aec5cd08bd
WHAT: Merge the PMIx branch into the devel repo, creating a new
OPAL “lmix” framework to abstract PMI support for all RTEs.
Replace the ORTE daemon-level collectives with a new PMIx
server and update the ORTE grpcomm framework to support
server-to-server collectives
WHY: We’ve had problems dealing with variations in PMI implementations,
and need to extend the existing PMI definitions to meet exascale
requirements.
WHEN: Mon, Aug 25
WHERE: https://github.com/rhc54/ompi-svn-mirror.git
Several community members have been working on a refactoring of the current PMI support within OMPI. Although the APIs are common, Slurm and Cray implement a different range of capabilities, and package them differently. For example, Cray provides an integrated PMI-1/2 library, while Slurm separates the two and requires the user to specify the one to be used at runtime. In addition, several bugs in the Slurm implementations have caused problems requiring extra coding.
All this has led to a slew of #if’s in the PMI code and bugs when the corner-case logic for one implementation accidentally traps the other. Extending this support to other implementations would have increased this complexity to an unacceptable level.
Accordingly, we have:
* created a new OPAL “pmix” framework to abstract the PMI support, with separate components for Cray, Slurm PMI-1, and Slurm PMI-2 implementations.
* Replaced the current ORTE grpcomm daemon-based collective operation with an integrated PMIx server, and updated the grpcomm APIs to provide more flexible, multi-algorithm support for collective operations. At this time, only the xcast and allgather operations are supported.
* Replaced the current global collective id with a signature based on the names of the participating procs. The allows an unlimited number of collectives to be executed by any group of processes, subject to the requirement that only one collective can be active at a time for a unique combination of procs. Note that a proc can be involved in any number of simultaneous collectives - it is the specific combination of procs that is subject to the constraint
* removed the prior OMPI/OPAL modex code
* added new macros for executing modex send/recv to simplify use of the new APIs. The send macros allow the caller to specify whether or not the BTL supports async modex operations - if so, then the non-blocking “fence” operation is used, if the active PMIx component supports it. Otherwise, the default is a full blocking modex exchange as we currently perform.
* retained the current flag that directs us to use a blocking fence operation, but only to retrieve data upon demand
This commit was SVN r32570.
145 строки
5.1 KiB
C
145 строки
5.1 KiB
C
/*
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* Copyright (c) 2004-2007 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 Cisco Systems, Inc. All rights reserved.
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* Copyright (c) 2011 Los Alamos National Security, LLC. All rights
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* 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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/** @file:
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*/
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#ifndef MCA_ODLS_PRIVATE_H
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#define MCA_ODLS_PRIVATE_H
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/*
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* includes
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*/
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#include "orte_config.h"
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#include "orte/types.h"
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#include "opal/class/opal_list.h"
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#include "opal/class/opal_pointer_array.h"
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#include "opal/class/opal_bitmap.h"
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#include "opal/dss/dss_types.h"
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#include "orte/mca/rml/rml_types.h"
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#include "orte/runtime/orte_globals.h"
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#include "orte/mca/odls/odls_types.h"
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BEGIN_C_DECLS
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/*
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* General ODLS types
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*/
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typedef struct {
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/** Verbose/debug output stream */
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int output;
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/** Time to allow process to forcibly die */
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int timeout_before_sigkill;
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/* list of ranks to be displayed on separate xterms */
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opal_list_t xterm_ranks;
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/* the xterm cmd to be used */
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char **xtermcmd;
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} orte_odls_globals_t;
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ORTE_DECLSPEC extern orte_odls_globals_t orte_odls_globals;
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/*
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* Default functions that are common to most environments - can
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* be overridden by specific environments if they need something
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* different (e.g., bproc)
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*/
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ORTE_DECLSPEC int
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orte_odls_base_default_get_add_procs_data(opal_buffer_t *data,
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orte_jobid_t job);
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ORTE_DECLSPEC int
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orte_odls_base_default_construct_child_list(opal_buffer_t *data,
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orte_jobid_t *job);
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/* define a function that will fork a local proc */
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typedef int (*orte_odls_base_fork_local_proc_fn_t)(orte_app_context_t *context,
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orte_proc_t *child,
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char **environ_copy,
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orte_job_t *jdata);
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/* define an object for starting local launch */
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typedef struct {
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opal_object_t object;
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opal_event_t *ev;
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orte_jobid_t job;
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orte_odls_base_fork_local_proc_fn_t fork_local;
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int retries;
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} orte_odls_launch_local_t;
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OBJ_CLASS_DECLARATION(orte_odls_launch_local_t);
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#define ORTE_ACTIVATE_LOCAL_LAUNCH(j, f) \
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do { \
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orte_odls_launch_local_t *ll; \
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ll = OBJ_NEW(orte_odls_launch_local_t); \
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ll->job = (j); \
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ll->fork_local = (f); \
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opal_event_set(orte_event_base, ll->ev, -1, OPAL_EV_WRITE, \
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orte_odls_base_default_launch_local, ll); \
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opal_event_set_priority(ll->ev, ORTE_SYS_PRI); \
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opal_event_active(ll->ev, OPAL_EV_WRITE, 1); \
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} while(0);
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ORTE_DECLSPEC void orte_odls_base_default_launch_local(int fd, short sd, void *cbdata);
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ORTE_DECLSPEC int
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orte_odls_base_default_deliver_message(orte_jobid_t job, opal_buffer_t *buffer, orte_rml_tag_t tag);
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ORTE_DECLSPEC void odls_base_default_wait_local_proc(orte_proc_t *proc, void* cbdata);
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/* define a function type to signal a local proc */
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typedef int (*orte_odls_base_signal_local_fn_t)(pid_t pid, int signum);
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ORTE_DECLSPEC int
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orte_odls_base_default_signal_local_procs(const orte_process_name_t *proc, int32_t signal,
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orte_odls_base_signal_local_fn_t signal_local);
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/* define a function type for killing a local proc */
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typedef int (*orte_odls_base_kill_local_fn_t)(pid_t pid, int signum);
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/* define a function type to detect that a child died */
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typedef bool (*orte_odls_base_child_died_fn_t)(orte_proc_t *child);
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ORTE_DECLSPEC int
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orte_odls_base_default_kill_local_procs(opal_pointer_array_t *procs,
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orte_odls_base_kill_local_fn_t kill_local,
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orte_odls_base_child_died_fn_t child_died);
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ORTE_DECLSPEC int orte_odls_base_default_restart_proc(orte_proc_t *child,
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orte_odls_base_fork_local_proc_fn_t fork_local);
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/*
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* Preload binary/files functions
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*/
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ORTE_DECLSPEC int orte_odls_base_preload_files_app_context(orte_app_context_t* context);
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/*
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* Obtain process stats on a child proc
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*/
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ORTE_DECLSPEC int orte_odls_base_get_proc_stats(opal_buffer_t *answer, orte_process_name_t *proc);
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END_C_DECLS
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#endif
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