6310361532
https://svn.open-mpi.org/trac/ompi/wiki/ProcessPlacement The wiki page is incomplete at the moment, but I hope to complete it over the next few days. I will provide updates on the devel list. As the wiki page states, the default and most commonly used options remain unchanged (except as noted below). New, esoteric and complex options have been added, but unless you are a true masochist, you are unlikely to use many of them beyond perhaps an initial curiosity-motivated experimentation. In a nutshell, this commit revamps the map/rank/bind procedure to take into account topology info on the compute nodes. I have, for the most part, preserved the default behaviors, with three notable exceptions: 1. I have at long last bowed my head in submission to the system admin's of managed clusters. For years, they have complained about our default of allowing users to oversubscribe nodes - i.e., to run more processes on a node than allocated slots. Accordingly, I have modified the default behavior: if you are running off of hostfile/dash-host allocated nodes, then the default is to allow oversubscription. If you are running off of RM-allocated nodes, then the default is to NOT allow oversubscription. Flags to override these behaviors are provided, so this only affects the default behavior. 2. both cpus/rank and stride have been removed. The latter was demanded by those who didn't understand the purpose behind it - and I agreed as the users who requested it are no longer using it. The former was removed temporarily pending implementation. 3. vm launch is now the sole method for starting OMPI. It was just too darned hard to maintain multiple launch procedures - maybe someday, provided someone can demonstrate a reason to do so. As Jeff stated, it is impossible to fully test a change of this size. I have tested it on Linux and Mac, covering all the default and simple options, singletons, and comm_spawn. That said, I'm sure others will find problems, so I'll be watching MTT results until this stabilizes. This commit was SVN r25476.
165 строки
4.2 KiB
C
165 строки
4.2 KiB
C
/*
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* Copyright (c) 2011 Cisco Systems, Inc. All rights reserved.
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*
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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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#ifndef OPAL_MCA_HWLOC_H
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#define OPAL_MCA_HWLOC_H
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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_SYS_TIME_H
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#include <sys/time.h>
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#endif
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#ifdef HAVE_STDINT_H
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#include <stdint.h>
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#endif
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#ifdef HAVE_STDARG_H
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#include <stdarg.h>
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#endif
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#include "opal/class/opal_list.h"
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#include "opal/class/opal_value_array.h"
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#include "opal/mca/mca.h"
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#include "opal/mca/base/base.h"
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BEGIN_C_DECLS
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#ifdef WIN32
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#define WIN32_LEAN_AND_MEAN
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#include <windows.h>
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#undef WIN32_LEAN_AND_MEAN
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typedef unsigned char u_char;
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typedef unsigned short u_short;
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#endif
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/**
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* Structure for hwloc components.
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*/
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struct opal_hwloc_base_component_2_0_0_t {
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/** MCA base component */
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mca_base_component_t base_version;
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/** MCA base data */
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mca_base_component_data_t base_data;
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};
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/**
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* Convenience typedef
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*/
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typedef struct opal_hwloc_base_component_2_0_0_t opal_hwloc_base_component_2_0_0_t;
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typedef struct opal_hwloc_base_component_2_0_0_t opal_hwloc_component_t;
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/**
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* Macro for use in components that are of type hwloc
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*/
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#define OPAL_HWLOC_BASE_VERSION_2_0_0 \
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MCA_BASE_VERSION_2_0_0, \
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"hwloc", 2, 0, 0
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END_C_DECLS
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/* Define a hierarchical level value that
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* helps resolve the hwloc behavior of
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* treating caches as a single type of
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* entity - must always be available
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*/
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typedef enum uint8_t {
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OPAL_HWLOC_NODE_LEVEL=0,
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OPAL_HWLOC_NUMA_LEVEL,
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OPAL_HWLOC_SOCKET_LEVEL,
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OPAL_HWLOC_L3CACHE_LEVEL,
