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openmpi/ompi/mca/fcoll/vulcan/fcoll_vulcan_component.c
raafatfeki 5ecb4a56e3 fcoll/vulcan: Support of asynchronous write in collective writeAll
We introduced a new mca_vulcan parameter that specify the I/O synchronization
type (Async/sync I/O) applied within the collective write operation.
The user can explicitly choose to use async or sync write operation or make
the choice automatically made.

Signed-off-by: raafatfeki <fekiraafat@gmail.com>
2018-06-07 16:13:12 -05:00

116 строки
4.8 KiB
C

/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
/*
* Copyright (c) 2004-2007 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) 2008 Cisco Systems, Inc. All rights reserved.
* Copyright (c) 2008-2017 University of Houston. All rights reserved.
* Copyright (c) 2015 Los Alamos National Security, LLC. All rights
* reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*
* These symbols are in a file by themselves to provide nice linker
* semantics. Since linkers generally pull in symbols by object
* files, keeping these symbols as the only symbols in this file
* prevents utility programs such as "ompi_info" from having to import
* entire components just to query their version and parameters.
*/
#include "ompi_config.h"
#include "fcoll_vulcan.h"
#include "mpi.h"
/*
* Public string showing the fcoll ompi_vulcan component version number
*/
const char *mca_fcoll_vulcan_component_version_string =
"Open MPI vulcan collective MCA component version " OMPI_VERSION;
/*
* Global variables
*/
int mca_fcoll_vulcan_priority = 10;
int mca_fcoll_vulcan_num_groups = 1;
int mca_fcoll_vulcan_write_chunksize = -1;
int mca_fcoll_vulcan_async_io = 0;
/*
* Local function
*/
static int vulcan_register(void);
/*
* Instantiate the public struct with all of our public information
* and pointers to our public functions in it
*/
mca_fcoll_base_component_2_0_0_t mca_fcoll_vulcan_component = {
/* First, the mca_component_t struct containing meta information
* about the component itself */
.fcollm_version = {
MCA_FCOLL_BASE_VERSION_2_0_0,
/* Component name and version */
.mca_component_name = "vulcan",
MCA_BASE_MAKE_VERSION(component, OMPI_MAJOR_VERSION, OMPI_MINOR_VERSION,
OMPI_RELEASE_VERSION),
.mca_register_component_params = vulcan_register,
},
.fcollm_data = {
/* The component is checkpoint ready */
MCA_BASE_METADATA_PARAM_CHECKPOINT
},
.fcollm_init_query = mca_fcoll_vulcan_component_init_query,
.fcollm_file_query = mca_fcoll_vulcan_component_file_query,
.fcollm_file_unquery = mca_fcoll_vulcan_component_file_unquery,
};
static int
vulcan_register(void)
{
mca_fcoll_vulcan_priority = 10;
(void) mca_base_component_var_register(&mca_fcoll_vulcan_component.fcollm_version,
"priority", "Priority of the vulcan fcoll component",
MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
OPAL_INFO_LVL_9,
MCA_BASE_VAR_SCOPE_READONLY, &mca_fcoll_vulcan_priority);
mca_fcoll_vulcan_num_groups = 1;
(void) mca_base_component_var_register(&mca_fcoll_vulcan_component.fcollm_version,
"num_groups", "Number of subgroups created by the vulcan component",
MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
OPAL_INFO_LVL_9,
MCA_BASE_VAR_SCOPE_READONLY, &mca_fcoll_vulcan_num_groups);
mca_fcoll_vulcan_write_chunksize = -1;
(void) mca_base_component_var_register(&mca_fcoll_vulcan_component.fcollm_version,
"write_chunksize", "Chunk size written at once. Default: stripe_size of the file system",
MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
OPAL_INFO_LVL_9,
MCA_BASE_VAR_SCOPE_READONLY, &mca_fcoll_vulcan_write_chunksize);
mca_fcoll_vulcan_async_io = 0;
(void) mca_base_component_var_register(&mca_fcoll_vulcan_component.fcollm_version,
"async_io", "Asynchronous I/O support options. 0: Automatic choice (default) "
"1: Asynchronous I/O only. 2: Synchronous I/O only.",
MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
OPAL_INFO_LVL_9,
MCA_BASE_VAR_SCOPE_READONLY, &mca_fcoll_vulcan_async_io);
return OMPI_SUCCESS;
}