr;
|
|
unsigned int nobjs, i;
|
|
|
|
OPAL_OUTPUT_VERBOSE((5, opal_hwloc_base_framework.framework_output,
|
|
"hwloc:base:get_idx"));
|
|
|
|
/* see if we already have the info */
|
|
data = (opal_hwloc_obj_data_t*)obj->userdata;
|
|
|
|
if (NULL == data) {
|
|
data = OBJ_NEW(opal_hwloc_obj_data_t);
|
|
obj->userdata = (void*)data;
|
|
}
|
|
|
|
if (data->idx < UINT_MAX) {
|
|
OPAL_OUTPUT_VERBOSE((5, opal_hwloc_base_framework.framework_output,
|
|
"hwloc:base:get_idx already have data: %u",
|
|
data->idx));
|
|
return data->idx;
|
|
}
|
|
|
|
/* determine the number of objects of this type */
|
|
if (HWLOC_OBJ_CACHE == obj->type) {
|
|
cache_level = obj->attr->cache.depth;
|
|
}
|
|
nobjs = opal_hwloc_base_get_nbobjs_by_type(topo, obj->type, cache_level, rtype);
|
|
|
|
OPAL_OUTPUT_VERBOSE((5, opal_hwloc_base_framework.framework_output,
|
|
"hwloc:base:get_idx found %u objects of type %s:%u",
|
|
nobjs, hwloc_obj_type_string(obj->type), cache_level));
|
|
|
|
/* find this object */
|
|
for (i=0; i < nobjs; i++) {
|
|
ptr = opal_hwloc_base_get_obj_by_type(topo, obj->type, cache_level, i, rtype);
|
|
if (ptr == obj) {
|
|
data->idx = i;
|
|
return i;
|
|
}
|
|
}
|
|
/* if we get here, it wasn't found */
|
|
opal_show_help("help-opal-hwloc-base.txt",
|
|
"obj-idx-failed", true,
|
|
hwloc_obj_type_string(obj->type), cache_level);
|
|
return UINT_MAX;
|
|
}
|
|
|
|
/* hwloc treats cache objects as special
|
|
* cases. Instead of having a unique type for each cache level,
|
|
* there is a single cache object type, and the level is encoded
|
|
* in an attribute union. So looking for cache objects involves
|
|
* a multi-step test :-(
|
|
*
|
|
* And, of course, we make things even worse because we don't
|
|
* always care about what is physically or logically present,
|
|
* but rather what is available to us. For example, we don't
|
|
* want to map or bind to a cpu that is offline, or one that
|
|
* we aren't allowed by use by the OS. So we have to also filter
|
|
* the search to avoid those objects that don't have any cpus
|
|
* we can use :-((
|
|
*/
|
|
static hwloc_obj_t df_search(hwloc_topology_t topo,
|
|
hwloc_obj_t start,
|
|
hwloc_obj_type_t target,
|
|
unsigned cache_level,
|
|
unsigned int nobj,
|
|
opal_hwloc_resource_type_t rtype,
|
|
unsigned int *idx,
|
|
unsigned int *num_objs)
|
|
{
|
|
unsigned k;
|
|
hwloc_obj_t obj;
|
|
opal_hwloc_obj_data_t *data;
|
|
|
|
if (target == start->type) {
|
|
if (HWLOC_OBJ_CACHE == start->type && cache_level != start->attr->cache.depth) {
|
|
goto notfound;
|
|
}
|
|
if (OPAL_HWLOC_LOGICAL == rtype) {
|
|
/* the hwloc tree is composed of LOGICAL objects, so the only
|
|
* time we come here is when we are looking for logical caches
|
|
*/
|
|
if (NULL != num_objs) {
|
|
/* we are counting the number of caches at this level */
|
|
*num_objs += 1;
|
|
} else if (*idx == nobj) {
|
|
/* found the specific instance of the cache level being sought */
|
|
return start;
|
|
}
|
|
*idx += 1;
|
|
return NULL;
|
|
}
|
|
if (OPAL_HWLOC_PHYSICAL == rtype) {
|
|
/* the PHYSICAL object number is stored as the os_index. When
|
|
* counting physical objects, we can't just count the number
|
|
* that are in the hwloc tree as the only entries in the tree
|
|
* are LOGICAL objects - i.e., any physical gaps won't show. So
|
|
* we instead return the MAX os_index, as this is the best we
|
|
* can do to tell you how many PHYSICAL objects are in the system.
|
|
*
|
|
* NOTE: if the last PHYSICAL object is not present (e.g., the last
|
|
* socket on the node is empty), then the count we return will
|
|
* be wrong!
|
|
*/
|
|
if (NULL != num_objs) {
|
|
/* we are counting the number of these objects */
|
|
if (*num_objs < (unsigned int)start->os_index) {
|
|
*num_objs = (unsigned int)start->os_index;
|
|
}
|
|
} else if (*idx == nobj) {
|
|
/* found the specific instance of the cache level being sought */
|
|
return start;
|
|
}
|
|
*idx += 1;
|
|
return NULL;
|
|
}
|
|
if (OPAL_HWLOC_AVAILABLE == rtype) {
|
|
/* check - do we already know the index of this object */
|
|
data = (opal_hwloc_obj_data_t*)start->userdata;
|
|
if (NULL == data) {
|
|
data = OBJ_NEW(opal_hwloc_obj_data_t);
|
|
start->userdata = (void*)data;
|
|
}
|
|
/* if we already know our location and it matches,
|
|
* then we are good
|
|
*/
|
|
if (UINT_MAX != data->idx && data->idx == nobj) {
|
|
return start;
|
|
}
|
|
/* see if we already know our available cpuset */
|
|
if (NULL == data->available) {
|
|
data->available = opal_hwloc_base_get_available_cpus(topo, start);
|
|
}
|
|
if (NULL != data->available && !hwloc_bitmap_iszero(data->available)) {
|
|
if (NULL != num_objs) {
|
|
*num_objs += 1;
|
|
} else if (*idx == nobj) {
|
|
/* cache the location */
|
|
data->idx = *idx;
|
|
return start;
|
|
}
|
|
*idx += 1;
|
|
}
|
|
return NULL;
|
|
}
|
|
/* if it wasn't one of the above, then we are lost */
