/*****************************************************************************\ * pmi.c - Process Management Interface for MPICH2 * See http://www-unix.mcs.anl.gov/mpi/mpich2/ * * NOTE: Dynamic Process Management functions (PMI part 2) are not supported * at this time. Functions required for MPI-1 (PMI part 1) are supported. ***************************************************************************** * COPYRIGHT: For the function definitions * * The following is a notice of limited availability of the code, and * disclaimer which must be included in the prologue of the code and in all * source listings of the code. * * Copyright Notice + 2002 University of Chicago * * Permission is hereby granted to use, reproduce, prepare derivative * works, and to redistribute to others. This software was authored by: * * Argonne National Laboratory Group * W. Gropp: (630) 252-4318; FAX: (630) 252-5986; e-mail: gropp@mcs.anl.gov * E. Lusk: (630) 252-7852; FAX: (630) 252-5986; e-mail: lusk@mcs.anl.gov * Mathematics and Computer Science Division Argonne National Laboratory, * Argonne IL 60439 * * GOVERNMENT LICENSE * * Portions of this material resulted from work developed under a U.S. * Government Contract and are subject to the following license: the * Government is granted for itself and others acting on its behalf a * paid-up, nonexclusive, irrevocable worldwide license in this computer * software to reproduce, prepare derivative works, and perform publicly * and display publicly. * * DISCLAIMER * * This computer code material was prepared, in part, as an account of work * sponsored by an agency of the United States Government. Neither the * United States, nor the University of Chicago, nor any of their * employees, makes any warranty express or implied, or assumes any legal * liability or responsibility for the accuracy, completeness, or * usefulness of any information, apparatus, product, or process disclosed, * or represents that its use would not infringe privately owned rights. * * MCS Division Argonne National Laboratory * University of Chicago ***************************************************************************** * COPYRIGHT: For the implementation of the functions * * Copyright (C) 2005-2007 The Regents of the University of California. * Copyright (C) 2008-2010 Lawrence Livermore National Security. * Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER). * Written by Morris Jette * CODE-OCEC-09-009. All rights reserved. * * This file is part of Slurm, a resource management program. * For details, see . * Please also read the included file: DISCLAIMER. * * Slurm is free software; you can redistribute it and/or modify it under * the terms of the GNU General Public License as published by the Free * Software Foundation; either version 2 of the License, or (at your option) * any later version. * * In addition, as a special exception, the copyright holders give permission * to link the code of portions of this program with the OpenSSL library under * certain conditions as described in each individual source file, and * distribute linked combinations including the two. You must obey the GNU * General Public License in all respects for all of the code used other than * OpenSSL. If you modify file(s) with this exception, you may extend this * exception to your version of the file(s), but you are not obligated to do * so. If you do not wish to do so, delete this exception statement from your * version. If you delete this exception statement from all source files in * the program, then also delete it here. * * Slurm is distributed in the hope that it will be useful, but WITHOUT ANY * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more * details. * * You should have received a copy of the GNU General Public License along * with Slurm; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. \*****************************************************************************/ #define _GNU_SOURCE #include #include #include #include #include #include "slurm/pmi.h" #include "slurm/slurm.h" #include "slurm/slurm_errno.h" #include "src/api/slurm_pmi.h" #include "src/common/macros.h" #include "src/slurmd/slurmstepd/slurmstepd_job.h" #define KVS_STATE_LOCAL 0 #define KVS_STATE_DEFUNCT 1 #define KVS_KEY_STATE_GLOBAL 0 #define KVS_KEY_STATE_LOCAL 1 #define KVS_KEY_STATE_DISABLED 2 /* default key names form is jobid.stepid[.taskid.sequence] */ struct kvs_rec { char * kvs_name; uint16_t kvs_state; /* see KVS_STATE_* */ uint32_t kvs_cnt; /* count of key-pairs */ uint16_t kvs_inx; /* iteration index */ uint16_t * kvs_key_states; /* see KVS_KEY_STATE_* */ char ** kvs_keys; char ** kvs_values; }; #define _DEBUG 0 #ifdef WITH_PMI_NOMEM_ERROR_FUNC # undef pmi_nomem_error extern void pmi_nomem_error(char *file, int line, char *mesg); #else /* !WITH_PMI_NOMEM_ERROR_FUNC */ # ifndef pmi_nomem_error static void pmi_nomem_error(char *file, int line, char *mesg) { fprintf(stderr, "ERROR: [%s:%d] %s: %s\n", file, line, mesg, strerror(errno)); abort(); } # endif /* !pmi_nomem_error */ #endif /* !WITH_PMI_NOMEM_ERROR_FUNC */ static void _del_kvs_rec( struct kvs_rec *kvs_ptr ); static void _init_kvs( char kvsname[] ); inline static void _kvs_dump(void); static int _kvs_put( const char kvsname[], const char key[], const char value[], int local); static void _kvs_swap(struct kvs_rec *kvs_ptr, int inx1, int inx2); static void _kvs_disable_local_keys(void); /* Global variables */ long