288 строки
8.7 KiB
C
288 строки
8.7 KiB
C
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/*
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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) 2004-2005 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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* $COPYRIGHT$
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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 "ompi_config.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include "mpi.h"
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#include "mca/mca.h"
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#include "mca/coll/coll.h"
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#include "request/request.h"
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#include "mca/pml/pml.h"
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/* need to include our own topo prototypes so we can malloc data on the comm correctly */
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#include "coll_tuned_topo.h"
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/* also need the dynamic rule structures */
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#include "coll_tuned_dynamic_rules.h"
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/* and our own prototypes */
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#include "coll_tuned_dynamic_file.h"
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#define MYEOF -999
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static void skiptonewline (FILE *fptr); /* local function */
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static int getnext (FILE *fptr); /* local function */
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static int fileline=0; /* used for verbose error messages */
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/*
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* Reads a rule file called fname
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* Builds the algorithm rule table for a max of n_collectives
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*
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* If an error occurs it removes rule table and then exits with a very verbose
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* error message (this stops the user using a half baked rule table
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*
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* Returns the number of actual collectives that a rule exists for
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* (note 0 is NOT an error)
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*
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*/
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int coll_tuned_read_rules_config_file (char *fname, ompi_coll_alg_rule_t** rules, int n_collectives)
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{
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FILE *fptr = (FILE*) NULL;
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int X;
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int CI;
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int NCS;
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int CS;
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int NMS;
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int MS, ALG, SS;
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int x, ci, ncs, cs, nms;
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int i;
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ompi_coll_alg_rule_t *alg_rules = (ompi_coll_alg_rule_t*) NULL; /* complete table of rules */
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/* individual pointers to sections of rules */
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ompi_coll_alg_rule_t *alg_p = (ompi_coll_alg_rule_t*) NULL;
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ompi_coll_com_rule_t *com_p = (ompi_coll_com_rule_t*) NULL;
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ompi_coll_msg_rule_t *msg_p = (ompi_coll_msg_rule_t*) NULL;
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/* stats info */
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int total_alg_count = 0;
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int total_com_count = 0;
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int total_msg_count = 0;
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if (!fname) {
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fprintf(stderr,"Gave NULL as rule table configuration file for tuned collectives... ignoring!\n");
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return (-1);
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}
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if (!rules) {
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fprintf(stderr,"Gave NULL as rule table result ptr!... ignoring!\n");
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return (-2);
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}
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if (n_collectives<1) {
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fprintf(stderr,"Gave %d as max number of collectives in the rule table configuration file for tuned collectives!... ignoring!\n", n_collectives);
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return (-3);
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}
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fptr = fopen (fname, "r");
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if (!fptr) {
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fprintf(stderr,"cannot read rules file [%s]\n", fname);
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goto on_file_error;
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}
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/* make space and init the algorithm rules for each of the n_collectives MPI collectives */
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alg_rules = coll_tuned_mk_alg_rules (n_collectives);
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X = getnext(fptr);
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if (X<0) {
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fprintf(stderr,"Could not read number of collectives in configuration file around line %d\n", fileline);
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goto on_file_error;
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}
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if (X>n_collectives) {
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fprintf(stderr,"Number of collectives in configuration file %d is greater than number of MPI collectives possible %d ??? error around line %d\n", X, n_collectives, fileline);
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goto on_file_error;
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}
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for (x=0;x<X;x++) { /* for each collective */
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CI = getnext (fptr);
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if (CI<0) {
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fprintf(stderr,"Could not read next Collective id in configuration file around line %d\n", fileline);
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goto on_file_error;
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}
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if (CI>=n_collectives) {
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fprintf(stderr,"Collective id in configuration file %d is greater than MPI collectives possible %d. Error around line %d\n", CI, n_collectives, fileline);
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goto on_file_error;
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}
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if (alg_rules[CI].alg_rule_id != CI) {
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printf("Internal error in handling collective ID %d\n", CI);
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coll_tuned_free_all_rules (*rules, n_collectives);
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return (-4);
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}
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alg_p = &alg_rules[CI];
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alg_p->alg_rule_id = CI;
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alg_p->n_com_sizes = 0;
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alg_p->com_rules = (ompi_coll_com_rule_t *) NULL;
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NCS = getnext (fptr);
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if (NCS<0) {
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fprintf(stderr,"Couldnot read count of communicators for collective ID %d at around line %d\n", CI, fileline);
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goto on_file_error;
