--- /dev/null
+/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
+/*
+ *
+ * (C) 2003 by Argonne National Laboratory.
+ * See COPYRIGHT in top-level directory.
+ */
+
+#include "mpi.h"
+#include "mpitest.h"
+#include "smpi_cocci.h"
+#include <stdio.h>
+#include <stdlib.h>
+#ifdef HAVE_SYS_TIME_H
+#include <sys/time.h>
+#endif
+#include <time.h>
+#include <math.h>
+#include <assert.h>
+
+/* FIXME: What is this test supposed to accomplish? */
+
+#define START_BUF (1)
+#define LARGE_BUF (256 * 1024)
+
+/* FIXME: MAX_BUF is too large */
+#define MAX_BUF (32 * 1024 * 1024)
+#define LOOPS 10
+
+SMPI_VARINIT_GLOBAL(sbuf, char*);
+SMPI_VARINIT_GLOBAL(rbuf, char*);
+SMPI_VARINIT_GLOBAL(recvcounts, int*);
+SMPI_VARINIT_GLOBAL(displs, int*);
+SMPI_VARINIT_GLOBAL_AND_SET(errs, int, 0);
+
+/* #define dprintf printf */
+#define dprintf(...)
+
+typedef enum {
+ REGULAR,
+ BCAST,
+ SPIKE,
+ HALF_FULL,
+ LINEAR_DECREASE,
+ BELL_CURVE
+} test_t;
+
+void comm_tests(MPI_Comm comm);
+double run_test(long long msg_size, MPI_Comm comm, test_t test_type, double * max_time);
+
+int main(int argc, char ** argv)
+{
+ int comm_size, comm_rank;
+ MPI_Comm comm;
+
+ MTest_Init(&argc, &argv);
+ MPI_Comm_size(MPI_COMM_WORLD, &comm_size);
+ MPI_Comm_rank(MPI_COMM_WORLD, &comm_rank);
+
+ if (LARGE_BUF * comm_size > MAX_BUF)
+ goto fn_exit;
+
+ SMPI_VARGET_GLOBAL(sbuf) = (void *) calloc(MAX_BUF, 1);
+ SMPI_VARGET_GLOBAL(rbuf) = (void *) calloc(MAX_BUF, 1);
+
+ srand(time(NULL));
+
+ SMPI_VARGET_GLOBAL(recvcounts) = (void *) malloc(comm_size * sizeof(int));
+ SMPI_VARGET_GLOBAL(displs) = (void *) malloc(comm_size * sizeof(int));
+ if (!SMPI_VARGET_GLOBAL(recvcounts) || !SMPI_VARGET_GLOBAL(displs) || !SMPI_VARGET_GLOBAL(sbuf) || !SMPI_VARGET_GLOBAL(rbuf)) {
+ fprintf(stderr, "Unable to allocate memory:\n");
+ if (!SMPI_VARGET_GLOBAL(sbuf)) fprintf(stderr,"\tsbuf of %d bytes\n", MAX_BUF );
+ if (!SMPI_VARGET_GLOBAL(rbuf)) fprintf(stderr,"\trbuf of %d bytes\n", MAX_BUF );
+ if (!SMPI_VARGET_GLOBAL(recvcounts)) fprintf(stderr,"\trecvcounts of %zd bytes\n", comm_size * sizeof(int) );
+ if (!SMPI_VARGET_GLOBAL(displs)) fprintf(stderr,"\tdispls of %zd bytes\n", comm_size * sizeof(int) );
+ fflush(stderr);
+ MPI_Abort(MPI_COMM_WORLD, -1);
+ exit(-1);
+ }
+
+ if (!comm_rank) {
+ dprintf("Message Range: (%d, %d); System size: %d\n", START_BUF, LARGE_BUF, comm_size);
+ fflush(stdout);
+ }
+
+
+ /* COMM_WORLD tests */
+ if (!comm_rank) {
+ dprintf("\n\n==========================================================\n");
+ dprintf(" MPI_COMM_WORLD\n");
+ dprintf("==========================================================\n");
+ }
+ comm_tests(MPI_COMM_WORLD);
+
+ /* non-COMM_WORLD tests */
+ if (!comm_rank) {
+ dprintf("\n\n==========================================================\n");
+ dprintf(" non-COMM_WORLD\n");
+ dprintf("==========================================================\n");
+ }
+ MPI_Comm_split(MPI_COMM_WORLD, (comm_rank == comm_size - 1) ? 0 : 1, 0, &comm);
+ if (comm_rank < comm_size - 1)
+ comm_tests(comm);
+ MPI_Comm_free(&comm);
+
+ /* Randomized communicator tests */
+ if (!comm_rank) {
+ dprintf("\n\n==========================================================\n");
+ dprintf(" Randomized Communicator\n");
+ dprintf("==========================================================\n");
+ }
+ MPI_Comm_split(MPI_COMM_WORLD, 0, rand(), &comm);
+ comm_tests(comm);
+ MPI_Comm_free(&comm);
+
+ //free(SMPI_VARGET_GLOBAL(sbuf));
+ //free(SMPI_VARGET_GLOBAL(rbuf));
+ free(SMPI_VARGET_GLOBAL(recvcounts));
+ free(SMPI_VARGET_GLOBAL(displs));
+
+fn_exit:
+ MTest_Finalize(SMPI_VARGET_GLOBAL(errs));
+ MPI_Finalize();
+
+ return 0;
+}
+
+void comm_tests(MPI_Comm comm)
+{
+ int comm_size, comm_rank;
