Initial

uebung_04/exercise_01/exercise_01.c

@@ -0,0 +1,17 @@
+#include "mpi.h"
+#include <stdio.h>
+
+int main(int argc, char **argv) {
+  int rank, size, err, n;
+
+  MPI_Init(&argc, &argv);
+
+  MPI_Comm_size(MPI_COMM_WORLD, &size);
+  MPI_Comm_rank(MPI_COMM_WORLD, &rank);
+
+  printf("rank=%d size=%d\n", rank, size);
+
+  MPI_Finalize();
+
+  return 0;
+}

uebung_04/exercise_01/exercise_01.script

@@ -0,0 +1,13 @@
+#!/bin/bash
+
+## parameters
+#PBS -N uebung_04__exercise_01
+#PBS -q entry_teachingq
+#PBS -l select=1:ncpus=8:mpiprocs=8
+#PBS -l walltime=00:05:00
+
+## environment 
+cd ~/pwr/uebung_04/exercise_01
+
+## execute
+mpiexec -n 8 exercise_01.out

uebung_04/exercise_01/uebung_04__exercise_01.o662620

@@ -0,0 +1,8 @@
+rank=2 size=8
+rank=4 size=8
+rank=5 size=8
+rank=6 size=8
+rank=7 size=8
+rank=0 size=8
+rank=1 size=8
+rank=3 size=8

uebung_04/exercise_03/exercise_03.c

@@ -0,0 +1,26 @@
+#include "mpi.h"
+#include <stdio.h>
+
+int main(int argc, char **argv)
+{
+	int rank, size, err, n;
+
+	MPI_Init(&argc, &argv);
+
+	MPI_Comm_size(MPI_COMM_WORLD,&size);
+	MPI_Comm_rank(MPI_COMM_WORLD,&rank);
+
+	printf("rank=%d size=%d\n", rank, size);
+
+	err = MPI_Barrier(MPI_COMM_WORLD);
+
+	n = (rank + 1) * 4711;
+
+	err = MPI_Bcast(&n, 1, MPI_INT, 1, MPI_COMM_WORLD);
+
+	printf("Received =%d\n", n);
+
+	MPI_Finalize();
+
+	return 0;
+}

uebung_04/exercise_03/exercise_03.script

@@ -0,0 +1,13 @@
+#!/bin/bash
+
+## parameters
+#PBS -N uebung_04__exercise_03
+#PBS -q entry_teachingq
+#PBS -l select=1:ncpus=8:mpiprocs=8
+#PBS -l walltime=00:05:00
+
+## environment 
+cd ~/pwr/uebung_04/exercise_03
+
+## execute
+mpiexec -n 8 exercise_03.out

uebung_04/exercise_05/exercise_05.c

@@ -0,0 +1,33 @@
+#include "mpi.h"
+#include <stdio.h>
+
+int main(int argc, char **argv) {
+  int rank, size, err, n, sum;
+
+  MPI_Init(&argc, &argv);
+
+  MPI_Comm_size(MPI_COMM_WORLD, &size);
+  MPI_Comm_rank(MPI_COMM_WORLD, &rank);
+
+  printf("rank=%d size=%d\n", rank, size);
+
+  n = rank + 1;
+
+  sum = 4710;
+
+  MPI_Barrier(MPI_COMM_WORLD);
+
+  MPI_Reduce(&n, &sum, 1, MPI_INT, MPI_SUM, 0, MPI_COMM_WORLD);
+  printf("Received in reduction=%d\n", sum);
+
+  MPI_Barrier(MPI_COMM_WORLD);
+
+  sum = 3710;
+
+  MPI_Allreduce(&n, &sum, 1, MPI_INT, MPI_SUM, MPI_COMM_WORLD);
+  printf("Received in allreduction =%d\n", sum);
+
+  MPI_Finalize();
+
+  return 0;
+}