[Pkg-openmpi-maintainers] Bug#598553: Bug#598553: r-cran-rmpi: slave processes eat CPU when they have nothing to do

Manuel Prinz manuel at debian.org
Thu Oct 21 12:06:34 UTC 2010


Am Montag, den 11.10.2010, 14:26 -0500 schrieb Jeff Squyres:
> 3. We do know how to make our progression engine switch between
> blocking and busy-polling (i.e., we've had many discussions about it
> over the years -- shared memory message passing is the Big Problem).
> But no one has ever had the time / resources / motivation to implement
> it.  If anyone has some time, I would love to explain what would need
> to be done (it's not rocket science, but it is a bit tricky and will
> require getting into some minutia in the guts of Open MPI :-\ ).
> 
> Does that help at least explain why the code is the way it is?

Yes, thanks for your input! The question that remains is how to proceed
with the bug report. The closest ticket upstream seems to be #193 [1]
which has not been updated for 3 years. I could either mark the Debian
bug as "wontfix" or reference #193 and leave it open with severity
"wishlist". (But I doubt that someone will implement that soonish.)

Zack, Jeff, any opinions on how to proceed?

Best regards,
Manuel

[1] https://svn.open-mpi.org/trac/ompi/ticket/193






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