pmi_jobid; long pmi_stepid; int pmi_init = 0; int pmi_size; int pmi_spawned; int pmi_rank; int pmi_debug; /* By default PMI protocol does not allow * for duplicate keys. */ static int pmi_kvs_no_dup_keys = 1; static pthread_mutex_t kvs_mutex = PTHREAD_MUTEX_INITIALIZER; int kvs_rec_cnt = 0; struct kvs_rec *kvs_recs; int kvs_name_sequence = 0; static char *pmi_opt_str = "pmi command line options \n" " \n" " \n" " \n"; static int IsPmiKey(char *); static void _pmi_mutex_lock(pthread_mutex_t *mutex) { if (pthread_mutex_lock(mutex) != 0) fprintf(stderr, "_pmi_mutex_lock\n"); } static void _pmi_mutex_unlock(pthread_mutex_t *mutex) { if (pthread_mutex_unlock(mutex) != 0) fprintf(stderr, "_pmi_mutex_unlock\n"); } /* PMI Group functions */ /*@ PMI_Init - initialize the Process Manager Interface Output Parameter: . spawned - spawned flag Return values: + PMI_SUCCESS - initialization completed successfully . PMI_ERR_INVALID_ARG - invalid argument - PMI_FAIL - initialization failed Notes: Initialize PMI for this process group. The value of spawned indicates whether this process was created by 'PMI_Spawn_multiple'. 'spawned' will be 'PMI_TRUE' if this process group has a parent and 'PMI_FALSE' if it does not. @*/ int PMI_Init( int *spawned ) { char *env; env = getenv("PMI_DEBUG"); if (env) pmi_debug = atoi(env); else pmi_debug = 0; if (pmi_debug) fprintf(stderr, "In: PMI_Init\n"); /* In MPI implementations, there will be no duplicate * keys put into the KVS usually. Hence the checking * for duplicate keys can be skipped. However if the * user wants to have duplicate keys he must set * this env variable. If a duplicate key is found * the previous value will be discarded. */ env = getenv("SLURM_PMI_KVS_DUP_KEYS"); if (env) pmi_kvs_no_dup_keys = 0; if (spawned == NULL) return PMI_ERR_INVALID_ARG; if (pmi_init) goto replay; env = getenv("SLURM_JOB_ID"); if (env) pmi_jobid = atoi(env); else pmi_jobid = 0; env = getenv("SLURM_STEPID"); if (env) pmi_stepid = atoi(env); else pmi_stepid = 0; env = getenv("PMI_SPAWNED"); if (env) pmi_spawned = atoi(env); else pmi_spawned = 0; env = getenv("SLURM_NPROCS"); if (!env) env = getenv("PMI_SIZE"); if (env) pmi_size = atoi(env); else pmi_size = 1; env = getenv("SLURM_PROCID"); if (!env) env = getenv("PMI_RANK"); if (env) pmi_rank = atoi(env); else pmi_rank = 0; pmi_init = 1; replay: if (pmi_spawned) *spawned = PMI_TRUE; else *spawned = PMI_FALSE; return PMI_SUCCESS; } /*@ PMI_Initialized - check if PMI has been initialized Output Parameter: . initialized - boolean value Return values: + PMI_SUCCESS - initialized successfully set . PMI_ERR_INVALID_ARG - invalid argument - PMI_FAIL - unable to set the variable Notes: On successful output, initialized will either be 'PMI_TRUE' or 'PMI_FALSE'. + PMI_TRUE - initialize has been called. - PMI_FALSE - initialize has not been called or previously failed. @*/ int PMI_Initialized( PMI_BOOL *initialized ) { if (pmi_debug) fprintf(stderr, "In: PMI_Initialized\n"); if (initialized == NULL) return PMI_ERR_INVALID_ARG; if (pmi_init) *initialized = PMI_TRUE; else *initialized = PMI_FALSE; return PMI_SUCCESS; } /*@ PMI_Finalize - finalize the Process Manager Interface Return values: + PMI_SUCCESS - finalization completed successfully - PMI_FAIL - finalization failed Notes: Finalize PMI for this process group. @*/ int PMI_Finalize( void ) { int i; if (pmi_debug) fprintf(stderr, "In: PMI_Finalize\n"); pmi_init = 0; _pmi_mutex_lock(&kvs_mutex); /* DO NOT use slurm_mutex_un/lock */ for (i=0; ikvs_cnt; i++) { if (kvs_ptr->kvs_keys[i]) free(kvs_ptr->kvs_keys[i]); if (kvs_ptr->kvs_values[i]) free(kvs_ptr->kvs_values[i]); } if (kvs_ptr->kvs_name) free(kvs_ptr->kvs_name); return; } /*@ PMI_Get_size - obtain the size of the process group Output Parameters: . size - pointer to an integer that receives the size of the process group Return values: + PMI_SUCCESS - size successfully obtained . PMI_ERR_INVALID_ARG - invalid argument - PMI_FAIL - unable to return the size Notes: This function returns the size of the process group to which the local process belongs. @*/ int PMI_Get_size( int *size ) { if (pmi_debug) fprintf(stderr, "In: PMI_Get_size\n"); if (size == NULL) return PMI_ERR_INVALID_ARG; if (pmi_init == 0) return PMI_FAIL; *size = pmi_size; return PMI_SUCCESS; } /*@ PMI_Get_rank - obtain the rank of the local process in the process group Output Parameters: . rank - pointer to an integer that receives the rank in the process group Return values: + PMI_SUCCESS - rank successfully obtained . PMI_ERR_INVALID_ARG - invalid argument - PMI_FAIL - unable to return the rank Notes: This function returns the rank of the local process in its process group. @*/ int PMI_Get_rank( int *rank ) { if (pmi_debug) fprintf(stderr, "In: PMI_Get_rank\n"); if (rank == NULL) return PMI_ERR_INVALID_ARG; if (pmi_init == 0) return PMI_FAIL; *rank = pmi_rank; return PMI_SUCCESS; } /*@ PMI_Get_universe_size - obtain the universe size (NOTE: "universe size" indicates the maximum recommended process count for the job.) Output Parameters: . size - pointer to an integer that receives the size Return values: + PMI_SUCCESS - size successfully obtained . PMI_ERR_INVALID_ARG - invalid argument - PMI_FAIL - unable to return the size @*/ int PMI_Get_universe_size( int *size ) { if (pmi_debug) fprintf(stderr, "In: PMI_Get_universe_size\n"); if (size == NULL) return PMI_ERR_INVALID_ARG; if (pmi_init == 0) return PMI_FAIL; *size = pmi_size; return