It looks like you are running in parallel a code compiled for serial
execution.  There is a rather long section in the general user guide
describing compilation for parallel execution and what to do in case
configure does not recognize your parallel compilation environment. Paolo

Il 15/ott/2016 12:28 AM, "Afshin Arjangmehr" <> ha

> Dear QE developers and users,
> I have asked the authorities to install QE 5.4.0 on university cluster
> (operating system: CentOS) and now, after installation, something is wrong
> with the parallel executions.
> I perform pwscf run and in its output file, every step is repeated equal
> to the number of cpu cores (N). It is similar to performing N serial runs
> altogether, each on a single core (please see attached output file).
> I had this problem on my personal cluster (operating system: Ubuntu 16.04
> LTS) with QE 5.4.0 and QE 6.0 (not with QE 5.1 that I installed using sudo
> apt-get install ... ). I am really confused right now, since I have no idea
> whether it is related to QE or mpich2. Can you please recommend me on how
> to solve this issue? Is there any specific setting in ./configure step?
> Thanks for your kind response in advance.
> Bests,
> Afshin
> --
> With Best Regards
> Afshin Arjhangemehr
> PhD student in Radiation Application
> Shahid Beheshti University G.C, Tehran, IRAN
> (+98) 912 439 20 64
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