8736a1c138
http://www.open-mpi.org/community/lists/devel/2014/05/14822.php Revamp the ORTE global data structures to reduce memory footprint and add new features. Add ability to control/set cpu frequency, though this can only be done if the sys admin has setup the system to support it (or you run as root). This commit was SVN r31916.
119 строки
3.6 KiB
C
119 строки
3.6 KiB
C
/*
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* Copyright (c) 2004-2005 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) 2004-2011 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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* $COPYRIGHT$
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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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#include "orte_config.h"
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#include "orte/constants.h"
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#include <stdio.h>
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#include "opal/hash_string.h"
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#include "orte/mca/errmgr/errmgr.h"
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#include "orte/util/proc_info.h"
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#include "orte/util/name_fns.h"
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#include "orte/runtime/orte_globals.h"
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#include "orte/mca/plm/base/plm_private.h"
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/*
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* attempt to create a globally unique name - do a hash
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* of the hostname plus pid
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*/
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int orte_plm_base_set_hnp_name(void)
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{
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uint16_t jobfam;
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uint32_t hash32;
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uint32_t bias;
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/* hash the nodename */
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OPAL_HASH_STR(orte_process_info.nodename, hash32);
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bias = (uint32_t)orte_process_info.pid;
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OPAL_OUTPUT_VERBOSE((5, orte_plm_base_framework.framework_output,
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"plm:base:set_hnp_name: initial bias %ld nodename hash %lu",
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(long)bias, (unsigned long)hash32));
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/* fold in the bias */
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hash32 = hash32 ^ bias;
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/* now compress to 16-bits */
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jobfam = (uint16_t)(((0x0000ffff & (0xffff0000 & hash32) >> 16)) ^ (0x0000ffff & hash32));
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OPAL_OUTPUT_VERBOSE((5, orte_plm_base_framework.framework_output,
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"plm:base:set_hnp_name: final jobfam %lu",
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(unsigned long)jobfam));
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/* set the name */
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ORTE_PROC_MY_NAME->jobid = 0xffff0000 & ((uint32_t)jobfam << 16);
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ORTE_PROC_MY_NAME->vpid = 0;
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/* copy it to the HNP field */
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ORTE_PROC_MY_HNP->jobid = ORTE_PROC_MY_NAME->jobid;
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ORTE_PROC_MY_HNP->vpid = ORTE_PROC_MY_NAME->vpid;
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/* done */
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return ORTE_SUCCESS;
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}
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/*
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* Create a jobid
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*/
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int orte_plm_base_create_jobid(orte_job_t *jdata)
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{
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#if 0
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int32_t j;
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/* RHC: WHILE ORTE CAN NOW HANDLE RECYCLING OF JOBID'S,
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* THE MPI LAYER CANNOT SINCE THERE IS NO WAY TO
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* UPDATE THE OMPI_PROC_T LIST AND/OR THE BTL'S
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*/
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/* see if there is a prior
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* jobid that has completed and can be re-used. It can
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* never be 0 as that belongs to the HNP and its daemons
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*/
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for (j=1; j < orte_job_data->size; j++) {
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if (NULL == opal_pointer_array_get_item(orte_job_data, j)) {
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/* this local jobid is available - reuse it */
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jdata->jobid = ORTE_CONSTRUCT_LOCAL_JOBID(ORTE_PROC_MY_NAME->jobid, j);
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return ORTE_SUCCESS;
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}
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}
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#endif
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if (ORTE_FLAG_TEST(jdata, ORTE_JOB_FLAG_RESTART)) {
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/* this job is being restarted - do not assign it
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* a new jobid
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*/
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return ORTE_SUCCESS;
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}
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if (UINT16_MAX == orte_plm_globals.next_jobid) {
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/* if we get here, then no local jobids are available */
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ORTE_ERROR_LOG(ORTE_ERR_OUT_OF_RESOURCE);
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jdata->jobid = ORTE_JOBID_INVALID;
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return ORTE_ERR_OUT_OF_RESOURCE;
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}
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/* take the next jobid */
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jdata->jobid = ORTE_CONSTRUCT_LOCAL_JOBID(ORTE_PROC_MY_NAME->jobid, orte_plm_globals.next_jobid);
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orte_plm_globals.next_jobid++;
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return ORTE_SUCCESS;
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}
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