On Sep 2, 2008, at 7:25 PM, Vincent Rotival wrote:
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 ?
I'm afraid not at this time. We've talked about adding a blocking
mode for progress, but it hasn't happened yet (and is very unlikely to
happen for the v1.3 series).
--
Jeff Squyres
Cisco Systems
