Re: Instructions for Installing BLAS and LAPACK library on Octave 5.2.0

[Ian McCallion]

On Friday, 25 September 2020, Ilaya Bharathi <ilaya.bharathi@fcagroup.com> wrote:

Hi team, 

I'm looking for Instructions to install libraries for multithreading purposes on Octave 5.2.0 on the Windows 10 operating system.

After some research, I found BLAS and LAPACK libraries would help to implement multithreading. Unfortunately, I wasn't able to find the proper instructions to configure the libraries I need.

The openblas library is included with your octave installation and configured for use (assuming you used the installation exe program rather than the zip file). 

This means if you have a program such as:

   a = rand(1, 1000000);

   b = a*a;

then Octave will automatically use openBLAS to do the calculations. By default openblas uses all processor threads. You can configure the number of threads using the environment variable OPENBLAS_NUM_THREADS.

Cheers Ian