X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/db17323a11a3089f492c2cae1be7913673689d5c..c81c99a491282f76757c2673961e3cdee6853539:/teshsuite/smpi/mpich3-test/coll/scattern.c

diff --git a/teshsuite/smpi/mpich3-test/coll/scattern.c b/teshsuite/smpi/mpich3-test/coll/scattern.c
new file mode 100644
index 0000000000..0c2a096679
--- /dev/null
+++ b/teshsuite/smpi/mpich3-test/coll/scattern.c
@@ -0,0 +1,58 @@
+/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
+/*
+ *  (C) 2001 by Argonne National Laboratory.
+ *      See COPYRIGHT in top-level directory.
+ */
+#include "mpi.h"
+#include <stdlib.h>
+#include <stdio.h>
+
+/* This example sends a vector and receives individual elements */
+
+int main( int argc, char **argv )
+{
+    MPI_Datatype vec;
+    double *vecin, *vecout, ivalue;
+    int    root, i, n, stride, err = 0;
+    int    rank, size;
+
+    MPI_Init( &argc, &argv );
+    
+    MPI_Comm_size( MPI_COMM_WORLD, &size );
+    MPI_Comm_rank( MPI_COMM_WORLD, &rank );
+
+    n = 12;
+    stride = 10;
+    vecin = (double *)malloc( n * stride * size * sizeof(double) );
+    vecout = (double *)malloc( n * sizeof(double) );
+    
+    MPI_Type_vector( n, 1, stride, MPI_DOUBLE, &vec );
+    MPI_Type_commit( &vec );
+
+    for (i=0; i<n*stride*size; i++) vecin[i] = (double)i;
+    for (root=0; root<size; root++) {
+	for (i=0; i<n; i++) vecout[i] = -1.0;
+	MPI_Scatter( vecin, 1, vec, vecout, n, MPI_DOUBLE, root, 
+		     MPI_COMM_WORLD );
+	ivalue = rank * ((n-1) * stride + 1);
+	for (i=0; i<n; i++) {
+	    if (vecout[i] != ivalue) {
+		printf( "Expected %f but found %f\n", 
+			ivalue, vecout[i] );
+		err++;
+	    }
+	    ivalue += stride;
+	}
+    }
+    i = err;
+    MPI_Allreduce( &i, &err, 1, MPI_INT, MPI_SUM, MPI_COMM_WORLD );
+    if (rank == 0) {
+	if (err > 0) printf( "Found %d errors!\n", err );
+	else         printf( " No Errors\n" );
+    }
+    MPI_Type_free( &vec );
+    MPI_Finalize();
+    return 0;
+       
+}
+