Gilles Gouaillardet

Thanks @rhc54 for the explanation. Do you remember the rationale for binding to a single core when `-np 1`? (fwiw, I wrote my reply long before yours ... until I...

That typically occurs when `mpirun` and `libmpi.so` do not match. For example, `mpirun` is from a different Open MPI version or vendor. try to `type mpirun` to figure out which...

you need to `ldd jdftx` please copy/paste the output instead of attaching a screenshot.

Can we have the full (compressed) `config.log`? `configure` tries different methods to support the `ignore_tkr` thing - as-is (e.g. no pragma/directive) - `!GCC$ ATTRIBUTES NO_ARG_CHECK` - `!DEC$ ATTRIBUTES NO_ARG_CHECK` -...

@jsquyres can you please review this ?

@jsquyres i merged both mechanisms per your comment ``` mpirun --mca mpi_yield_when_idle true ... ``` will simply ```sched_yield()```, in order to start sleeping after a while, just do ``` mpirun...

ok, i will do some rewording use ```sleep``` instead of ```poll``` and add a note on how ```sleep``` is implemented.

@jsquyres i share the same vision. just to be clear, what should be the default (e.g. ```spin only``` vs ```spin then yield then poll```) ? should it depend whether we...

@artpol84 please refer to the thread starting at https://www.mail-archive.com/[email protected]//msg20407.html long story short, if we `while (...) sched_yield();`, then `top` reports 100% usage even if the system remains very responsive since...

I will try to contact some folks. meanwhile, here are a few ideas to identify Fujitsu MPI: `MPI_Get_library_version()` returns `FUJITSU MPI Library 4.0.0 (4.0.1fj4.0.0)` ``` $ mpiexec --version mpiexec (Open...