https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/OpenMP-not-using-all-processors/m-p/1022681#M19773 <P>I am trying to use MKL libraries and OpenMP in a MSVS C++ application on Windows7. The application shows affinity for all 24 processors (2 nodes, 6 processors, HyperThreaded). omp_get_num_procs() also shows 24 processors. &nbsp;When I run the program only 1 node&nbsp;and 6 processors are accessed. This is confirmed &nbsp;when I use "KMP_AFFINITY=verbose,none". It ouputs "OMP: Info #179: KMP_AFFINITY: 1 packages x 6 cores/pkg x 1 threads/core (6 total cores)".&nbsp; I get no compiler or linker complaints.</P> <P>I am in the process of creating a simple program to see if it has the same problem and hopefully find something I missed in the settings.&nbsp;Does anyone have any suggestions?</P> <P>Thanks, Ted&nbsp;</P> Wed, 25 Feb 2015 13:56:25 GMT Edward_Z_1 2015-02-25T13:56:25Z https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/OpenMP-not-using-all-processors/m-p/1022681#M19773 <P>I am trying to use MKL libraries and OpenMP in a MSVS C++ application on Windows7. The application shows affinity for all 24 processors (2 nodes, 6 processors, HyperThreaded). omp_get_num_procs() also shows 24 processors. &nbsp;When I run the program only 1 node&nbsp;and 6 processors are accessed. This is confirmed &nbsp;when I use "KMP_AFFINITY=verbose,none". It ouputs "OMP: Info #179: KMP_AFFINITY: 1 packages x 6 cores/pkg x 1 threads/core (6 total cores)".&nbsp; I get no compiler or linker complaints.</P> <P>I am in the process of creating a simple program to see if it has the same problem and hopefully find something I missed in the settings.&nbsp;Does anyone have any suggestions?</P> <P>Thanks, Ted&nbsp;</P> Wed, 25 Feb 2015 13:56:25 GMT https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/OpenMP-not-using-all-processors/m-p/1022681#M19773 Edward_Z_1 2015-02-25T13:56:25Z