Commit df4559bb authored by Swann Perarnau's avatar Swann Perarnau
Browse files

missing file

parent d101dd12
Pipeline #8698 failed with stages
in 31 minutes and 14 seconds
#include <mpi.h>
#include <stdio.h>
#include <assert.h>
#include <math.h>
int main(int argc, char **argv)
int size, rank;
MPI_Init(&argc, &argv);
MPI_Comm_size(MPI_COMM_WORLD, &size);
MPI_Comm_rank(MPI_COMM_WORLD, &rank);
double local[size];
double recv[size];
for(int i = 0; i < size; i++)
local[i] = (double)rank;
MPI_Allreduce(local, recv, size, MPI_DOUBLE, MPI_SUM, MPI_COMM_WORLD);
for(int i = 0; i < size; i++)
assert(fabs(recv[i] - ((size*(size-1))/2.0)) < 1.e-14);
return 0;
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