Installing OpenBLAS

Procedure

1. Use PuTTY to log in to the server as the root user.
2. Run the following commands to decompress the OpenBLAS installation package:

   tar -xvf OpenBLAS-0.3.7.tar.gz

3. Run the following command to switch to the directory generated after the package is decompressed:

   cd OpenBLAS-0.3.7

4. (Optional) If the GCC compiler version is not GNU 9 or later, modify the Makefile.arm64 file and run the gcc -v command to query the GCC compiler version.
   1. Open Makefile.arm64.

      vi Makefile.arm64

   2. Press i to enter the insert mode and delete the content in the red box shown in the following figure:

      

   3. Press Esc, type :wq!, and press Enter to save the changes and exit.
5. Run the following commands to install OpenBLAS:

   make BINARY=64 FC=/usr/bin/gfortran USE_THREAD=1
   make PREFIX=/path/to/OPENBLAS install

6. Run the following command to set the OpenBLAS environment variable:

   export LD_LIBRARY_PATH=/path/to/OPENBLAS/lib:$LD_LIBRARY_PATH