+ double rtime = rtime; /* stop warning about unused variable */
+ double max_time;
+ long long msg_size;
+
+ MPI_Comm_size(comm, &comm_size);
+ MPI_Comm_rank(comm, &comm_rank);
+
+ for (msg_size = START_BUF; msg_size <= LARGE_BUF; msg_size *= 2) {
+ if (!comm_rank) {
+ dprintf("\n====> MSG_SIZE: %d\n", (int) msg_size);
+ fflush(stdout);
+ }
+
+ rtime = run_test(msg_size, comm, REGULAR, &max_time);
+ if (!comm_rank) {
+ dprintf("REGULAR:\tAVG: %.3f\tMAX: %.3f\n", rtime, max_time);
+ fflush(stdout);
+ }
+
+ rtime = run_test(msg_size, comm, BCAST, &max_time);
+ if (!comm_rank) {
+ dprintf("BCAST:\tAVG: %.3f\tMAX: %.3f\n", rtime, max_time);
+ fflush(stdout);
+ }
+
+ rtime = run_test(msg_size, comm, SPIKE, &max_time);
+ if (!comm_rank) {
+ dprintf("SPIKE:\tAVG: %.3f\tMAX: %.3f\n", rtime, max_time);
+ fflush(stdout);
+ }
+
+ rtime = run_test(msg_size, comm, HALF_FULL, &max_time);
+ if (!comm_rank) {
+ dprintf("HALF_FULL:\tAVG: %.3f\tMAX: %.3f\n", rtime, max_time);
+ fflush(stdout);
+ }
+
+ rtime = run_test(msg_size, comm, LINEAR_DECREASE, &max_time);
+ if (!comm_rank) {
+ dprintf("LINEAR_DECREASE:\tAVG: %.3f\tMAX: %.3f\n", rtime, max_time);
+ fflush(stdout);
+ }
+
+ rtime = run_test(msg_size, comm, BELL_CURVE, &max_time);
+ if (!comm_rank) {
+ dprintf("BELL_CURVE:\tAVG: %.3f\tMAX: %.3f\n", rtime, max_time);
+ fflush(stdout);
+ }
+ }
+}
+
+double run_test(long long msg_size, MPI_Comm comm, test_t test_type,
+ double * max_time)
+{
+ int i, j;
+ int comm_size, comm_rank;
+ double start, end;
+ double total_time, avg_time;
+ MPI_Aint tmp;
+
+ MPI_Comm_size(comm, &comm_size);
+ MPI_Comm_rank(comm, &comm_rank);
+
+ SMPI_VARGET_GLOBAL(displs)[0] = 0;
+ for (i = 0; i < comm_size; i++) {
+ if (test_type == REGULAR)
+ SMPI_VARGET_GLOBAL(recvcounts)[i] = msg_size;
+ else if (test_type == BCAST)
+ SMPI_VARGET_GLOBAL(recvcounts)[i] = (!i) ? msg_size : 0;
+ else if (test_type == SPIKE)
+ SMPI_VARGET_GLOBAL(recvcounts)[i] = (!i) ? (msg_size / 2) : (msg_size / (2 * (comm_size - 1)));
+ else if (test_type == HALF_FULL)
+ SMPI_VARGET_GLOBAL(recvcounts)[i] = (i < (comm_size / 2)) ? (2 * msg_size) : 0;
+ else if (test_type == LINEAR_DECREASE) {
+ tmp = 2 * msg_size * (comm_size - 1 - i) / (comm_size - 1);
+ if (tmp != (int)tmp) {
+ fprintf( stderr, "Integer overflow in variable tmp\n" );
+ MPI_Abort( MPI_COMM_WORLD, 1 );
+ exit(1);
+ }
+ SMPI_VARGET_GLOBAL(recvcounts)[i] = (int) tmp;
+
+ /* If the maximum message size is too large, don't run */
+ if (tmp > MAX_BUF) return 0;
+ }
+ else if (test_type == BELL_CURVE) {
+ for (j = 0; j < i; j++) {
+ if (i - 1 + j >= comm_size) continue;
+ tmp = msg_size * comm_size / (log(comm_size) * i);
+ SMPI_VARGET_GLOBAL(recvcounts)[i - 1 + j] = (int) tmp;
+ SMPI_VARGET_GLOBAL(displs)[i - 1 + j] = 0;
+
+ /* If the maximum message size is too large, don't run */
+ if (tmp > MAX_BUF) return 0;
+ }
+ }
+
+ if (i < comm_size - 1)
+ SMPI_VARGET_GLOBAL(displs)[i+1] = SMPI_VARGET_GLOBAL(displs)[i] + SMPI_VARGET_GLOBAL(recvcounts)[i];
+ }
+
+ /* Test that:
+ 1: sbuf is large enough
+ 2: rbuf is large enough
+ 3: There were no failures (e.g., tmp nowhere > rbuf size
+ */
+ MPI_Barrier(comm);
+ start = MPI_Wtime();
+ for (i = 0; i < LOOPS; i++) {
+ MPI_Allgatherv(SMPI_VARGET_GLOBAL(sbuf), SMPI_VARGET_GLOBAL(recvcounts)[comm_rank], MPI_CHAR,
+ SMPI_VARGET_GLOBAL(rbuf), SMPI_VARGET_GLOBAL(recvcounts), SMPI_VARGET_GLOBAL(displs), MPI_CHAR, comm);
+ }
+ end = MPI_Wtime();
+ MPI_Barrier(comm);
+
+ /* Convert to microseconds (why?) */
+ total_time = 1.0e6 * (end - start);
+ MPI_Reduce(&total_time, &avg_time, 1, MPI_DOUBLE, MPI_SUM, 0, comm);
+ MPI_Reduce(&total_time, max_time, 1, MPI_DOUBLE, MPI_MAX, 0, comm);
+
+ return (avg_time / (LOOPS * comm_size));
+}
