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:

   cd /path/to/OPENBLAS
   tar -xvf OpenBLAS-0.3.6.tar.gz

3. Run the following command to go to the directory generated after decompression:

   cd OpenBLAS-0.3.6

4. Run the following commands to configure environment variables:

   export CC=`which gcc`
   export CXX=`which g++`
   export FC=`which gfortran`

5. Run the following commands to modify the Makefile.system file:
   1. Open the Makefile.system file.

      vi Makefile.system

   2. Type :1161 to go to line 1161 and press i to go to the insert mode.

      Before the modification:

      COMMON_OPT = -O2

      After the modification:

      COMMON_OPT = -O2 -lgfortran

   3. Press Esc, type :wq!, and press Enter to save the file and exit.
6. Run the following commands to perform the compilation and installation:

   mkdir install
   make -j
   make PREFIX=/path/to/OPENBLAS/OpenBLAS-0.3.6/install install

7. Run the following commands to configure environment variables:

   export MATH_ROOT=/path/to/OPENBLAS/OpenBLAS-0.3.6/install