a753c3ece0
Note this alps ess component has nothing to do with the old CNOS alps component used on Cray Seastar/Portals3 (Cray XT) systems. To work properly, changes need to be made to the open method of the ess/pmi component to keep it from selecting, and thus initializing, the opal/pmix/cray component.
124 строки
3.8 KiB
C
124 строки
3.8 KiB
C
/*
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* Copyright (c) 2004-2008 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) 2004-2005 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) 2011-2012 Los Alamos National Security, LLC.
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* All rights 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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* These symbols are in a file by themselves to provide nice linker
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* semantics. Since linkers generally pull in symbols by object
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* files, keeping these symbols as the only symbols in this file
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* prevents utility programs such as "ompi_info" from having to import
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* entire components just to query their version and parameters.
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*/
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#include "orte_config.h"
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#include "orte/constants.h"
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#include "orte/runtime/orte_globals.h"
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#include "orte/util/proc_info.h"
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#include "orte/mca/ess/ess.h"
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#include "orte/mca/ess/base/base.h"
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#include "orte/mca/ess/alps/ess_alps.h"
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#include <sys/syscall.h>
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/*
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* Instantiate the public struct with all of our public information
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* and pointers to our public functions in it
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*/
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orte_ess_base_component_t mca_ess_alps_component = {
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/* First, the mca_component_t struct containing meta information
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about the component itself */
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{
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ORTE_ESS_BASE_VERSION_3_0_0,
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/* Component name and version */
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"alps",
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ORTE_MAJOR_VERSION,
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ORTE_MINOR_VERSION,
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ORTE_RELEASE_VERSION,
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/* Component open and close functions */
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orte_ess_alps_component_open,
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orte_ess_alps_component_close,
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orte_ess_alps_component_query
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},
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{
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/* The component is not checkpoint ready */
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MCA_BASE_METADATA_PARAM_NONE
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}
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};
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int
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orte_ess_alps_component_open(void)
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{
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return ORTE_SUCCESS;
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}
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int orte_ess_alps_component_query(mca_base_module_t **module, int *priority)
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{
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int rc = ORTE_SUCCESS;
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const char proc_job_file[]="/proc/job";
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FILE *fd = NULL, *fd_task_is_app = NULL;
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char task_is_app_fname[PATH_MAX];
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/*
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* don't use the alps ess component if an app proc
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*/
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if (ORTE_PROC_IS_APP) {
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*priority = 0;
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*module = NULL;
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return ORTE_ERROR;
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}
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/*
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* make sure we're in a Cray PAGG container, and that we are also on
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* a compute node (i.e. we are thought of as an application task by
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* the cray job kernel module - the thing that creates the PAGG)
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*/
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/* disqualify ourselves if not running in a Cray PAGG container */
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fd = fopen(proc_job_file, "r");
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if (fd == NULL) {
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*priority = 0;
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*module = NULL;
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rc = ORTE_ERROR;
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} else {
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snprintf(task_is_app_fname,sizeof(task_is_app_fname),
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"/proc/self/task/%ld/task_is_app",syscall(SYS_gettid));
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fd_task_is_app = fopen(task_is_app_fname, "r");
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if (fd_task_is_app != NULL) { /* okay we're in a PAGG container,
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and we are an app task (not just a process
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running on a mom node, for example),
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so we should give cray pmi a shot. */
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*priority = 35; /* take precendence over base */
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*module = (mca_base_module_t *) &orte_ess_alps_module;
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fclose(fd_task_is_app);
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}
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fclose(fd);
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}
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return rc;
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}
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int
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orte_ess_alps_component_close(void)
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{
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return ORTE_SUCCESS;
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}
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