PMI_SUCCESS; } /*@ PMI_Get_appnum - obtain the application number Output parameters: . appnum - pointer to an integer that receives the appnum Return values: + PMI_SUCCESS - appnum successfully obtained . PMI_ERR_INVALID_ARG - invalid argument - PMI_FAIL - unable to return the size @*/ int PMI_Get_appnum( int *appnum ) { if (pmi_debug) fprintf(stderr, "In: PMI_Get_appnum\n"); if (appnum == NULL) return PMI_ERR_INVALID_ARG; if (pmi_init == 0) return PMI_FAIL; *appnum = pmi_jobid; return PMI_SUCCESS; } /*@ PMI_Publish_name - publish a name Input parameters: . service_name - string representing the service being published . port - string representing the port on which to contact the service Return values: + PMI_SUCCESS - port for service successfully published . PMI_ERR_INVALID_ARG - invalid argument - PMI_FAIL - unable to publish service @*/ int PMI_Publish_name( const char service_name[], const char port[] ) { if (pmi_debug) fprintf(stderr, "In: PMI_Publish_name - NOT SUPPORTED\n"); if ((service_name == NULL) || (port == NULL)) return PMI_ERR_INVALID_ARG; /* FIXME */ return PMI_FAIL; } /*@ PMI_Unpublish_name - unpublish a name Input parameters: . service_name - string representing the service being unpublished Return values: + PMI_SUCCESS - port for service successfully published . PMI_ERR_INVALID_ARG - invalid argument - PMI_FAIL - unable to unpublish service @*/ int PMI_Unpublish_name( const char service_name[] ) { if (pmi_debug) fprintf(stderr, "In: PMI_Unpublish_name - NOT SUPPORTED\n"); if (service_name == NULL) return PMI_ERR_INVALID_ARG; /* FIXME */ return PMI_FAIL; } /*@ PMI_Lookup_name - lookup a service by name Input parameters: . service_name - string representing the service being published Output parameters: . port - string representing the port on which to contact the service Return values: + PMI_SUCCESS - port for service successfully obtained . PMI_ERR_INVALID_ARG - invalid argument - PMI_FAIL - unable to lookup service @*/ int PMI_Lookup_name( const char service_name[], char port[] ) { if (pmi_debug) fprintf(stderr, "In: PMI_Lookup_name - NOT SUPPORTED\n"); if ((service_name == NULL) || (port == NULL)) return PMI_ERR_INVALID_ARG; /* FIXME */ return PMI_FAIL; } /*@ PMI_Get_id - obtain the id of the process group Input Parameter: . length - length of the id_str character array Output Parameter: . id_str - character array that receives the id of the process group Return values: + PMI_SUCCESS - id successfully obtained . PMI_ERR_INVALID_ARG - invalid id_str argument . PMI_ERR_INVALID_LENGTH - invalid length argument - PMI_FAIL - unable to return the id Notes: This function returns a string that uniquely identifies the process group that the local process belongs to. The string passed in must be at least as long as the number returned by 'PMI_Get_id_length_max()'. @*/ int PMI_Get_id( char id_str[], int length ) { if (pmi_debug) fprintf(stderr, "In: PMI_Get_id\n"); if (length < PMI_MAX_ID_LEN) return PMI_ERR_INVALID_LENGTH; if (id_str == NULL) return PMI_ERR_INVALID_ARG; if (pmi_init == 0) return PMI_FAIL; snprintf(id_str, length, "%ld.%ld", pmi_jobid, pmi_stepid); return PMI_SUCCESS; } /*@ PMI_Get_kvs_domain_id - obtain the id of the PMI domain Input Parameter: . length - length of id_str character array Output Parameter: . id_str - character array that receives the id of the PMI domain Return values: + PMI_SUCCESS - id successfully obtained . PMI_ERR_INVALID_ARG - invalid argument . PMI_ERR_INVALID_LENGTH - invalid length argument - PMI_FAIL - unable to return the id Notes: This function returns a string that uniquely identifies the PMI domain where keyval spaces can be shared. The string passed in must be at least as long as the number returned by 'PMI_Get_id_length_max()'. @*/ int PMI_Get_kvs_domain_id( char id_str[], int length ) { if (pmi_debug) fprintf(stderr, "In: PMI_Get_kvs_domain_id\n"); if (length < PMI_MAX_ID_LEN) return PMI_ERR_INVALID_LENGTH; if (id_str == NULL) return PMI_ERR_INVALID_ARG; if (pmi_init == 0) return PMI_FAIL; snprintf(id_str, length, "%ld.%ld", pmi_jobid, pmi_stepid); return PMI_SUCCESS; } /*@ PMI_Get_id_length_max - obtain the maximum length of an id string Output Parameters: . length - the maximum length of an id string Return values: + PMI_SUCCESS - length successfully set . PMI_ERR_INVALID_ARG - invalid argument - PMI_FAIL - unable to return the maximum length Notes: This function returns the maximum length of a process group id string. @*/ int PMI_Get_id_length_max( int *length ) { if (pmi_debug) fprintf(stderr, "In: PMI_Get_id_length_max\n"); if (length == NULL) return PMI_ERR_INVALID_ARG; *length = PMI_MAX_ID_LEN; return PMI_SUCCESS; } /*@ PMI_Barrier - barrier across the process group Return values: + PMI_SUCCESS - barrier successfully finished - PMI_FAIL - barrier failed Notes: This function is a collective call across all processes in the process group the local process belongs to. It will not return until all the processes have called 'PMI_Barrier()'. @*/ int PMI_Barrier( void ) { kvs_comm_set_t *kvs_set_ptr = NULL; struct kvs_comm *kvs_ptr; int i, j, k, rc = PMI_SUCCESS; if (pmi_debug) fprintf(stderr, "In: PMI_Barrier\n"); if (pmi_init == 0) return PMI_FAIL; /* Simple operation without srun (no-op) */ if ((pmi_jobid == 0) && (pmi_stepid == 0)) return rc; /* Issue the RPC */ if (slurm_get_kvs_comm_set(&kvs_set_ptr, pmi_rank, pmi_size) != SLURM_SUCCESS) return PMI_FAIL; if (kvs_set_ptr == NULL) return