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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
/*
* Copyright (c) 2004-2007 The Trustees of the University of Tennessee.
* All rights reserved.
* Copyright (c) 2015 Los Alamos National Security, LLC. All rights
* reserved.
* Copyright (c) 2022 IBM Corporation. All rights reserved
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#include "ompi/mca/mca.h"
#include "vprotocol_pessimist.h"
static int mca_vprotocol_pessimist_component_register(void);
static int mca_vprotocol_pessimist_component_open(void);
static int mca_vprotocol_pessimist_component_close(void);
static mca_vprotocol_base_module_t *mca_vprotocol_pessimist_component_init( int* priority, bool, bool);
static int mca_vprotocol_pessimist_component_finalize(void);
static int _priority;
static int _free_list_num;
static int _free_list_max;
static int _free_list_inc;
static int _sender_based_size;
static int _event_buffer_size;
static char *_mmap_file_name;
static int ompi_vprotocol_pessimist_allow_thread_multiple;
mca_vprotocol_base_component_2_0_0_t mca_vprotocol_pessimist_component =
{
/* First, the mca_base_component_t struct containing meta
* information about the component itself */
.pmlm_version = {
MCA_VPROTOCOL_BASE_VERSION_2_0_0,
.mca_component_name = "pessimist",
.mca_component_major_version = OMPI_MAJOR_VERSION,
.mca_component_minor_version = OMPI_MINOR_VERSION,
.mca_component_release_version = OMPI_RELEASE_VERSION,
.mca_open_component = mca_vprotocol_pessimist_component_open,
.mca_close_component = mca_vprotocol_pessimist_component_close,
.mca_register_component_params = mca_vprotocol_pessimist_component_register,
},
.pmlm_data = {
/* component is not checkpointable */
MCA_BASE_METADATA_PARAM_NONE
},
.pmlm_init = mca_vprotocol_pessimist_component_init,
.pmlm_finalize = mca_vprotocol_pessimist_component_finalize,
};
/** MCA level functions
*/
static int mca_vprotocol_pessimist_component_register(void)
{
_priority = 30;
(void) mca_base_component_var_register(&mca_vprotocol_pessimist_component.pmlm_version,
"priority", NULL, MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
OPAL_INFO_LVL_9,
MCA_BASE_VAR_SCOPE_READONLY, &_priority);\
_free_list_num = 16;
(void) mca_base_component_var_register(&mca_vprotocol_pessimist_component.pmlm_version,
"free_list_num", NULL, MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
OPAL_INFO_LVL_9,
MCA_BASE_VAR_SCOPE_READONLY, &_free_list_num);
_free_list_max = -1;
(void) mca_base_component_var_register(&mca_vprotocol_pessimist_component.pmlm_version,
"free_list_max", NULL, MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
OPAL_INFO_LVL_9,
MCA_BASE_VAR_SCOPE_READONLY, &_free_list_max);
_free_list_inc = 64;
(void) mca_base_component_var_register(&mca_vprotocol_pessimist_component.pmlm_version,
"free_list_inc", NULL, MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
OPAL_INFO_LVL_9,
MCA_BASE_VAR_SCOPE_READONLY, &_free_list_inc);
_sender_based_size = 256 * 1024 * 1024;
(void) mca_base_component_var_register(&mca_vprotocol_pessimist_component.pmlm_version,
"sender_based_chunk", NULL, MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
OPAL_INFO_LVL_9,
MCA_BASE_VAR_SCOPE_READONLY, &_sender_based_size);
_event_buffer_size = 1024;
(void) mca_base_component_var_register(&mca_vprotocol_pessimist_component.pmlm_version,
"event_buffer_size", NULL, MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
OPAL_INFO_LVL_9,
MCA_BASE_VAR_SCOPE_READONLY, &_event_buffer_size);
_mmap_file_name = "vprotocol_pessimist-senderbased";
(void) mca_base_component_var_register(&mca_vprotocol_pessimist_component.pmlm_version,
"sender_based_file", NULL, MCA_BASE_VAR_TYPE_STRING, NULL, 0, 0,
OPAL_INFO_LVL_9,
MCA_BASE_VAR_SCOPE_READONLY, &_mmap_file_name);
/* Provide an overwrite allowing the PML V to run even if the OMPI library has been
* initialized with full support for THREAD_MULTIPLE.
