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/*
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2011 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) 2016 Intel, Inc. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "orte_config.h"
#include "orte/constants.h"
#include <stdio.h>
#include "opal/hash_string.h"
#include "orte/mca/errmgr/errmgr.h"
#include "orte/util/proc_info.h"
#include "orte/util/name_fns.h"
#include "orte/runtime/orte_globals.h"
#include "orte/mca/plm/base/plm_private.h"
/*
* attempt to create a globally unique name - do a hash
* of the hostname plus pid
*/
int orte_plm_base_set_hnp_name(void)
{
uint16_t jobfam;
uint32_t hash32;
uint32_t bias;
/* hash the nodename */
OPAL_HASH_STR(orte_process_info.nodename, hash32);
bias = (uint32_t)orte_process_info.pid;
OPAL_OUTPUT_VERBOSE((5, orte_plm_base_framework.framework_output,
"plm:base:set_hnp_name: initial bias %ld nodename hash %lu",
(long)bias, (unsigned long)hash32));
/* fold in the bias */
hash32 = hash32 ^ bias;
/* now compress to 16-bits */
jobfam = (uint16_t)(((0x0000ffff & (0xffff0000 & hash32) >> 16)) ^ (0x0000ffff & hash32));
OPAL_OUTPUT_VERBOSE((5, orte_plm_base_framework.framework_output,
"plm:base:set_hnp_name: final jobfam %lu",
(unsigned long)jobfam));
/* set the name */
ORTE_PROC_MY_NAME->jobid = 0xffff0000 & ((uint32_t)jobfam << 16);
ORTE_PROC_MY_NAME->vpid = 0;
/* copy it to the HNP field */
ORTE_PROC_MY_HNP->jobid = ORTE_PROC_MY_NAME->jobid;
ORTE_PROC_MY_HNP->vpid = ORTE_PROC_MY_NAME->vpid;
/* done */
return ORTE_SUCCESS;
}
/*
* Create a jobid
*/
int orte_plm_base_create_jobid(orte_job_t *jdata)
{
if (ORTE_FLAG_TEST(jdata, ORTE_JOB_FLAG_RESTART)) {
/* this job is being restarted - do not assign it
* a new jobid
*/
return ORTE_SUCCESS;
}
if (UINT16_MAX == orte_plm_globals.next_jobid) {
/* if we get here, then no local jobids are available */
ORTE_ERROR_LOG(ORTE_ERR_OUT_OF_RESOURCE);
jdata->jobid = ORTE_JOBID_INVALID;
return ORTE_ERR_OUT_OF_RESOURCE;
}
/* take the next jobid */
jdata->jobid = ORTE_CONSTRUCT_LOCAL_JOBID(ORTE_PROC_MY_NAME->jobid, orte_plm_globals.next_jobid);
orte_plm_globals.next_jobid++;
return ORTE_SUCCESS;
}
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