PMI_SUCCESS; if (pmi_debug) fprintf(stderr, "Past PMI_Barrier\n"); _kvs_disable_local_keys(); for (i=0; ikvs_comm_recs; i++) { kvs_ptr = kvs_set_ptr->kvs_comm_ptr[i]; for (j=0; jkvs_cnt; j++) { k = _kvs_put(kvs_ptr->kvs_name, kvs_ptr->kvs_keys[j], kvs_ptr->kvs_values[j], 0); if (k != PMI_SUCCESS) rc = k; } } /* Release temporary storage from RPC */ slurm_free_kvs_comm_set(kvs_set_ptr); return rc; } /*@ PMI_Get_clique_size - obtain the number of processes on the local node Output Parameters: . size - pointer to an integer that receives the size of the clique Return values: + PMI_SUCCESS - size successfully obtained . PMI_ERR_INVALID_ARG - invalid argument - PMI_FAIL - unable to return the clique size Notes: This function returns the number of processes in the local process group that are on the local node along with the local process. This is a simple topology function to distinguish between processes that can communicate through IPC mechanisms (e.g., shared memory) and other network mechanisms. @*/ int PMI_Get_clique_size( int *size ) { char *env; if (pmi_debug) fprintf(stderr, "In: PMI_Get_clique_size\n"); if (size == NULL) return PMI_ERR_INVALID_ARG; if (pmi_init == 0) return PMI_FAIL; /* Simple operation without srun */ if ((pmi_jobid == 0) && (pmi_stepid == 0)) { *size = 1; return PMI_SUCCESS; } env = getenv("SLURM_GTIDS"); if (env) { int i, tids=1; for (i=0; env[i]; i++) { if (env[i] == ',') tids++; } *size = tids; return PMI_SUCCESS; } return PMI_FAIL; } /*@ PMI_Get_clique_ranks - get the ranks of the local processes in the process group Input Parameters: . length - length of the ranks array Output Parameters: . ranks - pointer to an array of integers that receive the local ranks Return values: + PMI_SUCCESS - ranks successfully obtained . PMI_ERR_INVALID_ARG - invalid argument . PMI_ERR_INVALID_LENGTH - invalid length argument - PMI_FAIL - unable to return the ranks Notes: This function returns the ranks of the processes on the local node. The array must be at least as large as the size returned by 'PMI_Get_clique_size()'. This is a simple topology function to distinguish between processes that can communicate through IPC mechanisms (e.g., shared memory) and other network mechanisms. @*/ int PMI_Get_clique_ranks( int ranks[], int length ) { char *env; if (pmi_debug) fprintf(stderr, "In: PMI_Get_clique_ranks\n"); if (ranks == NULL) return PMI_ERR_INVALID_ARG; if (pmi_init == 0) return PMI_FAIL; /* Simple operation without srun */ if ((pmi_jobid == 0) && (pmi_stepid == 0)) { if (length < 1) return PMI_ERR_INVALID_LENGTH; ranks[0] = 0; return PMI_SUCCESS; } env = getenv("SLURM_GTIDS"); if (env) { int i = 0; char *tid, *tids, *last = NULL; tids = strdup(env); tid = strtok_r(tids, ",", &last); while (tid) { if (i >= length) { free(tids); return PMI_ERR_INVALID_LENGTH; } ranks[i++] = atoi(tid); tid = strtok_r(NULL, ",", &last); } free(tids); return PMI_SUCCESS; } return PMI_FAIL; } /*@ PMI_Abort - abort the process group associated with this process Input Parameters: + exit_code - exit code to be returned by this process - error_msg - error message to be printed Return values: . none - this function should not return @*/ int PMI_Abort(int exit_code, const char error_msg[]) { if ((pmi_debug) || (error_msg != NULL)) { if (error_msg == NULL) error_msg = "NULL"; fprintf(stderr, "In: PMI_Abort(%d, %s)\n", exit_code, error_msg); } if (pmi_init) { if ((pmi_jobid == 0) && (pmi_stepid == 0)) { /* Simple operation without srun */ kill(0, SIGKILL); } else { slurm_kill_job_step((uint32_t) pmi_jobid, (uint32_t) pmi_stepid, SIGKILL); } } exit(exit_code); } /* PMI Keymap functions */ /*@ PMI_KVS_Get_my_name - obtain the name of the keyval space the local process group has access to Input Parameters: . length - length of the kvsname character array Output Parameters: . kvsname - a string that receives the keyval space name Return values: + PMI_SUCCESS - kvsname successfully obtained . PMI_ERR_INVALID_ARG - invalid argument . PMI_ERR_INVALID_LENGTH - invalid length argument - PMI_FAIL - unable to return the kvsname Notes: This function returns the name of the keyval space that this process and all other processes in the process group have access to. The output parameter, kvsname, must be at least as long as the value returned by 'PMI_KVS_Get_name_length_max()'. @*/ int PMI_KVS_Get_my_name( char kvsname[], int length ) { int size; if (pmi_debug) fprintf(stderr, "In: PMI_KVS_Get_my_name\n"); if (kvsname == NULL) return PMI_ERR_INVALID_ARG; if (pmi_init == 0) return PMI_FAIL; size = snprintf(kvsname, length, "%ld.%ld", pmi_jobid, pmi_stepid); if (size >= length) /* truncated */ return PMI_ERR_INVALID_LENGTH; _pmi_mutex_lock(&kvs_mutex); /* DO NOT use slurm_mutex_un/lock */ _init_kvs(kvsname); _pmi_mutex_unlock(&kvs_mutex); /* DO NOT use slurm_mutex_un/lock */ return PMI_SUCCESS; } static void _init_kvs( char kvsname[] ) { int i; i = kvs_rec_cnt; kvs_rec_cnt++; kvs_recs = realloc(kvs_recs, (sizeof(struct kvs_rec) * kvs_rec_cnt)); if (!kvs_recs) pmi_nomem_error(__FILE__, __LINE__, "_init_kvs"); /* DO NOT CHANGE TO STRNDUP(), NOT SUPPORTED ON AIX */ kvs_recs[i].kvs_name = malloc(PMI_MAX_KVSNAME_LEN); if (!kvs_recs[i].kvs_name) pmi_nomem_error(__FILE__, __LINE__, "_init_kvs"); strncpy(kvs_recs[i].kvs_name, kvsname, PMI_MAX_KVSNAME_LEN); kvs_recs[i].kvs_state = KVS_STATE_LOCAL; kvs_recs[i].kvs_cnt = 0; kvs_recs[i].kvs_inx = 0; kvs_recs[i].kvs_key_states = NULL; kvs_recs[i].kvs_keys = NULL; kvs_recs[i].kvs_values = NULL; } /*@ PMI_KVS_Get_name_length_max - obtain the length necessary to store a kvsname Output Parameter: . length - maximum length required to hold a keyval space name Return values: + PMI_SUCCESS - length successfully set . PMI_ERR_INVALID_ARG - invalid argument - PMI_FAIL - unable to set the length Notes: This function returns the string length required to store a keyval space name. A routine is used rather than setting a maximum value in 'pmi.h' to allow different implementations of PMI to be used with the same executable. These different implementations may allow different maximum lengths; by using a routine here, we can interface with a variety of implementations of PMI. @*/ int PMI_KVS_Get_name_length_max( int *length ) { if (pmi_debug) fprintf(stderr, "In: PMI_KVS_Get_name_length_max\n"); if (length == NULL) return PMI_ERR_INVALID_ARG; *length = PMI_MAX_KVSNAME_LEN; return PMI_SUCCESS; } /*@ PMI_KVS_Get_key_length_max - obtain the length necessary to store a key Output Parameter: . length - maximum length required to hold a key string. Return values: + PMI_SUCCESS - length successfully set . PMI_ERR_INVALID_ARG - invalid argument - PMI_FAIL - unable to set the length Notes: This function returns the string length required to store a key. @*/ int PMI_KVS_Get_key_length_max( int *length ) { if (pmi_debug) fprintf(stderr, "In: PMI_KVS_Get_key_length_max\n"); if (length == NULL) return PMI_ERR_INVALID_ARG; *length = PMI_MAX_KEY_LEN; return PMI_SUCCESS; } /*@ PMI_KVS_Get_value_length_max - obtain the length necessary to store a value Output Parameter: . length - maximum length required to hold a keyval space value Return values: + PMI_SUCCESS - length successfully set . PMI_ERR_INVALID_ARG - invalid argument - PMI_FAIL - unable to set the length Notes: This function returns the string length required to store a value from a keyval space. @*/ int PMI_KVS_Get_value_length_max( int *length ) { if (pmi_debug) fprintf(stderr, "In: PMI_KVS_Get_value_length_max\n"); if (length == NULL) return PMI_ERR_INVALID_ARG; *length = PMI_MAX_VAL_LEN; return PMI_SUCCESS; } /*@ PMI_KVS_Create - create a new keyval space Input Parameter: . length - length of the kvsname character array Output Parameters: . kvsname - a string that receives the keyval space name Return values: + PMI_SUCCESS - keyval space successfully created . PMI_ERR_INVALID_ARG - invalid argument . PMI_ERR_INVALID_LENGTH - invalid length argument - PMI_FAIL - unable to create a new keyval space Notes: This function creates a new keyval space. Everyone in the same process group can access this keyval space by the name returned by this function. The function is not collective. Only one process calls this function. The output parameter, kvsname, must be at least as long as the value returned by 'PMI_KVS_Get_name_length_max()'. @*/ int PMI_KVS_Create( char kvsname[], int length ) { int size, rc; if (pmi_debug) fprintf(stderr, "In: PMI_KVS_Create\n"); if (kvsname == NULL) return PMI_ERR_INVALID_ARG; if (pmi_init == 0) return PMI_FAIL; _pmi_mutex_lock(&kvs_mutex); /* DO NOT use slurm_mutex_un/lock */ size = snprintf(kvsname, length, "%ld.%ld.%d.%d", pmi_jobid, pmi_stepid, pmi_rank, kvs_name_sequence); if (size >= length) /* truncated */ rc = PMI_ERR_INVALID_LENGTH; else { kvs_name_sequence++; _init_kvs(kvsname); rc = PMI_SUCCESS; } _pmi_mutex_unlock(&kvs_mutex); /* DO NOT use slurm_mutex_un/lock */ return rc; } /*@ PMI_KVS_Destroy - destroy keyval space Input Parameters: . kvsname - keyval space name Return values: + PMI_SUCCESS - keyval space successfully destroyed . PMI_ERR_INVALID_ARG - invalid argument - PMI_FAIL - unable to destroy the keyval space Notes: This function destroys a keyval space created by 'PMI_KVS_Create()'. @*/ int PMI_KVS_Destroy( const char kvsname[] ) { int i, found = 0; if (pmi_debug) fprintf(stderr, "In: PMI_KVS_Destroy - NOT FULLY SUPPORTED\n"); if (kvsname == NULL) return PMI_ERR_INVALID_ARG; _pmi_mutex_lock(&kvs_mutex); /* DO NOT use slurm_mutex_un/lock */ for (i=0; i PMI_MAX_KVSNAME_LEN)) return PMI_ERR_INVALID_KVS; if ((key == NULL) || (strlen(key) >PMI_MAX_KEY_LEN)) return PMI_ERR_INVALID_KEY; if ((value == NULL) || (strlen(value) > PMI_MAX_VAL_LEN)) return PMI_ERR_INVALID_VAL; return _kvs_put(kvsname, key, value, 1); } static int _kvs_put( const char kvsname[], const char key[], const char value[], int local) { int i, j, rc; /* find the proper kvs record */ _pmi_mutex_lock(&kvs_mutex); /* DO NOT use slurm_mutex_un/lock */ for (i=0; i PMI_MAX_KVSNAME_LEN)) return PMI_ERR_INVALID_ARG; if (pmi_init == 0) return PMI_FAIL; /* Simple operation without srun (no-op) */ if ((pmi_jobid == 0) && (pmi_stepid == 0)) return rc; /* Pack records into RPC for sending to slurmd_step * NOTE: For performance reasons, we only send key-pairs * which have been locally set rather than the full key-pair * space. We do this by moving the local key-pairs to the * head of the list and sending the count of local entries * rather than the full set. */ kvs_set.host_cnt = 1; kvs_set.kvs_host_ptr = malloc(sizeof(struct kvs_hosts)); if (!kvs_set.kvs_host_ptr) { pmi_nomem_error(__FILE__, __LINE__, "PMI_KVS_Commit"); return PMI_FAIL; /* Fix CLANG false positive */ } kvs_set.kvs_host_ptr->task_id = pmi_rank; kvs_set.kvs_host_ptr->port = 0; kvs_set.kvs_host_ptr->hostname = NULL; kvs_set.kvs_comm_recs = 0; kvs_set.kvs_comm_ptr = NULL; _pmi_mutex_lock(&kvs_mutex); /* DO NOT use