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MPI

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This commit is contained in:
Martin Thoma 2014-03-09 21:01:47 +01:00
parent b0bddad82f
commit 420b6b31fd
5 changed files with 41 additions and 22 deletions
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20
documents/Programmierparadigmen/scripts/mpi/comm-rank-example.c
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@ -1,13 +1,13 @@
#include "mpi.h"
int rank;
MPI_Comm comm;
int rank;
MPI_Comm comm;
...
MPI_Comm_rank(comm, &rank);
if (rank==0) {
... Code fur Prozess 0 ...
}
else {
... Code fur die anderen Prozesse ...
}
...
MPI_Comm_rank(comm, &rank);
if (rank==0) {
... Code fur Prozess 0 ...
}
else {
... Code fur die anderen Prozesse ...
}

10
documents/Programmierparadigmen/scripts/mpi/comm-size-example.c
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@ -1,7 +1,7 @@
#include "mpi.h"
int size;
MPI_Comm comm;
...
MPI_Comm_size(comm, &size);
...
int size;
MPI_Comm comm;
...
MPI_Comm_size(comm, &size);
...

14
documents/Programmierparadigmen/scripts/mpi/mpi-reduce-example.c
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@ -1,10 +1,10 @@
#include "mpi.h"
int myid;
int recvbuf[DATASIZE], sendbuf[DATA_SIZE];
int myid;
int recvbuf[DATASIZE], sendbuf[DATA_SIZE];
...
/* Minimum bilden */
MPI_Reduce(sendbuf, recvbuf, DATA_SIZE, MPI_INT, MPI_MIN,
0, MPI_COMM_WORLD);
...
...
/* Minimum bilden */
MPI_Reduce(sendbuf, recvbuf, DATA_SIZE, MPI_INT, MPI_MIN,
0, MPI_COMM_WORLD);
...