*/
ompi_vprotocol_pessimist_allow_thread_multiple = 0;
(void) mca_base_component_var_register(&mca_vprotocol_pessimist_component.pmlm_version,
"allow_thread_multiple", "Allow the PML V to work even when the MPI"
" library is initialized with MPI_THREAD_MULTIPLE support. By "
"default the PML V is disabled in such instances, to protect "
"applications that are not send deterministic.",
MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
OPAL_INFO_LVL_9, MCA_BASE_VAR_SCOPE_READONLY,
&ompi_vprotocol_pessimist_allow_thread_multiple);
return OMPI_SUCCESS;
}
static int mca_vprotocol_pessimist_component_open(void)
{
V_OUTPUT_VERBOSE(500, "vprotocol_pessimist: component_open: read priority %d", _priority);
return OMPI_SUCCESS;
}
static int mca_vprotocol_pessimist_component_close(void)
{
V_OUTPUT_VERBOSE(500, "vprotocol_pessimist: component_close");
return OMPI_SUCCESS;
}
/** VPROTOCOL level functions (same as PML one)
*/
static mca_vprotocol_base_module_t*
mca_vprotocol_pessimist_component_init( int* priority,
bool enable_progress_threads,
bool enable_mpi_threads)
{
V_OUTPUT_VERBOSE(500, "vprotocol_pessimist: component_init");
*priority = _priority;
/* sanity check */
if(enable_mpi_threads && !ompi_vprotocol_pessimist_allow_thread_multiple) {
/**
* Prevent the pessimistic protocol from activating if we are in a potentially multithreaded
* applications. The reason is that without tracking the thread initiator of messages it is
* extrmely difficult to provide a global message ordering in threaded-scenarios. Thus, the
* safe approach is to turn off the logger.
*/
opal_output(0, "vprotocol_pessimist: component_init: threads are enabled, and not supported by vprotocol pessimist fault tolerant layer, will not load");
return NULL;
}
mca_vprotocol_pessimist.clock = 1;
mca_vprotocol_pessimist.replay = false;
OBJ_CONSTRUCT(&mca_vprotocol_pessimist.replay_events, opal_list_t);
OBJ_CONSTRUCT(&mca_vprotocol_pessimist.pending_events, opal_list_t);
OBJ_CONSTRUCT(&mca_vprotocol_pessimist.events_pool, opal_free_list_t);
opal_free_list_init (&mca_vprotocol_pessimist.events_pool,
sizeof(mca_vprotocol_pessimist_event_t),
opal_cache_line_size,
OBJ_CLASS(mca_vprotocol_pessimist_event_t),
0,opal_cache_line_size,
_free_list_num,
_free_list_max,
_free_list_inc,
NULL, 0, NULL, NULL, NULL);
mca_vprotocol_pessimist.event_buffer_max_length =
_event_buffer_size / sizeof(vprotocol_pessimist_mem_event_t);
mca_vprotocol_pessimist.event_buffer_length = 0;
mca_vprotocol_pessimist.event_buffer =
(vprotocol_pessimist_mem_event_t *) malloc(_event_buffer_size);
mca_vprotocol_pessimist.el_comm = MPI_COMM_NULL;
return &mca_vprotocol_pessimist.super;
}
static int mca_vprotocol_pessimist_component_finalize(void)
{
V_OUTPUT_VERBOSE(500, "vprotocol_pessimist_finalize");
free(mca_vprotocol_pessimist.event_buffer);
OBJ_DESTRUCT(&mca_vprotocol_pessimist.replay_events);
OBJ_DESTRUCT(&mca_vprotocol_pessimist.pending_events);
OBJ_DESTRUCT(&mca_vprotocol_pessimist.events_pool);
return OMPI_SUCCESS;
}
int mca_vprotocol_pessimist_enable(bool enable) {
if(enable) {
int ret;
if((ret = ompi_vprotocol_pessimist_sender_based_init(_mmap_file_name,
_sender_based_size)) != OMPI_SUCCESS)
return ret;
}
else {
ompi_vprotocol_pessimist_sender_based_finalize();
ompi_vprotocol_pessimist_event_logger_disconnect(mca_vprotocol_pessimist.el_comm);
}
return OMPI_SUCCESS;
}
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