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OPAL_HWLOC_L2CACHE_LEVEL,
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OPAL_HWLOC_L1CACHE_LEVEL,
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OPAL_HWLOC_CORE_LEVEL,
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OPAL_HWLOC_HWTHREAD_LEVEL
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} opal_hwloc_level_t;
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#define OPAL_HWLOC_LEVEL_T OPAL_UINT8
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/* include implementation to call */
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#if OPAL_HAVE_HWLOC
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#include MCA_hwloc_IMPLEMENTATION_HEADER
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/* define type of processor info requested */
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typedef uint8_t opal_hwloc_resource_type_t;
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#define OPAL_HWLOC_PHYSICAL 1
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#define OPAL_HWLOC_LOGICAL 2
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#define OPAL_HWLOC_AVAILABLE 3
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/* structs for storing info on objects */
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typedef struct {
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opal_object_t super;
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hwloc_cpuset_t available;
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unsigned int npus;
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unsigned int idx;
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} opal_hwloc_obj_data_t;
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OBJ_CLASS_DECLARATION(opal_hwloc_obj_data_t);
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typedef struct {
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opal_list_item_t super;
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hwloc_obj_type_t type;
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unsigned cache_level;
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unsigned int num_objs;
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opal_hwloc_resource_type_t rtype;
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} opal_hwloc_summary_t;
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OBJ_CLASS_DECLARATION(opal_hwloc_summary_t);
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typedef struct {
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opal_object_t super;
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hwloc_cpuset_t available;
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opal_list_t summaries;
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} opal_hwloc_topo_data_t;
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OBJ_CLASS_DECLARATION(opal_hwloc_topo_data_t);
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/* define binding policies */
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typedef uint16_t opal_binding_policy_t;
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#define OPAL_BINDING_POLICY OPAL_UINT16
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/* binding directives */
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#define OPAL_BIND_IF_SUPPORTED 0x1000
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#define OPAL_BIND_ALLOW_OVERLOAD 0x2000
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#define OPAL_BIND_GIVEN 0x4000
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/* binding policies */
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#define OPAL_BIND_TO_NONE 1
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#define OPAL_BIND_TO_BOARD 2
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#define OPAL_BIND_TO_NUMA 3
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#define OPAL_BIND_TO_SOCKET 4
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#define OPAL_BIND_TO_L3CACHE 5
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#define OPAL_BIND_TO_L2CACHE 6
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#define OPAL_BIND_TO_L1CACHE 7
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#define OPAL_BIND_TO_CORE 8
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#define OPAL_BIND_TO_HWTHREAD 9
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#define OPAL_BIND_TO_CPUSET 10
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#define OPAL_GET_BINDING_POLICY(pol) \
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((pol) & 0x0fff)
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#define OPAL_SET_BINDING_POLICY(target, pol) \
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(target) = (pol) | ((target) & 0xf000)
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/* check if policy is set */
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#define OPAL_BINDING_POLICY_IS_SET(pol) \
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((pol) & 0x4000)
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/* macro to detect if binding was qualified */
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#define OPAL_BINDING_REQUIRED(n) \
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(!(OPAL_BIND_IF_SUPPORTED & (n)))
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/* macro to detect if binding is forced */
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#define OPAL_BIND_OVERLOAD_ALLOWED(n) \
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(OPAL_BIND_ALLOW_OVERLOAD & (n))
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/* some global values */
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OPAL_DECLSPEC extern hwloc_topology_t opal_hwloc_topology;
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OPAL_DECLSPEC extern opal_binding_policy_t opal_hwloc_binding_policy;
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OPAL_DECLSPEC extern hwloc_cpuset_t opal_hwloc_my_cpuset;
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OPAL_DECLSPEC extern bool opal_hwloc_report_bindings;
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OPAL_DECLSPEC extern hwloc_obj_type_t opal_hwloc_levels[];
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OPAL_DECLSPEC extern bool opal_hwloc_use_hwthreads_as_cpus;
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#endif
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#endif /* OPAL_HWLOC_H_ */
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