|
|
return NULL;
|
|
}
|
|
|
|
notfound:
|
|
for (k=0; k < start->arity; k++) {
|
|
obj = df_search(topo, start->children[k], target, cache_level, nobj, rtype, idx, num_objs);
|
|
if (NULL != obj) {
|
|
return obj;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
unsigned int opal_hwloc_base_get_nbobjs_by_type(hwloc_topology_t topo,
|
|
hwloc_obj_type_t target,
|
|
unsigned cache_level,
|
|
opal_hwloc_resource_type_t rtype)
|
|
{
|
|
unsigned int num_objs, idx;
|
|
hwloc_obj_t obj;
|
|
opal_list_item_t *item;
|
|
opal_hwloc_summary_t *sum;
|
|
opal_hwloc_topo_data_t *data;
|
|
int rc;
|
|
|
|
/* bozo check */
|
|
if (NULL == topo) {
|
|
OPAL_OUTPUT_VERBOSE((5, opal_hwloc_base_framework.framework_output,
|
|
"hwloc:base:get_nbobjs NULL topology"));
|
|
return 0;
|
|
}
|
|
|
|
/* if we want the number of LOGICAL objects, we can just
|
|
* use the hwloc accessor to get it, unless it is a CACHE
|
|
* as these are treated as special cases
|
|
*/
|
|
if (OPAL_HWLOC_LOGICAL == rtype && HWLOC_OBJ_CACHE != target) {
|
|
/* we should not get an error back, but just in case... */
|
|
if (0 > (rc = hwloc_get_nbobjs_by_type(topo, target))) {
|
|
opal_output(0, "UNKNOWN HWLOC ERROR");
|
|
return 0;
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
/* for everything else, we have to do some work */
|
|
num_objs = 0;
|
|
idx = 0;
|
|
obj = hwloc_get_root_obj(topo);
|
|
|
|
/* first see if the topology already has this summary */
|
|
data = (opal_hwloc_topo_data_t*)obj->userdata;
|
|
if (NULL == data) {
|
|
data = OBJ_NEW(opal_hwloc_topo_data_t);
|
|
obj->userdata = (void*)data;
|
|
} else {
|
|
for (item = opal_list_get_first(&data->summaries);
|
|
item != opal_list_get_end(&data->summaries);
|
|
item = opal_list_get_next(item)) {
|
|
sum = (opal_hwloc_summary_t*)item;
|
|
if (target == sum->type &&
|
|
cache_level == sum->cache_level &&
|
|
rtype == sum->rtype) {
|
|
/* yep - return the value */
|
|
OPAL_OUTPUT_VERBOSE((5, opal_hwloc_base_framework.framework_output,
|
|
"hwloc:base:get_nbojbs pre-existing data %u of %s:%u",
|
|
sum->num_objs, hwloc_obj_type_string(target), cache_level));
|
|
return sum->num_objs;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* don't already know it - go get it */
|
|
df_search(topo, obj, target, cache_level, 0, rtype, &idx, &num_objs);
|
|
|
|
/* cache the results for later */
|
|
sum = OBJ_NEW(opal_hwloc_summary_t);
|
|
sum->type = target;
|
|
sum->cache_level = cache_level;
|
|
sum->num_objs = num_objs;
|
|
sum->rtype = rtype;
|
|
opal_list_append(&data->summaries, &sum->super);
|
|
|
|
OPAL_OUTPUT_VERBOSE((5, opal_hwloc_base_framework.framework_output,
|
|
"hwloc:base:get_nbojbs computed data %u of %s:%u",
|
|
num_objs, hwloc_obj_type_string(target), cache_level));
|
|
|
|
return num_objs;
|
|
}
|
|
|
|
static hwloc_obj_t df_search_min_bound(hwloc_topology_t topo,
|
|
hwloc_obj_t start,
|
|
hwloc_obj_type_t target,
|
|
unsigned cache_level,
|
|
unsigned int *min_bound)
|
|
{
|
|
unsigned k;
|
|
hwloc_obj_t obj, save=NULL;
|
|
opal_hwloc_obj_data_t *data;
|
|
|
|
if (target == start->type) {
|
|
if (HWLOC_OBJ_CACHE == start->type && cache_level != start->attr->cache.depth) {
|
|
goto notfound;
|
|
}
|
|
/* see how many procs are bound to us */
|
|
data = (opal_hwloc_obj_data_t*)start->userdata;
|
|
if (NULL == data) {
|
|
data = OBJ_NEW(opal_hwloc_obj_data_t);
|
|
start->userdata = data;
|
|
}
|
|
OPAL_OUTPUT_VERBOSE((5, opal_hwloc_base_framework.framework_output,
|
|
"hwloc:base:min_bound_under_obj object %s:%u nbound %u min %u",
|
|
hwloc_obj_type_string(target), start->logical_index,
|
|
data->num_bound, *min_bound));
|
|
if (data->num_bound < *min_bound) {
|
|
*min_bound = data->num_bound;
|
|
return start;
|
|
}
|
|
/* if we have more procs bound to us than the min, return NULL */
|
|
return NULL;
|
|
}
|
|
|
|
notfound:
|
|
for (k=0; k < start->arity; k++) {
|
|
obj = df_search_min_bound(topo, start->children[k], target, cache_level, min_bound);
|
|
if (NULL != obj) {
|
|
save = obj;
|
|
}
|
|
/* if the target level is HWTHREAD and we are NOT treating
|
|
* hwthreads as separate cpus, then we can only consider
|
|
* the 0th hwthread on a core
|
|
*/
|
|
if (HWLOC_OBJ_CORE == start->type && HWLOC_OBJ_PU == target &&
|
|
!opal_hwloc_use_hwthreads_as_cpus) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
return save;
|
|
}
|
|
|
|
hwloc_obj_t opal_hwloc_base_find_min_bound_target_under_obj(hwloc_topology_t topo,
|
|
hwloc_obj_t obj,
|
|
hwloc_obj_type_t target,
|
|
unsigned cache_level)
|
|
{
|
|
unsigned int min_bound;
|
|
hwloc_obj_t loc;
|
|
|
|
/* bozo check */
|
|
if (NULL == topo || NULL == obj) {
|
|
OPAL_OUTPUT_VERBOSE((5, opal_hwloc_base_framework.framework_output,
|
|
"hwloc:base:find_min_bound_under_obj NULL %s",
|
|
(NULL == topo) ? "topology" : "object"));
