150 строки
4.9 KiB
C
150 строки
4.9 KiB
C
/*
|
|
* Copyright (c) 2004-2008 The Trustees of Indiana University and Indiana
|
|
* University Research and Technology
|
|
* Corporation. All rights reserved.
|
|
* Copyright (c) 2004-2005 The University of Tennessee and The University
|
|
* of Tennessee Research Foundation. All rights
|
|
* reserved.
|
|
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
|
|
* University of Stuttgart. All rights reserved.
|
|
* Copyright (c) 2004-2005 The Regents of the University of California.
|
|
* All rights reserved.
|
|
* Copyright (c) 2007-2011 Cisco Systems, Inc. All rights reserved.
|
|
* $COPYRIGHT$
|
|
*
|
|
* Additional copyrights may follow
|
|
*
|
|
* $HEADER$
|
|
*/
|
|
|
|
#include "opal_config.h"
|
|
|
|
#include <string.h>
|
|
|
|
#include "opal/constants.h"
|
|
#include "opal/util/show_help.h"
|
|
#include "opal/mca/base/mca_base_param.h"
|
|
#include "opal/mca/common/hwloc/common_hwloc.h"
|
|
#include "opal/mca/maffinity/maffinity.h"
|
|
#include "maffinity_hwloc.h"
|
|
|
|
/*
|
|
* Public string showing the maffinity ompi_hwloc component version number
|
|
*/
|
|
const char *opal_maffinity_hwloc_component_version_string =
|
|
"OPAL hwloc maffinity MCA component version " OPAL_VERSION;
|
|
|
|
/*
|
|
* Local function
|
|
*/
|
|
static int hwloc_open(void);
|
|
static int hwloc_close(void);
|
|
static int hwloc_register(void);
|
|
|
|
/*
|
|
* Instantiate the public struct with all of our public information
|
|
* and pointers to our public functions in it
|
|
*/
|
|
|
|
opal_maffinity_hwloc_component_2_0_0_t mca_maffinity_hwloc_component = {
|
|
{
|
|
/* First, the mca_component_t struct containing meta information
|
|
about the component itself */
|
|
{
|
|
OPAL_MAFFINITY_BASE_VERSION_2_0_0,
|
|
|
|
/* Component name and version */
|
|
"hwloc",
|
|
OPAL_MAJOR_VERSION,
|
|
OPAL_MINOR_VERSION,
|
|
OPAL_RELEASE_VERSION,
|
|
|
|
/* Component open and close functions */
|
|
hwloc_open,
|
|
hwloc_close,
|
|
opal_maffinity_hwloc_component_query,
|
|
hwloc_register,
|
|
},
|
|
{
|
|
/* The component is checkpoint ready */
|
|
MCA_BASE_METADATA_PARAM_CHECKPOINT
|
|
}
|
|
},
|
|
|
|
/* Priority */
|
|
40,
|
|
/* Default binding policy */
|
|
HWLOC_MEMBIND_STRICT,
|
|
|
|
/* NULL fill the rest of the component data */
|
|
};
|
|
|
|
|
|
static int hwloc_register(void)
|
|
{
|
|
int i;
|
|
char *val, *mca_policy;
|
|
|
|
/* Call the registration function of common hwloc */
|
|
opal_common_hwloc_register();
|
|
|
|
i = mca_base_param_find("common", NULL, "hwloc_version");
|
|
if (OPAL_ERROR != i) {
|
|
mca_base_param_reg_syn(i,
|
|
&mca_maffinity_hwloc_component.base.base_version,
|
|
"hwloc_version", false);
|
|
}
|
|
|
|
mca_base_param_reg_int(&mca_maffinity_hwloc_component.base.base_version,
|
|
"priority",
|
|
"Priority of the hwloc maffinity component",
|
|
false, false, 40,
|
|
&mca_maffinity_hwloc_component.priority);
|
|
|
|
/* Default memory binding policy */
|
|
val = (HWLOC_MEMBIND_STRICT == mca_maffinity_hwloc_component.bind_policy ?
|
|
"strict" : "loose");
|
|
mca_base_param_reg_string(&mca_maffinity_hwloc_component.base.base_version,
|
|
"policy",
|
|
"Binding policy that determines what happens if memory is unavailable on the local NUMA node. A value of \"strict\" means that the memory allocation will fail; a value of \"loose\" means that the memory allocation will spill over to another NUMA node.",
|
|
false, false, val, &mca_policy);
|
|
|
|
if (strcasecmp(mca_policy, "loose") == 0) {
|
|
mca_maffinity_hwloc_component.bind_policy = 0;
|
|
} else if (strcasecmp(mca_policy, "strict") == 0) {
|
|
mca_maffinity_hwloc_component.bind_policy = HWLOC_MEMBIND_STRICT;
|
|
} else {
|
|
opal_show_help("help-opal-maffinity-hwloc.txt", "invalid policy",
|
|
true, mca_policy, getpid());
|
|
mca_maffinity_hwloc_component.bind_policy = HWLOC_MEMBIND_STRICT;
|
|
return OPAL_ERR_BAD_PARAM;
|
|
}
|
|
|
|
return OPAL_SUCCESS;
|
|
}
|
|
|
|
|
|
static int hwloc_open(void)
|
|
{
|
|
/* Initialize hwloc */
|
|
if (0 != hwloc_topology_init(&(mca_maffinity_hwloc_component.topology)) ||
|
|
0 != hwloc_topology_load(mca_maffinity_hwloc_component.topology)) {
|
|
mca_maffinity_hwloc_component.topology = NULL;
|
|
return OPAL_ERR_NOT_AVAILABLE;
|
|
}
|
|
mca_maffinity_hwloc_component.topology_need_destroy = true;
|
|
|
|
return OPAL_SUCCESS;
|
|
}
|
|
|
|
static int hwloc_close(void)
|
|
{
|
|
/* If we set up hwloc, tear it down */
|
|
if (mca_maffinity_hwloc_component.topology_need_destroy) {
|
|
hwloc_topology_destroy(mca_maffinity_hwloc_component.topology);
|
|
mca_maffinity_hwloc_component.topology_need_destroy = false;
|
|
}
|
|
|
|
return OPAL_SUCCESS;
|
|
}
|