[Nek5000-users] very low calculation speed

[nek5000-users at lists.mcs.anl.gov]

Dear Nek devs

Usually I start some calculation with 100-150 processors and it runs with
acceptable speed. But sometimes the speed of calculation is extremely low,
something like 1 step per 10 hours with 50 million mesh points. It seems
like all computational nodes fall on one processors, while the rest just
stay without any job, despite that all requirements about nodes per
processor are satisfied.

Have you ever seen something like that ? And how it can be fixed ?

Regards, Vatslav
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/nek5000-users/attachments/20170920/db666d56/attachment.html>