Dear All:
Maybe it is a dumb question... But I'm eager to see the answer:
when compiling Abinit, it needs #make multi_nprocs=N,
when running Abinit, it needs mpiexec or mpirun, which needs to specify the number of cores, say M.
Does the two have to be the same value (N==M)? Or they are simply irrelevant issues?
Thank you very much for clarification!!
-L
"make multi" and "mpirun"? [SOLVED]
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Please have a look at ~abinit/doc/config/build-config.ac in the source package for detailed and up-to-date information about the configuration of Abinit 8 builds.
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Please have a look at ~abinit/doc/config/build-config.ac in the source package for detailed and up-to-date information about the configuration of Abinit 8 builds.
For a video explanation on how to build Abinit 7.x for Linux, please go to: http://www.youtube.com/watch?v=DppLQ-KQA68.
IMPORTANT: when an answer solves your problem, please check the little green V-like button on its upper-right corner to accept it.
-
Alain_Jacques
- Posts: 279
- Joined: Sat Aug 15, 2009 9:34 pm
- Location: Université catholique de Louvain - Belgium
Re: "make multi" and "mpirun"? [SOLVED]
There is no such a thing as a dumb question 
No correlation between N and M ... N defines the number of parallel tasks to compile (some parts of) Abinit i.e. how many concurrent fortran/link/... are invoked, and M is the number of cores invoked at runtime. In other words Abinit executable doesn't "remember" N to manage parallelization at runtime.
Kind regards,
Alain
No correlation between N and M ... N defines the number of parallel tasks to compile (some parts of) Abinit i.e. how many concurrent fortran/link/... are invoked, and M is the number of cores invoked at runtime. In other words Abinit executable doesn't "remember" N to manage parallelization at runtime.Kind regards,
Alain
Re: "make multi" and "mpirun"?
Thank you so much!! That indeed helps a lot!!