90a8fe4aad
(with libnuma-2.0.4 / LIBNUMA_API_VERSION 2): numa_get_run_node_mask returns a struct bitmask *. Whether it's a good idea to blindly pass that on to numa_set_membind() is another matter: one might want to match against the list returned by numa_get_mems_allowed(), which may be set by the outside environment. Refs trac:2698. This commit was SVN r24442. The following SVN revision numbers were found above: r24421 --> open-mpi/ompi@31510e683b The following Trac tickets were found above: Ticket 2698 --> https://svn.open-mpi.org/trac/ompi/ticket/2698
139 строки
3.7 KiB
C
139 строки
3.7 KiB
C
/*
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* Copyright (c) 2004-2008 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) 2004-2005 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) 2008-2011 Cisco Systems, Inc. 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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#include <string.h>
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#include <numa.h>
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#include <numaif.h>
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#include "opal/constants.h"
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#include "opal/mca/maffinity/maffinity.h"
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#include "opal/mca/maffinity/base/base.h"
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#include "maffinity_libnuma.h"
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/*
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* Local functions
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*/
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static int libnuma_module_init(void);
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static int libnuma_module_set(opal_maffinity_base_segment_t *segments,
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size_t num_segments);
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static int libnuma_module_node_name_to_id(char *, int *);
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static int libnuma_modules_bind(opal_maffinity_base_segment_t *, size_t, int);
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/*
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* Libnuma maffinity module
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*/
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static const opal_maffinity_base_module_1_0_0_t loc_module = {
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/* Initialization function */
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libnuma_module_init,
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/* Module function pointers */
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libnuma_module_set,
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libnuma_module_node_name_to_id,
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libnuma_modules_bind
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};
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int opal_maffinity_libnuma_component_query(mca_base_module_t **module, int *priority)
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{
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int param;
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if (-1 == numa_available()) {
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return OPAL_ERROR;
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}
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param = mca_base_param_find("maffinity", "libnuma", "priority");
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mca_base_param_lookup_int(param, priority);
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*module = (mca_base_module_t *)&loc_module;
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return OPAL_SUCCESS;
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}
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static int libnuma_module_init(void)
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{
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struct bitmask * mask;
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/* If we have a strict policy set, then bind all memory to this
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numa node. Note that maffinity won't be invoked unless the
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process is already bound to a specific processor, so we're
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guaranteed to get a good value back from
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numa_get_run_node_mask(). */
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if (MPOL_BIND == mca_maffinity_libnuma_component.libnuma_policy) {
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mask = numa_get_run_node_mask();
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numa_set_membind(mask);
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}
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/* We want libnuma to fail to alloc if it can't allocate on the
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specified node */
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numa_set_strict(1);
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return OPAL_SUCCESS;
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}
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static int libnuma_module_set(opal_maffinity_base_segment_t *segments,
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size_t num_segments)
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{
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size_t i;
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/* Explicitly set the memory binding policy for a set of
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segments */
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for (i = 0; i < num_segments; ++i) {
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numa_setlocal_memory(segments[i].mbs_start_addr,
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segments[i].mbs_len);
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}
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return OPAL_SUCCESS;
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}
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static int libnuma_module_node_name_to_id(char *node_name, int *id)
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{
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/* GLB: fix me */
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*id = atoi(node_name + 3);
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return OPAL_SUCCESS;
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}
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static int libnuma_modules_bind(opal_maffinity_base_segment_t *segs,
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size_t count, int node_id)
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{
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size_t i;
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int rc;
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unsigned long node_mask = (1 << node_id);
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for(i = 0; i < count; i++) {
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rc = mbind(segs[i].mbs_start_addr, segs[i].mbs_len,
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mca_maffinity_libnuma_component.libnuma_policy,
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&node_mask, sizeof(node_mask) * 8,
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#ifdef HAVE_MPOL_MF_MOVE
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MPOL_MF_MOVE
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#else
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MPOL_MF_STRICT
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#endif
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);
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if (0 != rc) {
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return OPAL_ERROR;
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}
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}
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return OPAL_SUCCESS;
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}
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