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/* if the object and target is the same type, then there is
|
|
* nothing under it, so just return itself
|
|
*/
|
|
if (target == obj->type) {
|
|
/* again, we have to treat caches differently as
|
|
* the levels distinguish them
|
|
*/
|
|
if (HWLOC_OBJ_CACHE == target &&
|
|
cache_level < obj->attr->cache.depth) {
|
|
goto moveon;
|
|
}
|
|
return obj;
|
|
}
|
|
|
|
moveon:
|
|
/* the hwloc accessors all report at the topo level,
|
|
* so we have to do some work
|
|
*/
|
|
min_bound = UINT_MAX;
|
|
|
|
loc = df_search_min_bound(topo, obj, target, cache_level, &min_bound);
|
|
|
|
if (NULL != loc) {
|
|
if (HWLOC_OBJ_CACHE == target) {
|
|
OPAL_OUTPUT_VERBOSE((5, opal_hwloc_base_framework.framework_output,
|
|
"hwloc:base:min_bound_under_obj found min bound of %u on %s:%u:%u",
|
|
min_bound, hwloc_obj_type_string(target),
|
|
cache_level, loc->logical_index));
|
|
} else {
|
|
OPAL_OUTPUT_VERBOSE((5, opal_hwloc_base_framework.framework_output,
|
|
"hwloc:base:min_bound_under_obj found min bound of %u on %s:%u",
|
|
min_bound, hwloc_obj_type_string(target), loc->logical_index));
|
|
}
|
|
}
|
|
|
|
return loc;
|
|
}
|
|
|
|
/* as above, only return the Nth instance of the specified object
|
|
* type from inside the topology
|
|
*/
|
|
hwloc_obj_t opal_hwloc_base_get_obj_by_type(hwloc_topology_t topo,
|
|
hwloc_obj_type_t target,
|
|
unsigned cache_level,
|
|
unsigned int instance,
|
|
opal_hwloc_resource_type_t rtype)
|
|
{
|
|
unsigned int idx;
|
|
hwloc_obj_t obj;
|
|
|
|
/* bozo check */
|
|
if (NULL == topo) {
|
|
return NULL;
|
|
}
|
|
|
|
/* if we want the nth LOGICAL object, we can just
|
|
* use the hwloc accessor to get it, unless it is a CACHE
|
|
* as these are treated as special cases
|
|
*/
|
|
if (OPAL_HWLOC_LOGICAL == rtype && HWLOC_OBJ_CACHE != target) {
|
|
return hwloc_get_obj_by_type(topo, target, instance);
|
|
}
|
|
|
|
/* for everything else, we have to do some work */
|
|
idx = 0;
|
|
obj = hwloc_get_root_obj(topo);
|
|
return df_search(topo, obj, target, cache_level, instance, rtype, &idx, NULL);
|
|
}
|
|
|
|
static void df_clear(hwloc_topology_t topo,
|
|
hwloc_obj_t start)
|
|
{
|
|
unsigned k;
|
|
opal_hwloc_obj_data_t *data;
|
|
|
|
/* see how many procs are bound to us */
|
|
data = (opal_hwloc_obj_data_t*)start->userdata;
|
|
if (NULL != data) {
|
|
data->num_bound = 0;
|
|
}
|
|
|
|
for (k=0; k < start->arity; k++) {
|
|
df_clear(topo, start->children[k]);
|
|
}
|
|
}
|
|
|
|
void opal_hwloc_base_clear_usage(hwloc_topology_t topo)
|
|
{
|
|
hwloc_obj_t root;
|
|
unsigned k;
|
|
|
|
/* bozo check */
|
|
if (NULL == topo) {
|
|
OPAL_OUTPUT_VERBOSE((5, opal_hwloc_base_framework.framework_output,
|
|
"hwloc:base:clear_usage: NULL topology"));
|
|
return;
|
|
}
|
|
|
|
root = hwloc_get_root_obj(topo);
|
|
/* must not start at root as the root object has
|
|
* a different userdata attached to it
|
|
*/
|
|
for (k=0; k < root->arity; k++) {
|
|
df_clear(topo, root->children[k]);
|
|
}
|
|
}
|
|
|
|
/* The current slot_list notation only goes to the core level - i.e., the location
|
|
* is specified as socket:core. Thus, the code below assumes that all locations
|
|
* are to be parsed under that notation.
|
|
*/
|
|
|
|
static int socket_to_cpu_set(char *cpus,
|
|
hwloc_topology_t topo,
|
|
hwloc_bitmap_t cpumask)
|
|
{
|
|
char **range;
|
|
int range_cnt;
|
|
int lower_range, upper_range;
|
|
int socket_id;
|
|
hwloc_obj_t obj;
|
|
hwloc_bitmap_t res;
|
|
|
|
if ('*' == cpus[0]) {
|
|
/* requesting cpumask for ALL sockets */
|
|
obj = hwloc_get_root_obj(topo);
|
|
/* set to all available logical processors - essentially,
|
|
* this specification equates to unbound
|
|
*/
|
|
res = opal_hwloc_base_get_available_cpus(topo, obj);
|
|
hwloc_bitmap_or(cpumask, cpumask, res);
|
|
return OPAL_SUCCESS;
|
|
}
|
|
|
|
range = opal_argv_split(cpus,'-');
|
|
range_cnt = opal_argv_count(range);
|
|
switch (range_cnt) {
|
|
case 1: /* no range was present, so just one socket given */
|
|
socket_id = atoi(range[0]);
|
|
obj = opal_hwloc_base_get_obj_by_type(topo, HWLOC_OBJ_SOCKET, 0, socket_id, OPAL_HWLOC_LOGICAL);
|
|
/* get the available logical cpus for this socket */
|
|
res = opal_hwloc_base_get_available_cpus(topo, obj);
|
|
hwloc_bitmap_or(cpumask, cpumask, res);
|
|
break;
|
|
|
|
case 2: /* range of sockets was given */
|
|
lower_range = atoi(range[0]);
|
|
upper_range = atoi(range[1]);
|
|
/* cycle across the range of sockets */
|
|
for (socket_id=lower_range; socket_id<=upper_range; socket_id++) {
|
|
obj = opal_hwloc_base_get_obj_by_type(topo, HWLOC_OBJ_SOCKET, 0, socket_id, OPAL_HWLOC_LOGICAL);
|
|
/* get the available logical cpus for this socket */
|
|
res = opal_hwloc_base_get_available_cpus(topo, obj);
|
|
/* set the corresponding bits in the bitmask */
|
|
hwloc_bitmap_or(cpumask, cpumask, res);
|
|
}
|
|
break;
|
|
default:
|
|
opal_argv_free(range);