slurm_mutex_un/lock */ for (i = 0; i < kvs_rec_cnt; i++) { if (kvs_recs[i].kvs_state == KVS_STATE_DEFUNCT) continue; local_pairs = 0; for (j = 0; j < kvs_recs[i].kvs_cnt; j++) { if (kvs_recs[i].kvs_key_states[j] == KVS_KEY_STATE_GLOBAL) continue; if (local_pairs != j) _kvs_swap(&kvs_recs[i], j, local_pairs); local_pairs++; } if (local_pairs == 0) continue; kvs_set.kvs_comm_ptr = realloc(kvs_set.kvs_comm_ptr, (sizeof(struct kvs_comm *) * (kvs_set.kvs_comm_recs+1))); if (!kvs_set.kvs_comm_ptr) { pmi_nomem_error(__FILE__, __LINE__, "PMI_KVS_Commit"); return PMI_FAIL; /* Fix CLANG false positive */ } kvs_set.kvs_comm_ptr[kvs_set.kvs_comm_recs] = malloc(sizeof(struct kvs_comm)); if (!kvs_set.kvs_comm_ptr[kvs_set.kvs_comm_recs]) { pmi_nomem_error(__FILE__, __LINE__, "PMI_KVS_Commit"); return PMI_FAIL; /* Fix CLANG false positive */ } kvs_set.kvs_comm_ptr[kvs_set.kvs_comm_recs]->kvs_name = kvs_recs[i].kvs_name; kvs_set.kvs_comm_ptr[kvs_set.kvs_comm_recs]->kvs_cnt = local_pairs; kvs_set.kvs_comm_ptr[kvs_set.kvs_comm_recs]->kvs_keys = kvs_recs[i].kvs_keys; kvs_set.kvs_comm_ptr[kvs_set.kvs_comm_recs]->kvs_values = kvs_recs[i].kvs_values; kvs_set.kvs_comm_recs++; } /* Send the RPC */ if (slurm_send_kvs_comm_set(&kvs_set, pmi_rank, pmi_size) != SLURM_SUCCESS) { rc = PMI_FAIL; } _pmi_mutex_unlock(&kvs_mutex); /* DO NOT use slurm_mutex_un/lock */ /* Free any temporary storage */ free(kvs_set.kvs_host_ptr); for (i = 0; i < kvs_set.kvs_comm_recs; i++) free(kvs_set.kvs_comm_ptr[i]); if (kvs_set.kvs_comm_ptr) free(kvs_set.kvs_comm_ptr); return rc; } static void _kvs_swap(struct kvs_rec *kvs_ptr, int inx1, int inx2) { char *tmp_char; uint16_t tmp_16; tmp_16 = kvs_ptr->kvs_key_states[inx1]; kvs_ptr->kvs_key_states[inx1] = kvs_ptr->kvs_key_states[inx2]; kvs_ptr->kvs_key_states[inx2] = tmp_16; tmp_char = kvs_ptr->kvs_keys[inx1]; kvs_ptr->kvs_keys[inx1] = kvs_ptr->kvs_keys[inx2]; kvs_ptr->kvs_keys[inx2] = tmp_char; tmp_char = kvs_ptr->kvs_values[inx1]; kvs_ptr->kvs_values[inx1] = kvs_ptr->kvs_values[inx2]; kvs_ptr->kvs_values[inx2] = tmp_char; } /*@ PMI_KVS_Get - get a key/value pair from a keyval space Input Parameters: + kvsname - keyval space name . key - key - length - length of value character array Output Parameters: . value - value Return values: + PMI_SUCCESS - get succeeded . PMI_ERR_INVALID_KVS - invalid kvsname argument . PMI_ERR_INVALID_KEY - invalid key argument . PMI_ERR_INVALID_VAL - invalid val argument . PMI_ERR_INVALID_LENGTH - invalid length argument - PMI_FAIL - get failed Notes: This function gets the value of the specified key in the keyval space. @*/ int PMI_KVS_Get( const char kvsname[], const char key[], char value[], int length) { int i, j, rc; if (pmi_debug) fprintf(stderr, "In: PMI_KVS_Get(%s)\n", key); if ((kvsname == NULL) || (strlen(kvsname) > PMI_MAX_KVSNAME_LEN)) return PMI_ERR_INVALID_KVS; if ((key == NULL) || (strlen(key) >PMI_MAX_KEY_LEN)) return PMI_ERR_INVALID_KEY; if (value == NULL) return PMI_ERR_INVALID_VAL; /* find the proper kvs record */ _pmi_mutex_lock(&kvs_mutex); /* DO NOT use slurm_mutex_un/lock */ for (i = 0; i < kvs_rec_cnt; i++) { if (kvs_recs[i].kvs_state == KVS_STATE_DEFUNCT) continue; if (strncmp(kvs_recs[i].kvs_name, kvsname, PMI_MAX_KVSNAME_LEN)) continue; for (j=0; j (length-1)) rc = PMI_ERR_INVALID_LENGTH; else { strncpy(value, kvs_recs[i].kvs_values[j], length); rc = PMI_SUCCESS; } goto fini; } rc = PMI_ERR_INVALID_KEY; goto fini; } rc = PMI_ERR_INVALID_KVS; fini: _pmi_mutex_unlock(&kvs_mutex); /* DO NOT use slurm_mutex_un/lock */ return rc; } /*@ PMI_KVS_Iter_first - initialize the iterator and get the first value Input Parameters: + kvsname - keyval space name . key_len - length of key character array - val_len - length of val character array Output Parameters: + key - key - value - value Return values: + PMI_SUCCESS - keyval pair successfully retrieved from the keyval space . PMI_ERR_INVALID_KVS - invalid kvsname argument . PMI_ERR_INVALID_KEY - invalid key argument . PMI_ERR_INVALID_KEY_LENGTH - invalid key length argument . PMI_ERR_INVALID_VAL - invalid val argument . PMI_ERR_INVALID_VAL_LENGTH - invalid val length argument - PMI_FAIL - failed to initialize the iterator and get the first keyval pair Notes: This function initializes the iterator for the specified keyval space and retrieves the first key/val pair. The end of the keyval space is specified by returning an empty key string. key and val must be at least as long as the values returned by 'PMI_KVS_Get_key_length_max()' and 'PMI_KVS_Get_value_length_max()'. @*/ int PMI_KVS_Iter_first(const char kvsname[], char key[], int key_len, char val[], int val_len) { int i, rc; int j; if (pmi_debug) fprintf(stderr, "In: PMI_KVS_Iter_first\n"); if ((kvsname == NULL) || (strlen(kvsname) > PMI_MAX_KVSNAME_LEN)) return PMI_ERR_INVALID_KVS; if (key == NULL) return PMI_ERR_INVALID_KEY; if (val == NULL) return PMI_ERR_INVALID_VAL; key[0] = '\0'; val[0] = '\0'; /* find the proper kvs record */ _pmi_mutex_lock(&kvs_mutex); /* DO NOT use slurm_mutex_un/lock */ for (i = 0; i < kvs_rec_cnt; i++) { if (kvs_recs[i].kvs_state == KVS_STATE_DEFUNCT) continue; if (strncmp(kvs_recs[i].kvs_name, kvsname, PMI_MAX_KVSNAME_LEN)) continue; kvs_recs[i].kvs_inx = 0; if (kvs_recs[i].kvs_inx >= kvs_recs[i].kvs_cnt) { rc = PMI_SUCCESS; goto fini; } for (j = 0; i < kvs_recs[i].kvs_cnt; j++) { if (kvs_recs[i].kvs_key_states[j] == KVS_KEY_STATE_DISABLED) continue; strncpy(key, kvs_recs[i].kvs_keys[j], key_len); strncpy(val, kvs_recs[i].kvs_values[j], val_len); kvs_recs[i].kvs_inx = j; rc = PMI_SUCCESS; goto fini; } } rc = PMI_ERR_INVALID_KVS; fini: _pmi_mutex_unlock(&kvs_mutex); /* DO NOT use slurm_mutex_un/lock */ return rc; } /*@ PMI_KVS_Iter_next - get the next keyval pair from the keyval space Input Parameters: + kvsname - keyval space name . key_len - length of key character array - val_len - length of val character array Output Parameters: + key - key - value - value Return values: + PMI_SUCCESS - keyval pair successfully retrieved from the keyval space . PMI_ERR_INVALID_KVS - invalid kvsname argument . PMI_ERR_INVALID_KEY - invalid key argument . PMI_ERR_INVALID_KEY_LENGTH - invalid key length argument . PMI_ERR_INVALID_VAL - invalid val argument . PMI_ERR_INVALID_VAL_LENGTH - invalid val length argument - PMI_FAIL - failed to get the next keyval pair Notes: This function retrieves the next keyval pair from the specified keyval space. 'PMI_KVS_Iter_first()' must have been previously called. The end of the keyval space is specified by returning an empty key string. The output parameters, key and val, must be at least as long as the values returned by 'PMI_KVS_Get_key_length_max()' and 'PMI_KVS_Get_value_length_max()'. @*/ int PMI_KVS_Iter_next(const char kvsname[], char key[], int key_len, char val[], int val_len) { int i; int rc; int j; if (pmi_debug) fprintf(stderr, "In: PMI_KVS_Iter_next\n"); if ((kvsname == NULL) || (strlen(kvsname) > PMI_MAX_KVSNAME_LEN)) return PMI_ERR_INVALID_KVS; if (key == NULL) return PMI_ERR_INVALID_KEY; if (val == NULL) return PMI_ERR_INVALID_VAL; key[0] = '\0'; val[0] = '\0'; /* find the proper kvs record */ _pmi_mutex_lock(&kvs_mutex); /* DO NOT use slurm_mutex_un/lock */ for (i = 0; i < kvs_rec_cnt; i++) { if (kvs_recs[i].kvs_state == KVS_STATE_DEFUNCT) continue; if (strncmp(kvs_recs[i].kvs_name, kvsname, PMI_MAX_KVSNAME_LEN)) continue; kvs_recs[i].kvs_inx++; if (kvs_recs[i].kvs_inx >= kvs_recs[i].kvs_cnt) { rc = PMI_SUCCESS; goto fini; } for (j = kvs_recs[i].kvs_inx; j < kvs_recs[i].kvs_cnt; j++) { if (kvs_recs[i].kvs_key_states[j] == KVS_KEY_STATE_DISABLED) continue; strncpy(key, kvs_recs[i].kvs_keys[j], key_len); strncpy(val, kvs_recs[i].kvs_values[j], val_len); kvs_recs[i].kvs_inx = j; rc = PMI_SUCCESS; goto fini; } } rc = PMI_ERR_INVALID_KVS; fini: _pmi_mutex_unlock(&kvs_mutex); /* DO NOT use slurm_mutex_un/lock */ return rc; } /* PMI Process Creation functions */ /*@ PMI_Spawn_multiple - spawn a new set of processes Input Parameters: + count - count of commands . cmds - array of command strings . argvs - array of argv arrays for each command string . maxprocs - array of maximum processes to spawn for each command string . info_keyval_sizes - array giving the number of elements in each of the 'info_keyval_vectors' . info_keyval_vectors - array of keyval vector arrays . preput_keyval_size - Number of elements in 'preput_keyval_vector' - preput_keyval_vector - array of keyvals to be pre-put in the spawned keyval space Output Parameter: . errors - array of errors for each command Return values: + PMI_SUCCESS - spawn successful . PMI_ERR_INVALID_ARG - invalid argument - PMI_FAIL - spawn failed Notes: This function spawns a set of processes into a new process group. The 'count' field refers to the size of the array parameters - 'cmd', 'argvs', 'maxprocs', 'info_keyval_sizes' and 'info_keyval_vectors'. The 'preput_keyval_size' refers to the size of the 'preput_keyval_vector' array. The 'preput_keyval_vector' contains keyval pairs that will be put in the keyval space of the newly created process group before the processes are started. The 'maxprocs' array specifies the desired number of processes to create for each 'cmd' string. The actual number of processes may be less than the numbers specified in maxprocs. The acceptable number of processes spawned may be controlled by ``soft'' keyvals in the info arrays. The ``soft'' option is specified by mpiexec in the MPI-2 standard. Environment variables may be passed to the spawned processes through PMI implementation specific 'info_keyval' parameters. @*/ int PMI_Spawn_multiple(int count, const char * cmds[], const char ** argvs[], const int maxprocs[], const int info_keyval_sizesp[], const PMI_keyval_t * info_keyval_vectors[], int preput_keyval_size, const PMI_keyval_t preput_keyval_vector[], int errors[]) { if (pmi_debug) fprintf(stderr, "In: PMI_Spawn_multiple - NOT SUPPORTED\n"); if (cmds == NULL) return PMI_ERR_INVALID_ARG; /* FIXME */ return PMI_FAIL; } /*@ PMI_Parse_option - create keyval structures from a single command line argument Input Parameters: + num_args - length of args array - args - array of command line arguments starting with the argument to be parsed Output Parameters: + num_parsed - number of elements of the argument array parsed . keyvalp - pointer to an array of keyvals - size - size of the allocated array Return values: + PMI_SUCCESS - success . PMI_ERR_INVALID_NUM_ARGS - invalid number of arguments . PMI_ERR_INVALID_ARGS - invalid args argument . PMI_ERR_INVALID_NUM_PARSED - invalid num_parsed length argument . PMI_ERR_INVALID_KEYVALP - invalid keyvalp argument . PMI_ERR_INVALID_SIZE - invalid size argument - PMI_FAIL - fail Notes: This function removes one PMI specific argument from the command line and creates the corresponding 'PMI_keyval_t' structure for it. It returns an array and size to the caller. The array must be freed by 