X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/aac4ba41ea27fe8168bebed009abebd7e5c3f006..4cdc0f888550cbaefe6094ae801230336d005337:/teshsuite/smpi/mpich3-test/rma/manyget.c

diff --git a/teshsuite/smpi/mpich3-test/rma/manyget.c b/teshsuite/smpi/mpich3-test/rma/manyget.c
new file mode 100644
index 0000000000..2db4db0c18
--- /dev/null
+++ b/teshsuite/smpi/mpich3-test/rma/manyget.c
@@ -0,0 +1,60 @@
+/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
+/*
+ *  (C) 2015 by Argonne National Laboratory.
+ *      See COPYRIGHT in top-level directory.
+ */
+
+/* This test triggers a limitation in the Portals4 netmod where
+ * too many large messages can overflow the available ME entries
+ * (PTL_NO_SPACE). Our approach is to queue the entire send message
+ * in the Rportals layer until we know there is ME space available.
+ */
+#include <stdlib.h>
+#include <stdio.h>
+#include <mpi.h>
+#include "mpitest.h"
+
+#define BUFSIZE (32*1024)
+
+int main(int argc, char *argv[])
+{
+    int i, rank, size;
+    int *buf;
+    MPI_Win win;
+
+    MPI_Init(&argc, &argv);
+
+    buf = malloc(BUFSIZE);
+    MTEST_VG_MEM_INIT(buf, BUFSIZE);
+
+    MPI_Comm_rank(MPI_COMM_WORLD, &rank);
+    MPI_Comm_size(MPI_COMM_WORLD, &size);
+
+    if (size != 2) {
+        printf("test must be run with 2 processes!\n");
+        MPI_Abort(MPI_COMM_WORLD, 1);
+    }
+
+    if (rank == 0)
+        MPI_Win_create(buf, BUFSIZE, sizeof(int), MPI_INFO_NULL, MPI_COMM_WORLD, &win);
+    else
+        MPI_Win_create(MPI_BOTTOM, 0, 1, MPI_INFO_NULL, MPI_COMM_WORLD, &win);
+
+    MPI_Win_fence(0, win);
+
+    if (rank == 1) {
+        for (i = 0; i < 1000; i++)
+            MPI_Get(buf, BUFSIZE / sizeof(int), MPI_INT, 0, 0, BUFSIZE / sizeof(int), MPI_INT, win);
+    }
+
+    MPI_Win_fence(0, win);
+    MPI_Win_free(&win);
+
+    if (rank == 0)
+        printf(" No Errors\n");
+
+    free(buf);
+    MPI_Finalize();
+
+    return 0;
+}