|
|
return OPAL_ERROR;
|
|
}
|
|
opal_argv_free(range);
|
|
|
|
return OPAL_SUCCESS;
|
|
}
|
|
|
|
static int socket_core_to_cpu_set(char *socket_core_list,
|
|
hwloc_topology_t topo,
|
|
hwloc_bitmap_t cpumask)
|
|
{
|
|
int rc=OPAL_SUCCESS, i;
|
|
char **socket_core, *corestr;
|
|
char **range;
|
|
int range_cnt;
|
|
int lower_range, upper_range;
|
|
int socket_id, core_id;
|
|
hwloc_obj_t socket, core;
|
|
hwloc_cpuset_t res;
|
|
unsigned int idx;
|
|
hwloc_obj_type_t obj_type = HWLOC_OBJ_CORE;
|
|
|
|
socket_core = opal_argv_split(socket_core_list, ':');
|
|
socket_id = atoi(socket_core[0]);
|
|
|
|
/* get the object for this socket id */
|
|
if (NULL == (socket = opal_hwloc_base_get_obj_by_type(topo, HWLOC_OBJ_SOCKET, 0,
|
|
socket_id, OPAL_HWLOC_LOGICAL))) {
|
|
opal_argv_free(socket_core);
|
|
return OPAL_ERR_NOT_FOUND;
|
|
}
|
|
|
|
/* as described in comment near top of file, hwloc isn't able
|
|
* to find cores on all platforms. Adjust the type here if
|
|
* required
|
|
*/
|
|
if (NULL == hwloc_get_obj_by_type(topo, HWLOC_OBJ_CORE, 0)) {
|
|
obj_type = HWLOC_OBJ_PU;
|
|
}
|
|
|
|
for (i=1; NULL != socket_core[i]; i++) {
|
|
if ('C' == socket_core[i][0] ||
|
|
'c' == socket_core[i][0]) {
|
|
corestr = &socket_core[i][1];
|
|
} else {
|
|
corestr = socket_core[i];
|
|
}
|
|
if ('*' == corestr[0]) {
|
|
/* set to all available logical cpus on this socket */
|
|
res = opal_hwloc_base_get_available_cpus(topo, socket);
|
|
hwloc_bitmap_or(cpumask, cpumask, res);
|
|
/* we are done - already assigned all cores! */
|
|
rc = OPAL_SUCCESS;
|
|
break;
|
|
} else {
|
|
range = opal_argv_split(corestr, '-');
|
|
range_cnt = opal_argv_count(range);
|
|
/* see if a range was set or not */
|
|
switch (range_cnt) {
|
|
case 1: /* only one core specified */
|
|
core_id = atoi(range[0]);
|
|
/* get that object */
|
|
idx = 0;
|
|
if (NULL == (core = df_search(topo, socket, obj_type, 0,
|
|
core_id, OPAL_HWLOC_AVAILABLE,
|
|
&idx, NULL))) {
|
|
return OPAL_ERR_NOT_FOUND;
|
|
}
|
|
/* get the cpus */
|
|
res = opal_hwloc_base_get_available_cpus(topo, core);
|
|
hwloc_bitmap_or(cpumask, cpumask, res);
|
|
break;
|
|
|
|
case 2: /* range of core id's was given */
|
|
opal_output_verbose(5, opal_hwloc_base_framework.framework_output,
|
|
"range of cores given: start %s stop %s",
|
|
range[0], range[1]);
|
|
lower_range = atoi(range[0]);
|
|
upper_range = atoi(range[1]);
|
|
for (core_id=lower_range; core_id <= upper_range; core_id++) {
|
|
/* get that object */
|
|
idx = 0;
|
|
if (NULL == (core = df_search(topo, socket, obj_type, 0,
|
|
core_id, OPAL_HWLOC_AVAILABLE,
|
|
&idx, NULL))) {
|
|
return OPAL_ERR_NOT_FOUND;
|
|
}
|
|
/* get the cpus */
|
|
res = opal_hwloc_base_get_available_cpus(topo, core);
|
|
/* add them into the result */
|
|
hwloc_bitmap_or(cpumask, cpumask, res);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
opal_argv_free(range);
|
|
opal_argv_free(socket_core);
|
|
return OPAL_ERROR;
|
|
}
|
|
opal_argv_free(range);
|
|
}
|
|
}
|
|
opal_argv_free(socket_core);
|
|
|
|
return rc;
|
|
}
|
|
|
|
int opal_hwloc_base_slot_list_parse(const char *slot_str,
|
|
hwloc_topology_t topo,
|
|
hwloc_cpuset_t cpumask)
|
|
{
|
|
char **item;
|
|
int rc, i;
|
|
hwloc_obj_t pu;
|
|
hwloc_cpuset_t pucpus;
|
|
char **range;
|
|
size_t range_cnt;
|
|
int core_id, lower_range, upper_range;
|
|
|
|
/* bozo checks */
|
|
if (NULL == opal_hwloc_topology) {
|
|
return OPAL_ERR_NOT_SUPPORTED;
|
|
}
|
|
if (NULL == slot_str || 0 == strlen(slot_str)) {
|
|
return OPAL_ERR_BAD_PARAM;
|
|
}
|
|
|
|
opal_output_verbose(5, opal_hwloc_base_framework.framework_output,
|
|
"slot assignment: slot_list == %s",
|
|
slot_str);
|
|
|
|
/* split at ';' */
|
|
item = opal_argv_split(slot_str, ';');
|
|
|
|
/* start with a clean mask */
|
|
hwloc_bitmap_zero(cpumask);
|
|
/* loop across the items and accumulate the mask */
|
|
for (i=0; NULL != item[i]; i++) {
|
|
opal_output_verbose(5, opal_hwloc_base_framework.framework_output,
|
|
"working assignment %s",
|
|
item[i]);
|
|
/* if they specified "socket" by starting with an S/s,
|
|
* or if they use socket:core notation, then parse the
|
|
* socket/core info
|
|
*/
|
|
if ('S' == item[i][0] ||
|
|
's' == item[i][0] ||
|
|
NULL != strchr(item[i], ':')) {
|
|
/* specified a socket */
|
|
if (NULL == strchr(item[i], ':')) {
|
|
/* binding just to the socket level, though
|
|
* it could specify multiple sockets
|
|
*/
|
|
if (OPAL_SUCCESS != (rc = socket_to_cpu_set(&item[i][1], /* skip the 'S' */
|
|
topo, cpumask))) {
|
|
opal_argv_free(item);
|
|
return rc;
|
|
}
|
|
} else {
|
|
/* binding to a socket/whatever specification */
|
|
if ('S' == item[i][0] ||
|
|
's' == item[i][0]) {
|
|
if (OPAL_SUCCESS != (rc = socket_core_to_cpu_set(&item[i][1], /* skip the 'S' */
|
|
topo, cpumask))) {
|
|
opal_argv_free(item);
|
|
return rc;
|
|
}
|
|
} else {
