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Subject: [OMPI users] CPU burning in Wait state
From: Vincent Rotival (vincent.rotival_at_[hidden])
Date: 2008-09-02 14:25:48


Dear all

I think I already read some comments on this issue, but I'd like to know
of latest versions of OpenMPI have managed to solve it. I am now running
1.2.5

If I run a MPI program with synchronization routines (e.g. MPI_barrier,
MPI_bcast...), all threads waiting for data are still burning CPU. On
the other hand when using non-blocking receives all threads waiting for
data are not consuming any CPU.

Would there be a possibility to use MPI_Bcast without burning CPU power ?

Thanks in advance

Vincent

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