[QE-users] Chosing OFLAG for intel parallel studio when compiling q-e.

[Hongyi Zhao]

On Sat, Jul 18, 2020 at 10:50 AM Hongyi Zhao <hongyi.zhao at gmail.com> wrote:
>
> Hi,
>
> When compiling the q-e git master version with intel
> parallel_studio_xe/2020.1.102, I want to set the OFLAG to xHOST for
> obtaining the optimized perfromance according to my CPU architecture.
>
> For achieving this aim, I tried the following but failed. See the
> output for more information:
>
> $ ./configure --with-scalapack=intel MPIF90=mpiifort OFLAG+=xHOST
> configure: error: invalid variable name: `OFLAG+'

Based on the user_guide here:
https://github.com/QEF/q-e/blob/master/Doc/user_guide.tex. I finally
figure out the following method via revising the compilation flags in
the make.inc file as following after running the configure command:

CFLAGS         = -O3 -xHost ...
[...]
FFLAGS         = -O3 -xHost ...

-- 
Hongyi Zhao <hongyi.zhao at gmail.com>