|
|
if (OPAL_SUCCESS != (rc = socket_core_to_cpu_set(item[i],
|
|
topo, cpumask))) {
|
|
opal_argv_free(item);
|
|
return rc;
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
/* just a core specification - see if one or a range was given */
|
|
range = opal_argv_split(item[i], '-');
|
|
range_cnt = opal_argv_count(range);
|
|
/* see if a range was set or not */
|
|
switch (range_cnt) {
|
|
case 1: /* only one core specified */
|
|
core_id = atoi(range[0]);
|
|
/* find the specified logical available cpu */
|
|
if (NULL == (pu = get_pu(topo, core_id))) {
|
|
opal_argv_free(range);
|
|
opal_argv_free(item);
|
|
return OPAL_ERROR;
|
|
}
|
|
/* get the available cpus for that object */
|
|
pucpus = opal_hwloc_base_get_available_cpus(topo, pu);
|
|
/* set that in the mask */
|
|
hwloc_bitmap_or(cpumask, cpumask, pucpus);
|
|
break;
|
|
|
|
case 2: /* range of core id's was given */
|
|
lower_range = atoi(range[0]);
|
|
upper_range = atoi(range[1]);
|
|
for (core_id=lower_range; core_id <= upper_range; core_id++) {
|
|
/* find the specified logical available cpu */
|
|
if (NULL == (pu = get_pu(topo, core_id))) {
|
|
opal_argv_free(range);
|
|
opal_argv_free(item);
|
|
return OPAL_ERROR;
|
|
}
|
|
/* get the available cpus for that object */
|
|
pucpus = opal_hwloc_base_get_available_cpus(topo, pu);
|
|
/* set that in the mask */
|
|
hwloc_bitmap_or(cpumask, cpumask, pucpus);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
opal_argv_free(range);
|
|
opal_argv_free(item);
|
|
return OPAL_ERROR;
|
|
}
|
|
}
|
|
}
|
|
opal_argv_free(item);
|
|
return OPAL_SUCCESS;
|
|
}
|
|
|
|
opal_hwloc_locality_t opal_hwloc_base_get_relative_locality(hwloc_topology_t topo,
|
|
char *cpuset1, char *cpuset2)
|
|
{
|
|
opal_hwloc_locality_t locality;
|
|
hwloc_obj_t obj;
|
|
unsigned depth, d, width, w;
|
|
hwloc_cpuset_t avail;
|
|
bool shared;
|
|
hwloc_obj_type_t type;
|
|
int sect1, sect2;
|
|
hwloc_cpuset_t loc1, loc2;
|
|
|
|
/* start with what we know - they share a node on a cluster
|
|
* NOTE: we may alter that latter part as hwloc's ability to
|
|
* sense multi-cu, multi-cluster systems grows
|
|
*/
|
|
locality = OPAL_PROC_ON_CLUSTER | OPAL_PROC_ON_CU | OPAL_PROC_ON_NODE | OPAL_PROC_ON_BOARD;
|
|
|
|
/* if either cpuset is NULL, then that isn't bound */
|
|
if (NULL == cpuset1 || NULL == cpuset2) {
|
|
return locality;
|
|
}
|
|
|
|
/* get the max depth of the topology */
|
|
depth = hwloc_topology_get_depth(topo);
|
|
|
|
/* convert the strings to cpusets */
|
|
loc1 = hwloc_bitmap_alloc();
|
|
hwloc_bitmap_list_sscanf(loc1, cpuset1);
|
|
loc2 = hwloc_bitmap_alloc();
|
|
hwloc_bitmap_list_sscanf(loc2, cpuset2);
|
|
|
|
/* start at the first depth below the top machine level */
|
|
for (d=1; d < depth; d++) {
|
|
shared = false;
|
|
/* get the object type at this depth */
|
|
type = hwloc_get_depth_type(topo, d);
|
|
/* if it isn't one of interest, then ignore it */
|
|
if (HWLOC_OBJ_NODE != type &&
|
|
HWLOC_OBJ_SOCKET != type &&
|
|
HWLOC_OBJ_CACHE != type &&
|
|
HWLOC_OBJ_CORE != type &&
|
|
HWLOC_OBJ_PU != type) {
|
|
continue;
|
|
}
|
|
/* get the width of the topology at this depth */
|
|
width = hwloc_get_nbobjs_by_depth(topo, d);
|
|
|
|
/* scan all objects at this depth to see if
|
|
* our locations overlap with them
|
|
*/
|
|
for (w=0; w < width; w++) {
|
|
/* get the object at this depth/index */
|
|
obj = hwloc_get_obj_by_depth(topo, d, w);
|
|
/* get the available cpuset for this obj */
|
|
avail = opal_hwloc_base_get_available_cpus(topo, obj);
|
|
/* see if our locations intersect with it */
|
|
sect1 = hwloc_bitmap_intersects(avail, loc1);
|
|
sect2 = hwloc_bitmap_intersects(avail, loc2);
|
|
/* if both intersect, then we share this level */
|
|
if (sect1 && sect2) {
|
|
shared = true;
|
|
switch(obj->type) {
|
|
case HWLOC_OBJ_NODE:
|
|
locality |= OPAL_PROC_ON_NUMA;
|
|
break;
|
|
case HWLOC_OBJ_SOCKET:
|
|
locality |= OPAL_PROC_ON_SOCKET;
|
|
break;
|
|
case HWLOC_OBJ_CACHE:
|
|
if (3 == obj->attr->cache.depth) {
|
|
locality |= OPAL_PROC_ON_L3CACHE;
|
|
} else if (2 == obj->attr->cache.depth) {
|
|
locality |= OPAL_PROC_ON_L2CACHE;
|
|
} else {
|
|
locality |= OPAL_PROC_ON_L1CACHE;
|
|
}
|
|
break;
|
|
case HWLOC_OBJ_CORE:
|
|
locality |= OPAL_PROC_ON_CORE;
|
|
break;
|
|
case HWLOC_OBJ_PU:
|
|
locality |= OPAL_PROC_ON_HWTHREAD;
|
|
break;
|
|
default:
|
|
/* just ignore it */
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
/* otherwise, we don't share this
|
|
* object - but we still might share another object
|
|
* on this level, so we have to keep searching
|
|
*/
|
|
}
|
|
/* if we spanned the entire width without finding
|
|
* a point of intersection, then no need to go
|
|
* deeper
|
|
*/
|
|
if (!shared) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
opal_output_verbose(5, opal_hwloc_base_framework.framework_output,
|
|
"locality: %s",
|
