X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/839ca861fcbfe4230637ffc30766445cc7b4918f..2a4fb0f73d26c846e4c32c563d51a0e2d449da3d:/teshsuite/smpi/mpich3-test/datatype/large_vec.c?ds=sidebyside

diff --git a/teshsuite/smpi/mpich3-test/datatype/large_vec.c b/teshsuite/smpi/mpich3-test/datatype/large_vec.c
new file mode 100644
index 0000000000..f912a6089b
--- /dev/null
+++ b/teshsuite/smpi/mpich3-test/datatype/large_vec.c
@@ -0,0 +1,82 @@
+/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
+/*
+ *  (C) 2014 by Argonne National Laboratory.
+ *      See COPYRIGHT in top-level directory.
+ */
+#include <mpi.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include "mpitest.h"
+
+/* tests non-contig send/recv of a message > 2GB. count=270M, type=long long
+   run with 3 processes to exercise both shared memory and TCP in Nemesis tests*/
+
+int main(int argc, char *argv[])
+{
+    int i, size, rank;
+    int elems = 270000000;
+    MPI_Status status;
+    MPI_Datatype dtype;
+    long long *cols;
+    int errs = 0;
+
+
+    MTest_Init(&argc, &argv);
+
+    /* need large memory */
+    if (sizeof(void *) < 8) {
+        MTest_Finalize(errs);
+        MPI_Finalize();
+        return 0;
+    }
+
+    MPI_Comm_size(MPI_COMM_WORLD, &size);
+    MPI_Comm_rank(MPI_COMM_WORLD, &rank);
+    if (size != 3) {
+        fprintf(stderr, "[%d] usage: mpiexec -n 3 %s\n", rank, argv[0]);
+        MPI_Abort(MPI_COMM_WORLD, 1);
+    }
+
+    cols = malloc(elems * sizeof(long long));
+    if (cols == NULL) {
+        printf("malloc of >2GB array failed\n");
+        errs++;
+        MTest_Finalize(errs);
+        MPI_Finalize();
+        return 0;
+    }
+
+    MPI_Type_vector(elems / 2, 1, 2, MPI_LONG_LONG_INT, &dtype);
+    MPI_Type_commit(&dtype);
+
+    if (rank == 0) {
+        for (i = 0; i < elems; i++)
+            cols[i] = i;
+        /* printf("[%d] sending...\n",rank); */
+        MPI_Send(cols, 1, dtype, 1, 0, MPI_COMM_WORLD);
+        MPI_Send(cols, 1, dtype, 2, 0, MPI_COMM_WORLD);
+    }
+    else {
+        /* printf("[%d] receiving...\n",rank); */
+        for (i = 0; i < elems; i++)
+            cols[i] = -1;
+        MPI_Recv(cols, 1, dtype, 0, 0, MPI_COMM_WORLD, &status);
+        /* MPI_Get_count(&status,MPI_LONG_LONG_INT,&cnt);
+         * Get_count still fails because count is not 64 bit */
+        for (i = 0; i < elems; i++) {
+            if (i % 2)
+                continue;
+            if (cols[i] != i) {
+                printf("Rank %d, cols[i]=%lld, should be %d\n", rank, cols[i], i);
+                errs++;
+            }
+        }
+    }
+
+    MPI_Type_free(&dtype);
+    free(cols);
+
+    MTest_Finalize(errs);
+    MPI_Finalize();
+    return 0;
+}