Compiling and Installing Quantum ESPRESSO

Procedure

Use PuTTY to log in to the server as the root user.
Run the following commands to decompress the Quantum ESPRESSO installation package:
```
cd /path/to/QE
tar -xvf q-e-qe-6.4.1.tar.gz
```
Run the following command to switch to the directory generated after decompression:
```
cd q-e-qe-6.4.1
```

Run the following commands to set the BLAS, LAPACK, and ScaLAPACK libraries:

export BLAS_LIBS="-L/path/to/OPENBLAS/lib -lopenblas"
export LAPACK_LIBS="-L/path/to/OPENBLAS/lib -lopenblas"
export SCALAPACK_LIBS="-L/path/to/SCALAPACK -lscalapack"

Run the following commands to perform configuration:

./configure F90=gfortran F77=gfortran  MPIF90=mpifort MPIF77=mpifort  CC=mpicc \
FCFLAGS="-O3" CFLAGS="-O3" \
--with-scalapack=yes \
--prefix=/path/to/QE

Run the following commands to perform compilation and installation:
```
make -j 20 pwall
make install
```
Run the following command to load environment variables:
```
export PATH=/path/to/QE/bin:$PATH
```

Parent topic: Quantum ESPRESSO 6.4.1 Porting Guide (CentOS 7.6)