|
opal_hwloc_base_print_locality(locality));
|
|
|
|
return locality;
|
|
}
|
|
|
|
char* opal_hwloc_base_print_binding(opal_binding_policy_t binding)
|
|
{
|
|
char *ret, *bind;
|
|
opal_hwloc_print_buffers_t *ptr;
|
|
|
|
switch(OPAL_GET_BINDING_POLICY(binding)) {
|
|
case OPAL_BIND_TO_NONE:
|
|
bind = "NONE";
|
|
break;
|
|
case OPAL_BIND_TO_BOARD:
|
|
bind = "BOARD";
|
|
break;
|
|
case OPAL_BIND_TO_NUMA:
|
|
bind = "NUMA";
|
|
break;
|
|
case OPAL_BIND_TO_SOCKET:
|
|
bind = "SOCKET";
|
|
break;
|
|
case OPAL_BIND_TO_L3CACHE:
|
|
bind = "L3CACHE";
|
|
break;
|
|
case OPAL_BIND_TO_L2CACHE:
|
|
bind = "L2CACHE";
|
|
break;
|
|
case OPAL_BIND_TO_L1CACHE:
|
|
bind = "L1CACHE";
|
|
break;
|
|
case OPAL_BIND_TO_CORE:
|
|
bind = "CORE";
|
|
break;
|
|
case OPAL_BIND_TO_HWTHREAD:
|
|
bind = "HWTHREAD";
|
|
break;
|
|
case OPAL_BIND_TO_CPUSET:
|
|
bind = "CPUSET";
|
|
break;
|
|
default:
|
|
bind = "UNKNOWN";
|
|
}
|
|
ptr = opal_hwloc_get_print_buffer();
|
|
if (NULL == ptr) {
|
|
return opal_hwloc_print_null;
|
|
}
|
|
/* cycle around the ring */
|
|
if (OPAL_HWLOC_PRINT_NUM_BUFS == ptr->cntr) {
|
|
ptr->cntr = 0;
|
|
}
|
|
if (!OPAL_BINDING_REQUIRED(binding) &&
|
|
OPAL_BIND_OVERLOAD_ALLOWED(binding)) {
|
|
snprintf(ptr->buffers[ptr->cntr], OPAL_HWLOC_PRINT_MAX_SIZE,
|
|
"%s:IF-SUPPORTED:OVERLOAD-ALLOWED", bind);
|
|
} else if (OPAL_BIND_OVERLOAD_ALLOWED(binding)) {
|
|
snprintf(ptr->buffers[ptr->cntr], OPAL_HWLOC_PRINT_MAX_SIZE,
|
|
"%s:OVERLOAD-ALLOWED", bind);
|
|
} else if (!OPAL_BINDING_REQUIRED(binding)) {
|
|
snprintf(ptr->buffers[ptr->cntr], OPAL_HWLOC_PRINT_MAX_SIZE,
|
|
"%s:IF-SUPPORTED", bind);
|
|
} else {
|
|
snprintf(ptr->buffers[ptr->cntr], OPAL_HWLOC_PRINT_MAX_SIZE, "%s", bind);
|
|
}
|
|
ret = ptr->buffers[ptr->cntr];
|
|
ptr->cntr++;
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Turn an int bitmap to a "a-b,c" range kind of string
|
|
*/
|
|
static char *bitmap2rangestr(int bitmap)
|
|
{
|
|
size_t i;
|
|
int range_start, range_end;
|
|
bool first, isset;
|
|
char tmp[BUFSIZ];
|
|
const int stmp = sizeof(tmp) - 1;
|
|
static char ret[BUFSIZ];
|
|
|
|
memset(ret, 0, sizeof(ret));
|
|
|
|
first = true;
|
|
range_start = -999;
|
|
for (i = 0; i < sizeof(int) * 8; ++i) {
|
|
isset = (bitmap & (1 << i));
|
|
|
|
/* Do we have a running range? */
|
|
if (range_start >= 0) {
|
|
if (isset) {
|
|
continue;
|
|
} else {
|
|
/* A range just ended; output it */
|
|
if (!first) {
|
|
strncat(ret, ",", sizeof(ret) - strlen(ret));
|
|
first = false;
|
|
}
|
|
|
|
range_end = i - 1;
|
|
if (range_start == range_end) {
|
|
snprintf(tmp, stmp, "%d", range_start);
|
|
} else {
|
|
snprintf(tmp, stmp, "%d-%d", range_start, range_end);
|
|
}
|
|
strncat(ret, tmp, sizeof(ret) - strlen(ret));
|
|
|
|
range_start = -999;
|
|
}
|
|
}
|
|
|
|
/* No running range */
|
|
else {
|
|
if (isset) {
|
|
range_start = i;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* If we ended the bitmap with a range open, output it */
|
|
if (range_start >= 0) {
|
|
if (!first) {
|
|
strncat(ret, ",", sizeof(ret) - strlen(ret));
|
|
first = false;
|
|
}
|
|
|
|
range_end = i - 1;
|
|
if (range_start == range_end) {
|
|
snprintf(tmp, stmp, "%d", range_start);
|
|
} else {
|
|
snprintf(tmp, stmp, "%d-%d", range_start, range_end);
|
|
}
|
|
strncat(ret, tmp, sizeof(ret) - strlen(ret));
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Make a map of socket/core/hwthread tuples
|
|
*/
|
|
static int build_map(int *num_sockets_arg, int *num_cores_arg,
|
|
hwloc_cpuset_t cpuset, int ***map)
|
|
{
|
|
static int num_sockets = -1, num_cores = -1;
|
|
int socket_index, core_index, pu_index;
|
|
hwloc_obj_t socket, core, pu;
|
|
int **data;
|
|
|
|
/* Find out how many sockets we have (cached so that we don't have
|
|
to look this up every time) */
|
|
if (num_sockets < 0) {
|
|
num_sockets = hwloc_get_nbobjs_by_type(opal_hwloc_topology, HWLOC_OBJ_SOCKET);
|
|
/* some systems (like the iMac) only have one
|
|
* socket and so don't report a socket
|
|
*/
|
|
if (0 == num_sockets) {
|
|
num_sockets = 1;
|
|
}
|
|
/* Lazy: take the total number of cores that we have in the
|
|
topology; that'll be more than the max number of cores
|
|
under any given socket */
|
|
num_cores = hwloc_get_nbobjs_by_type(opal_hwloc_topology, HWLOC_OBJ_CORE);
|
|
}
|
|
*num_sockets_arg = num_sockets;
|
|
*num_cores_arg = num_cores;
|
|
|
|
/* Alloc a 2D array: sockets x cores. */
|
|
data = malloc(num_sockets * sizeof(int *));
|
|
if (NULL == data) {
|
|
return OPAL_ERR_OUT_OF_RESOURCE;
|
|
}
|
|
data[0] = calloc(num_sockets * num_cores, sizeof(int));
|
|
if (NULL == data[0]) {
|
|
free(data);
|
|
return OPAL_ERR_OUT_OF_RESOURCE;
|
|
}
|
|
for (socket_index = 1; socket_index < num_sockets; ++socket_index) {
|
|
data[socket_index] = data[socket_index - 1] + num_cores;
|
|
}
|
|
|
|
/* Iterate the PUs in this cpuset; fill in the data[][] array with
