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Re: [ESPResSo-users] compile espressomd for single processor
From: |
Henri Menke |
Subject: |
Re: [ESPResSo-users] compile espressomd for single processor |
Date: |
Tue, 8 Jan 2019 15:00:04 +1300 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.2.1 |
Hi Gil,
No, Espresso cannot be compiled without MPI. It used to be possible up
to version 3.3.1 where there was a “mpifake” implementation to mock MPI
capabilities. This has been removed in 4.0 [1].
Nevertheless, you can simply run Espresso without mpirun in which case
it will only use a single core, or you explicitly tell mpirun that you
only want a single core using
mpirun -n 1 ./pypresso ...
Kind regards, Henri
[1] https://github.com/espressomd/espresso/commit/3a5b3a9
On 8/01/19 2:50 PM, Gil Claudio wrote:
> Hi all,
> Is there a way to compile espresso for single processor, i.e., turning off
> all MPI capabilities?
> Thanks.
> Gil
>