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GW computation stuck for a large system

Posted: Fri Mar 25, 2022 1:08 pm
by DavidPolito93
Dear All,

I am trying to perform GW computations for a molecule adsorbed on a bilayer material. The system is sufficiently large to be treated like a finite system (i.e. k-sampling 1 1 1).

I have however a problem, my computation gets stuck at the step which computes the Chi and then crushes. It is probably related to a memory issue I think.

I am attaching the inputs and the logs files. I am using Yambo 5.0.4

Do you have any suggestion?

Best,

Davide Romanin

Re: GW computation stuck for a large system

Posted: Fri Mar 25, 2022 2:12 pm
by Daniele Varsano
Dar Davide,

it seems the problem arise in the linear algebra to obtain the X, you can try to recompile the code using parallel linear algebra (SCALAPACK) (--enable-par-linalg ).

Best,
Daniele

Re: GW computation stuck for a large system

Posted: Fri Mar 25, 2022 7:50 pm
by DavidPolito93
Dear Daniele,

I did it like you suggested:

make clean

./configure --enable-par-linalg

Then I recompiled and no errors appeared.

Anyway, I still have this:

<14m-25s> P1-r4i6n29: [LA] SERIAL linear algebra


Si I assume it didn't go through?

Davide

Re: GW computation stuck for a large system

Posted: Tue Mar 29, 2022 9:22 pm
by Daniele Varsano
Dear Davide,
you should inspect your config.log file and see if the scalapack libraries are correctly linked. This is also reported in the config/setup file or in the header of your report file (indicated as SLK).

Best,
Daniele