|
|
the socket/core/pu triples */
|
|
for (pu_index = 0,
|
|
pu = hwloc_get_obj_inside_cpuset_by_type(opal_hwloc_topology,
|
|
cpuset, HWLOC_OBJ_PU,
|
|
pu_index);
|
|
NULL != pu;
|
|
pu = hwloc_get_obj_inside_cpuset_by_type(opal_hwloc_topology,
|
|
cpuset, HWLOC_OBJ_PU,
|
|
++pu_index)) {
|
|
/* Go upward and find the core this PU belongs to */
|
|
core = pu;
|
|
while (NULL != core && core->type != HWLOC_OBJ_CORE) {
|
|
core = core->parent;
|
|
}
|
|
core_index = 0;
|
|
if (NULL != core) {
|
|
core_index = core->logical_index;
|
|
}
|
|
|
|
/* Go upward and find the socket this PU belongs to */
|
|
socket = pu;
|
|
while (NULL != socket && socket->type != HWLOC_OBJ_SOCKET) {
|
|
socket = socket->parent;
|
|
}
|
|
socket_index = 0;
|
|
if (NULL != socket) {
|
|
socket_index = socket->logical_index;
|
|
}
|
|
|
|
/* Save this socket/core/pu combo. LAZY: Assuming that we
|
|
won't have more PU's per core than (sizeof(int)*8). */
|
|
data[socket_index][core_index] |= (1 << pu->sibling_rank);
|
|
}
|
|
|
|
*map = data;
|
|
return OPAL_SUCCESS;
|
|
}
|
|
|
|
/*
|
|
* Make a prettyprint string for a hwloc_cpuset_t
|
|
*/
|
|
int opal_hwloc_base_cset2str(char *str, int len, hwloc_cpuset_t cpuset)
|
|
{
|
|
bool first;
|
|
int num_sockets, num_cores;
|
|
int ret, socket_index, core_index;
|
|
char tmp[BUFSIZ];
|
|
const int stmp = sizeof(tmp) - 1;
|
|
int **map;
|
|
|
|
str[0] = tmp[stmp] = '\0';
|
|
|
|
if (OPAL_SUCCESS != (ret = build_map(&num_sockets, &num_cores, cpuset, &map))) {
|
|
return ret;
|
|
}
|
|
|
|
/* Iterate over the data matrix and build up the string */
|
|
first = true;
|
|
for (socket_index = 0; socket_index < num_sockets; ++socket_index) {
|
|
for (core_index = 0; core_index < num_cores; ++core_index) {
|
|
if (map[socket_index][core_index] > 0) {
|
|
if (!first) {
|
|
strncat(str, ", ", len - strlen(str));
|
|
}
|
|
first = false;
|
|
|
|
snprintf(tmp, stmp, "socket %d[core %d[hwt %s]]",
|
|
socket_index, core_index,
|
|
bitmap2rangestr(map[socket_index][core_index]));
|
|
strncat(str, tmp, len - strlen(str));
|
|
}
|
|
}
|
|
}
|
|
free(map[0]);
|
|
free(map);
|
|
|
|
return OPAL_SUCCESS;
|
|
}
|
|
|
|
/*
|
|
* Make a prettyprint string for a cset in a map format.
|
|
* Example: [B./..]
|
|
* Key: [] - signifies socket
|
|
* / - divider between cores
|
|
* . - signifies PU a process not bound to
|
|
* B - signifies PU a process is bound to
|
|
*/
|
|
int opal_hwloc_base_cset2mapstr(char *str, int len, hwloc_cpuset_t cpuset)
|
|
{
|
|
char tmp[BUFSIZ];
|
|
int core_index, pu_index;
|
|
const int stmp = sizeof(tmp) - 1;
|
|
hwloc_obj_t socket, core, pu;
|
|
|
|
str[0] = tmp[stmp] = '\0';
|
|
|
|
/* Iterate over all existing sockets */
|
|
for (socket = hwloc_get_obj_by_type(opal_hwloc_topology,
|
|
HWLOC_OBJ_SOCKET, 0);
|
|
NULL != socket;
|
|
socket = socket->next_cousin) {
|
|
strncat(str, "[", len - strlen(str));
|
|
|
|
/* Iterate over all existing cores in this socket */
|
|
core_index = 0;
|
|
for (core = hwloc_get_obj_inside_cpuset_by_type(opal_hwloc_topology,
|
|
socket->cpuset,
|
|
HWLOC_OBJ_CORE, core_index);
|
|
NULL != core;
|
|
core = hwloc_get_obj_inside_cpuset_by_type(opal_hwloc_topology,
|
|
socket->cpuset,
|
|
HWLOC_OBJ_CORE, ++core_index)) {
|
|
if (core_index > 0) {
|
|
strncat(str, "/", len - strlen(str));
|
|
}
|
|
|
|
/* Iterate over all existing PUs in this core */
|
|
pu_index = 0;
|
|
for (pu = hwloc_get_obj_inside_cpuset_by_type(opal_hwloc_topology,
|
|
core->cpuset,
|
|
HWLOC_OBJ_PU, pu_index);
|
|
NULL != pu;
|
|
pu = hwloc_get_obj_inside_cpuset_by_type(opal_hwloc_topology,
|
|
core->cpuset,
|
|
HWLOC_OBJ_PU, ++pu_index)) {
|
|
|
|
/* Is this PU in the cpuset? */
|
|
if (hwloc_bitmap_isset(cpuset, pu->os_index)) {
|
|
strncat(str, "B", len - strlen(str));
|
|
} else {
|
|
strncat(str, ".", len - strlen(str));
|
|
}
|
|
}
|
|
}
|
|
strncat(str, "]", len - strlen(str));
|
|
}
|
|
|
|
return OPAL_SUCCESS;
|
|
}
|
|
|
|
static int dist_cmp_fn (opal_list_item_t **a, opal_list_item_t **b)
|
|
{
|
|
orte_rmaps_numa_node_t *aitem = *((orte_rmaps_numa_node_t **) a);
|
|
orte_rmaps_numa_node_t *bitem = *((orte_rmaps_numa_node_t **) b);
|
|
|
|
if (bitem->dist_from_closed > aitem->dist_from_closed) {
|
|
return 1;
|
|
} else if( aitem->dist_from_closed == bitem->dist_from_closed ) {
|
|
return 0;
|
|
} else {
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
static void sort_by_dist(hwloc_topology_t topo, char* device_name, opal_list_t *sorted_list)
|
|
{
|
|
hwloc_obj_t device_obj = NULL;
|
|
hwloc_obj_t obj = NULL, root = NULL;
|
|
const struct hwloc_distances_s* distances;
|
|
orte_rmaps_numa_node_t *numa_node;
|
|
int close_node_index;
|
|
float latency;
|
|
unsigned int j;
|
|
unsigned int depth;
|
|
unsigned i;
|
|
|
|
for (device_obj = hwloc_get_obj_by_type(topo, HWLOC_OBJ_OS_DEVICE, 0); device_obj; device_obj = hwloc_get_next_osdev(topo, device_obj)) {
