Comments (4)
Fixed this by changing the line
shared(local_residual, v1v, v2v,)
to
shared(local_residual, v1v, v2v, n)
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I cannot reproduce this problem with Clang 14 through 16 nor with godbolt.org where I used this source code:
#include <cmath>
typedef int local_int_t;
struct Vector_STRUCT{local_int_t localLength;double * values;void*optimizationData;};
typedef struct Vector_STRUCT Vector;
int ComputeResidual(const local_int_t n, const Vector & v1, const Vector & v2, double & residual) {
double * v1v = v1.values;
double * v2v = v2.values;
double local_residual = 0.0;
#pragma omp parallel shared(local_residual, v1v, v2v)
{
double threadlocal_residual = 0.0;
#pragma omp for
for (local_int_t i=0; i<n; i++) {
double diff = std::fabs(v1v[i] - v2v[i]);
if (diff > threadlocal_residual) threadlocal_residual = diff;
}
#pragma omp critical
{
if (threadlocal_residual>local_residual) local_residual = threadlocal_residual;
}
}
residual = local_residual;
return 0;
}
It would be good to know the origins of the tool chain used for MPICH 4.1.1. Was it system default installation or it came from another packag manager?
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