Developer Guide

Developer Guide for Intel® oneAPI Math Kernel Library Windows*

ID 766692
Date 3/31/2023

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Document Table of Contents

Running the Software

To obtain results for the pre-determined sample problem sizes on a given system, type:



To run the software for other problem sizes, see the extended help included with the program. You can view extended help by running the program executable with the -e option:


linpack_xeon64.exe -e

The pre-defined data input files lininput_xeon32 and lininput_xeon64 are examples. Different systems have different numbers of processors or amounts of memory and therefore require new input files. The extended help can give insight into proper ways to change the sample input files.

Each input file requires the following minimum amount of memory:

lininput_xeon32             2 GB

lininput_xeon64            16 GB

If the system has less memory than the above sample data input requires, you may need to edit or create your own data input files, as explained in the extended help.

The Intel Optimized LINPACK Benchmark determines the optimal number of OpenMP threads to use. To run a different number, you can set the OMP_NUM_THREADS or MKL_NUM_THREADS environment variable inside a sample script. If you run the Intel Optimized LINPACK Benchmark without setting the number of threads, it defaults to the number of physical cores.

Product and Performance Information

Performance varies by use, configuration and other factors. Learn more at

Notice revision #20201201