'PMI_Free_keyvals()'. If the first element of the args array is not a PMI specific argument, the function returns success and sets num_parsed to zero. If there are multiple PMI specific arguments in the args array, this function may parse more than one argument as long as the options are contiguous in the args array. @*/ int PMI_Parse_option(int num_args, char *args[], int *num_parsed, PMI_keyval_t **keyvalp, int *size) { int i, n, s, len; char *cp, *kp, *vp; PMI_keyval_t *temp; if (pmi_debug) fprintf(stderr, "In: PMI_Parse_option - \n"); if (num_parsed == NULL) return PMI_ERR_INVALID_NUM_PARSED; if (keyvalp == NULL) return PMI_ERR_INVALID_KEYVALP; if (size == NULL) return PMI_ERR_INVALID_SIZE; i = 0; n = 0; s = 0; temp = (PMI_keyval_t *) malloc(num_args * (sizeof (PMI_keyval_t))); if (temp == NULL) { pmi_nomem_error(__FILE__, __LINE__, "PMI_Parse_option"); return PMI_FAIL; } cp = args[0]; while (i < num_args) { while (*cp == ' ') cp++; n++; // number of array elements processed kp = cp; // keyword start here while (*cp != ' ' && *cp != '=' && *cp != '\n' && *cp != '\0') cp++; if (*cp != '=') { n++; break; } len = cp - kp; temp[s].key = (char *) malloc((len+1) * sizeof (char)); if (temp[s].key == NULL) { pmi_nomem_error(__FILE__, __LINE__, "PMI_Parse_option"); temp[s].val = NULL; PMI_Free_keyvals(temp, s); return PMI_FAIL; } strncpy(temp[s].key, kp, len); temp[s].key[len] = '\0'; if (!IsPmiKey(temp[s].key)) { free(temp[s].key); temp[s].key = NULL; break; } vp = ++cp; while (*cp != ' ' && *cp != '\n' && *cp != '\0') cp++; len = cp - vp + 1; temp[s].val = (char *) malloc((len+1) * sizeof (char)); if (temp[s].val == NULL) { pmi_nomem_error(__FILE__, __LINE__, "PMI_Parse_option"); PMI_Free_keyvals(temp, s+1); return PMI_FAIL; } strncpy(temp[s].val, vp, len); temp[s].val[len] = '\0'; s++; i++; // try next args cp = args[i]; } if (s == 0) { free(temp); temp = NULL; } *keyvalp = temp; *num_parsed = n; *size = s; return PMI_SUCCESS; } /*@ PMI_Args_to_keyval - create keyval structures from command line arguments Input Parameters: + argcp - pointer to argc - argvp - pointer to argv Output Parameters: + keyvalp - pointer to an array of keyvals - size - size of the allocated array Return values: + PMI_SUCCESS - success . PMI_ERR_INVALID_ARG - invalid argument - PMI_FAIL - fail Notes: This function removes PMI specific arguments from the command line and creates the corresponding 'PMI_keyval_t' structures for them. It returns an array and size to the caller that can then be passed to 'PMI_Spawn_multiple()'. The array can be freed by 'PMI_Free_keyvals()'. The routine 'free()' should not be used to free this array as there is no requirement that the array be allocated with 'malloc()'. @*/ /* Assume it is the standard c input argument format, i.e., argcp points to number of arguments argvp points to the number of array of arguments, with argv[0] is the cmd argv[1], argv[2]... are the keyword/argument pair. */ int PMI_Args_to_keyval(int *argcp, char *((*argvp)[]), PMI_keyval_t **keyvalp, int *size) { int i, j, cnt; PMI_keyval_t *temp; char **argv; if (pmi_debug) fprintf(stderr, "In: PMI_Args_to_keyval \n"); if ((keyvalp == NULL) || (size == NULL) || (argcp == NULL) || (argvp == NULL)) return PMI_ERR_INVALID_ARG; cnt = *argcp; argv = *argvp; if (cnt == 0) return PMI_ERR_INVALID_ARG; temp = (PMI_keyval_t *) malloc(cnt * (sizeof (PMI_keyval_t))); if (temp == NULL) { pmi_nomem_error(__FILE__, __LINE__, "PMI_Args_to_keyval"); return PMI_FAIL; } j = 0; i = 0; if (argv[i][0] != '-') { temp[j].val = (char *) malloc((strlen(argv[i])+1) * sizeof (char)); if (temp[j].val == NULL) { pmi_nomem_error(__FILE__, __LINE__, "PMI_Args_to_keyval"); temp[j].key = NULL; PMI_Free_keyvals(temp, j); return PMI_FAIL; } strcpy(temp[j].val, argv[i]); temp[i].key=NULL; --cnt; ++j; ++i; } while (cnt) { if (argv[i][0] == '-') { temp[j].key = (char *) malloc((strlen(argv[i])+1) * sizeof (char)); if (temp[j].key == NULL) { pmi_nomem_error(__FILE__, __LINE__, "PMI_Args_to_keyval"); temp[j].val = NULL; PMI_Free_keyvals(temp, j); return PMI_FAIL; } strcpy(temp[j].key, argv[i]); ++i; --cnt; if ((cnt) && (argv[i][0] != '-')){ temp[j].val = (char *) malloc( (strlen(argv[i])+1) * sizeof (char)); if (temp[j].val == NULL) { pmi_nomem_error(__FILE__, __LINE__, "PMI_Args_to_keyval"); PMI_Free_keyvals(temp, j+1); return PMI_FAIL; } strcpy(temp[j].val, argv[i]); i++; --cnt; } else { temp[j].val = NULL; } j++; } else { PMI_Free_keyvals(temp, j); return PMI_ERR_INVALID_ARG; } } *size = j; *keyvalp = temp; return PMI_SUCCESS; } /*@ PMI_Free_keyvals - free the keyval structures created by PMI_Args_to_keyval Input Parameters: + keyvalp - array of keyvals - size - size of the array Return values: + PMI_SUCCESS - success . PMI_ERR_INVALID_ARG - invalid argument - PMI_FAIL - fail Notes: This function frees the data returned by 'PMI_Args_to_keyval' and 'PMI_Parse_option'. Using this routine instead of 'free' allows the PMI package to track allocation of storage or to use interal storage as it sees fit. @*/ int PMI_Free_keyvals(PMI_keyval_t keyvalp[], int size) { int i; if (pmi_debug) fprintf(stderr, "In: PMI_Free_keyvals \n"); if (((keyvalp == NULL) && size) || (size < 0)) return PMI_ERR_INVALID_ARG; if (size == 0) { if (keyvalp != NULL) free(keyvalp); return PMI_SUCCESS; } for (i=0; i 4)) { return 1; } /* add code to test special key if needed */ return 0; } inline static void _kvs_dump(void) { #if _DEBUG int i, j; for (i=0; i