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}
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alg_p->n_com_sizes = NCS;
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alg_p->com_rules = coll_tuned_mk_com_rules (NCS, CI);
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for (ncs=0;ncs<NCS;ncs++) { /* for each comm size */
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com_p = &(alg_p->com_rules[ncs]);
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CS = getnext (fptr);
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if (CS<0) {
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fprintf(stderr,"Couldnot read communicator size for collective ID %d com rule %d at around line %d\n", CI, ncs, fileline);
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goto on_file_error;
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}
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com_p->mpi_comsize = CS;
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NMS = getnext (fptr);
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if (NMS<0) {
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fprintf(stderr,"Couldnot read number of message sizes for collective ID %d com rule %d at around line %d\n", CI, ncs, fileline);
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goto on_file_error;
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}
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com_p->n_msg_sizes = NMS;
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com_p->msg_rules = coll_tuned_mk_msg_rules (NMS, CI, ncs, CS);
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msg_p = com_p->msg_rules;
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for (nms=0;nms<NMS;nms++) { /* for each msg size */
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msg_p = &(com_p->msg_rules[nms]);
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MS = getnext (fptr);
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if (MS<0) {
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fprintf(stderr,"Couldnot read message size for collective ID %d com rule %d msg rule %d at around line %d\n", CI, ncs, nms, fileline);
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goto on_file_error;
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}
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msg_p->msg_size = MS;
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ALG = getnext (fptr);
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if (ALG<0) {
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fprintf(stderr,"Couldnot read target algorithm method for collective ID %d com rule %d msg rule %d at around line %d\n", CI, ncs, nms, fileline);
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goto on_file_error;
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}
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msg_p->result_alg = ALG;
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SS = getnext (fptr);
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if (SS<0) {
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fprintf(stderr,"Couldnot read target segment size for collective ID %d com rule %d msg rule %d at around line %d\n", CI, ncs, nms, fileline);
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goto on_file_error;
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}
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msg_p->result_segsize = SS;
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if (!nms && MS) {
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fprintf(stderr,"All algorithms must specify a rule for message size of zero upwards always first!\n");
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fprintf(stderr,"Message size was %d for collective ID %d com rule %d msg rule %d at around line %d\n", MS, CI, ncs, nms, fileline);
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goto on_file_error;
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}
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total_msg_count++;
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} /* msg size */
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total_com_count++;
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} /* comm size */
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total_alg_count++;
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} /* per collective */
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fclose (fptr);
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printf("\nStats\n");
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printf("Collectives with rules\t\t\t: %5d\n", total_alg_count);
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printf("Communicator sizes with rules\t\t: %5d\n", total_com_count);
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printf("Message sizes with rules\t\t: %5d\n", total_msg_count);
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printf("Lines in configuration file read\t\t: %5d\n", fileline);
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printf("\n");
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/* return the rules to the caller */
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*rules = alg_rules;
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return (total_alg_count);
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on_file_error:
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/* here we close out the file and delete any memory allocated nicely */
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/* we return back a verbose message and a count of -1 algorithms read */
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/* draconian but its better than having a bad collective decision table */
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fprintf(stderr,"read_rules_config_file: bad configure file [%s]. Read afar as line %d\n", fname, fileline);
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fprintf(stderr,"Ignoring user supplied tuned collectives configuration decision file.\n");
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fprintf(stderr,"Switching back to [compiled in] fixed decision table.\n");
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fprintf(stderr,"Fix errors as listed above and try again.\n");
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/* deallocate memory if allocated */
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if (alg_rules) coll_tuned_free_all_rules (alg_rules, n_collectives);
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/* close file */
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if (fptr) fclose (fptr);
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*rules = (ompi_coll_alg_rule_t*) NULL;
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return (-1);
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}
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static int getnext (FILE *fptr)
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{
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int val;
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int rc;
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char trash;
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do {
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rc = fscanf(fptr, "%d", &val);
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if (rc==EOF) return (MYEOF);
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if (1==rc) return (val);
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else {
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rc = fread(&trash, 1, 1, fptr);
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if ('\n'==trash) fileline++;
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if ('#'==trash) skiptonewline (fptr);
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}
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} while (1);
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return rc;
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}
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static void skiptonewline (FILE *fptr)
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{
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char val;
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int rc;
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do {
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rc = fread(&val, 1, 1, fptr);
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if (0==rc) return;
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if ((1==rc)&&('\n'==val)) {
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fileline++;
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return;
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}
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} while (1);
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}
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