Developer Guide

Developer Guide for Intel® oneAPI Math Kernel Library macOS*

ID 766688
Date 11/07/2023
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_cd64 -e

The pre-defined data input file lininput isan example. Different systems have different amounts of memory and therefore require new input files. The extended help can give insight into proper ways to change the sample input files.

lininput requires at least 2 GB of memory.

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