MKL 10.3 update 5 has made many strides over previous versions in fixing data races in multi-thread applications. I run tests on my code under Intel Inspector XE , and the data races inside MKL are almost gone
... EXCEPT for this one that keeps cropping up. I do not believe it is a "harmless" data race. They never are...
This needs to run with OpenMP on, obviously.
ID Problem Sources Modules State
P1 Data race testzgetrf.cpp testzgetrf.exe New
The actual data race (write) is at this location.
mkl_core.dll!mkl_serv_deallocate - mkl_core.dll:4937
testzgetrf.exe!zgetrf - testzgetrf.exe:6101
testzgetrf.exe!test - testzgetrf.cpp:27
[cpp]#include "mkl_lapack.h"
#include
void test()
{
#define NSIZE 20
#pragma omp parallel for
for( int iLoop=0;iLoop<20;iLoop++){
MKL_Complex16 a[NSIZE][NSIZE];
for( int i=0;i.real=1;
a.imag=0;
}else{
a.real=0;
a.imag=0;
}
}
}
int M = NSIZE;
int N = NSIZE;
int info;
int ipvt[NSIZE];
zgetrf(&M, &N, (MKL_Complex16 *)a, &M, ipvt, &info);
//std::cout << info << std::endl;
}
}
int main(int argc, char * argv[])
{
test();
return 0;
}
[/cpp]
