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/*
* Copyright (C) by Argonne National Laboratory
* See COPYRIGHT in top-level directory
*/
#include "mpi.h"
#include "mpitestconf.h"
#ifdef HAVE_IOSTREAM
// Not all C++ compilers have iostream instead of iostream.h
#include <iostream>
#ifdef HAVE_NAMESPACE_STD
// Those that do often need the std namespace; otherwise, a bare "cout"
// is likely to fail to compile
using namespace std;
#endif
#else
#include <iostream.h>
#endif
#include "mpitestcxx.h"
void uop(const void *invec, void *inoutvec, int count, const MPI::Datatype & datatype)
{
int i;
int *cin = (int *) invec, *cout = (int *) inoutvec;
for (i = 0; i < count; i++) {
cout[i] = cin[i] + cout[i];
}
}
int main(int argc, char **argv)
{
MPI::Op sumop;
MPI::Intracomm comm = MPI::COMM_WORLD;
int errs = 0;
int i, count, rank;
MTest_Init();
sumop.Init(uop, true);
rank = comm.Get_rank();
for (count = 1; count < 66000; count = count * 2) {
int *vin, *vout;
vin = new int[count];
vout = new int[count];
for (i = 0; i < count; i++) {
vin[i] = i;
vout[i] = -1;
}
comm.Exscan(vin, vout, count, MPI::INT, sumop);
if (rank == 0) {
for (i = 0; i < count; i++) {
if (vout[i] != -1) {
errs++;
if (errs < 10) {
cerr << "vout[" << i << "] = " << vout[i] << endl;
}
}
}
} else {
for (i = 0; i < count; i++) {
if (vout[i] != i * (rank)) {
errs++;
if (errs < 10) {
cerr << "vout[" << i << "] = " << vout[i] << endl;
}
}
}
}
delete[]vin;
delete[]vout;
}
sumop.Free();
MTest_Finalize(errs);
return 0;
}
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