|
|
if (device_obj->attr->osdev.type == HWLOC_OBJ_OSDEV_OPENFABRICS
|
|
|| device_obj->attr->osdev.type == HWLOC_OBJ_OSDEV_NETWORK) {
|
|
if (!strcmp(device_obj->name, device_name)) {
|
|
/* find numa node containing this device */
|
|
obj = device_obj->parent;
|
|
while ((obj != NULL) && (obj->type != HWLOC_OBJ_NODE)) {
|
|
obj = obj->parent;
|
|
}
|
|
if (obj == NULL) {
|
|
opal_output_verbose(5, opal_hwloc_base_framework.framework_output,
|
|
"hwloc:base:get_sorted_numa_list: NUMA node closest to %s wasn't found.",
|
|
device_name);
|
|
return;
|
|
} else {
|
|
close_node_index = obj->logical_index;
|
|
}
|
|
|
|
/* find distance matrix for all numa nodes */
|
|
distances = hwloc_get_whole_distance_matrix_by_type(topo, HWLOC_OBJ_NODE);
|
|
if (NULL == distances) {
|
|
/* we can try to find distances under group object. This info can be there. */
|
|
depth = hwloc_get_type_depth(topo, HWLOC_OBJ_NODE);
|
|
if (depth < 0) {
|
|
opal_output_verbose(5, opal_hwloc_base_framework.framework_output,
|
|
"hwloc:base:get_sorted_numa_list: There is no information about distances on the node.");
|
|
return;
|
|
}
|
|
root = hwloc_get_root_obj(topo);
|
|
for (i = 0; i < root->arity; i++) {
|
|
obj = root->children[i];
|
|
if (obj->distances_count > 0) {
|
|
for(j = 0; j < obj->distances_count; j++) {
|
|
if (obj->distances[j]->relative_depth + 1 == depth) {
|
|
distances = obj->distances[j];
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
/* find all distances for our close node with logical index = close_node_index as close_node_index + nbobjs*j */
|
|
if ((NULL == distances) || (0 == distances->nbobjs)) {
|
|
opal_output_verbose(5, opal_hwloc_base_framework.framework_output,
|
|
"hwloc:base:get_sorted_numa_list: There is no information about distances on the node.");
|
|
return;
|
|
}
|
|
/* fill list of numa nodes */
|
|
for (j = 0; j < distances->nbobjs; j++) {
|
|
latency = distances->latency[close_node_index + distances->nbobjs * j];
|
|
numa_node = OBJ_NEW(orte_rmaps_numa_node_t);
|
|
numa_node->index = j;
|
|
numa_node->dist_from_closed = latency;
|
|
opal_list_append(sorted_list, &numa_node->super);
|
|
}
|
|
/* sort numa nodes by distance from the closest one to PCI */
|
|
opal_list_sort(sorted_list, dist_cmp_fn);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static int find_devices(hwloc_topology_t topo, char* device_name)
|
|
{
|
|
hwloc_obj_t device_obj = NULL;
|
|
int count = 0;
|
|
for (device_obj = hwloc_get_obj_by_type(topo, HWLOC_OBJ_OS_DEVICE, 0); device_obj; device_obj = hwloc_get_next_osdev(topo, device_obj)) {
|
|
if (device_obj->attr->osdev.type == HWLOC_OBJ_OSDEV_OPENFABRICS) {
|
|
count++;
|
|
free(device_name);
|
|
device_name = strdup(device_obj->name);
|
|
}
|
|
}
|
|
return count;
|
|
}
|
|
|
|
int opal_hwloc_get_sorted_numa_list(hwloc_topology_t topo, char* device_name, opal_list_t *sorted_list)
|
|
{
|
|
hwloc_obj_t obj;
|
|
opal_list_item_t *item;
|
|
opal_hwloc_summary_t *sum;
|
|
opal_hwloc_topo_data_t *data;
|
|
orte_rmaps_numa_node_t *numa, *copy_numa;
|
|
int count;
|
|
|
|
obj = hwloc_get_root_obj(topo);
|
|
|
|
/* first see if the topology already has this info */
|
|
/* we call opal_hwloc_base_get_nbobjs_by_type() before it to fill summary object so it should exist*/
|
|
data = (opal_hwloc_topo_data_t*)obj->userdata;
|
|
if (NULL != data) {
|
|
for (item = opal_list_get_first(&data->summaries);
|
|
item != opal_list_get_end(&data->summaries);
|
|
item = opal_list_get_next(item)) {
|
|
sum = (opal_hwloc_summary_t*)item;
|
|
if (HWLOC_OBJ_NODE == sum->type) {
|
|
if (opal_list_get_size(&sum->sorted_by_dist_list) > 0) {
|
|
OPAL_LIST_FOREACH(numa, &(sum->sorted_by_dist_list), orte_rmaps_numa_node_t) {
|
|
copy_numa = OBJ_NEW(orte_rmaps_numa_node_t);
|
|
copy_numa->index = numa->index;
|
|
copy_numa->dist_from_closed = numa->dist_from_closed;
|
|
opal_list_append(sorted_list, ©_numa->super);
|
|
}
|
|
return OPAL_SUCCESS;
|
|
}else {
|
|
/* don't already know it - go get it */
|
|
/* firstly we check if we need to autodetect OpenFabrics devices or we have the specified one */
|
|
if (!strcmp(device_name, "auto")) {
|
|
count = find_devices(topo, device_name);
|
|
if (count > 1) {
|
|
return count;
|
|
}
|
|
}
|
|
if (!device_name || (strlen(device_name) == 0)) {
|
|
return OPAL_ERR_NOT_FOUND;
|
|
}
|
|
sort_by_dist(topo, device_name, sorted_list);
|
|
/* store this info in summary object for later usage */
|
|
OPAL_LIST_FOREACH(numa, sorted_list, orte_rmaps_numa_node_t) {
|
|
copy_numa = OBJ_NEW(orte_rmaps_numa_node_t);
|
|
copy_numa->index = numa->index;
|
|
copy_numa->dist_from_closed = numa->dist_from_closed;
|
|
opal_list_append(&(sum->sorted_by_dist_list), ©_numa->super);
|
|
}
|
|
return OPAL_SUCCESS;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return OPAL_ERR_NOT_FOUND;
|
|
}
|