1
1
openmpi/opal/mca/reachable/weighted/reachable_weighted_component.c
Gabe Saba 3f8d294191 reachable: Enable weighted component / fix interface
Based on work from usNIC, the best way to use the reachability
information the reachable components return is to build a
connectivity graph between the two peers and run a bipartite
graph solver.  Rather than returning the "best" pairing,
the reachability framework now returns the entire mapping,
allowing a (soon to be added) graph solver to build the
"optimal" connectivity pairing.

Practically, this means changing the return type of the
reachable() function and rewriting the weighted_reachable()
function to return the full mapping.  The netlink_reachable()
function still always returns NULL.

At the same time, fix bit-rot in the weighted component and
enable builds of the component by removing the opal_ignore.
Also, add IPv6 support to the weighted component to support
both use cases in the TCP BTL.

Signed-off-by: Brian Barrett <bbarrett@amazon.com>
2017-09-19 19:42:54 -07:00

106 строки
3.2 KiB
C

/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
/*
* Copyright (c) 2014 Intel, Inc. All rights reserved.
* Copyright (c) 2014 Research Organization for Information Science
* and Technology (RIST). All rights reserved.
* Copyright (c) 2015 Los Alamos National Security, LLC. All rights
* reserved.
* Copyright (c) 2017 Amazon.com, Inc. or its affiliates.
* 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 "opal_config.h"
#include "opal/constants.h"
#include "opal/util/proc.h"
#include "opal/mca/reachable/reachable.h"
#include "reachable_weighted.h"
/*
* Public string showing the reachable weighted component version number
*/
const char *opal_reachable_weighted_component_version_string =
"OPAL weighted reachable MCA component version " OPAL_VERSION;
/*
* Local function
*/
static int reachable_weighted_open(void);
static int reachable_weighted_close(void);
static int reachable_weighted_component_query(mca_base_module_t **module, int *priority);
static int component_register(void);
/*
* Instantiate the public struct with all of our public information
* and pointers to our public functions in it
*/
opal_reachable_weighted_component_t mca_reachable_weighted_component = {
{
/* First, the mca_component_t struct containing meta information
about the component itself */
.base_version = {
/* Indicate that we are a reachable v1.1.0 component (which also
implies a specific MCA version) */
OPAL_REACHABLE_BASE_VERSION_2_0_0,
/* Component name and version */
.mca_component_name = "weighted",
MCA_BASE_MAKE_VERSION(component, OPAL_MAJOR_VERSION, OPAL_MINOR_VERSION,
OPAL_RELEASE_VERSION),
/* Component open and close functions */
.mca_open_component = reachable_weighted_open,
.mca_close_component = reachable_weighted_close,
.mca_query_component = reachable_weighted_component_query,
.mca_register_component_params = component_register,
},
/* Next the MCA v1.0.0 component meta data */
.base_data = {
/* The component is checkpoint ready */
MCA_BASE_METADATA_PARAM_CHECKPOINT
},
}
};
static int reachable_weighted_open(void)
{
/* construct the component fields */
return OPAL_SUCCESS;
}
static int reachable_weighted_close(void)
{
return OPAL_SUCCESS;
}
static int component_register(void)
{
return OPAL_SUCCESS;
}
static int reachable_weighted_component_query(mca_base_module_t **module, int *priority)
{
*priority = 1;
*module = (mca_base_module_t *)&opal_reachable_weighted_module;
return OPAL_SUCCESS;
}