On Tue, 10 Oct 2017 11:57:51 -0400
Michael Di Domenico wrote:
> i'm getting stuck trying to run some fairly large IMB-MPI alltoall
> tests under openmpi 2.0.2 on rhel 7.4
What is the IB stack used, just RHEL inbox?
Do you run openmpi on the psm mtl for qlogic and openib btl for
mellanox or some
i'm getting stuck trying to run some fairly large IMB-MPI alltoall
tests under openmpi 2.0.2 on rhel 7.4
i have two different clusters, one running mellanox fdr10 and one
running qlogic qdr
if i issue
mpirun -n 1024 ./IMB-MPI1 -npmin 1024 -iter 1 -mem 2.001 alltoallv
the job just stalls after t
>
> Can anyone tell me whether it is legal to pass zero values for some of the
> send count elements in an MPI_AlltoallV() call? I want to perform an
> all-to-all operation but for performance reasons do not want to send data to
> various ranks who don't need to receive any useful values. If it
On Mar 6, 2012, at 4:43 PM, Timothy Stitt wrote:
> Can anyone tell me whether it is legal to pass zero values for some of the
> send count elements in an MPI_AlltoallV() call? I want to perform an
> all-to-all operation but for performance reasons do not want to send data to
> various ranks who
Thanks Jed for the advice. How well-implemented are the one-sided communication
routines? Are they something that could be trusted in a production code?
Sent from my iPad
On Mar 6, 2012, at 6:06 PM, "Jed Brown" mailto:j...@59a2.org>>
wrote:
On Tue, Mar 6, 2012 at 15:43, Timothy Stitt
mailto:t
On Tue, Mar 6, 2012 at 15:43, Timothy Stitt wrote:
> Can anyone tell me whether it is legal to pass zero values for some of the
> send count elements in an MPI_AlltoallV() call? I want to perform an
> all-to-all operation but for performance reasons do not want to send data
> to various ranks who
Hi all,
Can anyone tell me whether it is legal to pass zero values for some of the send
count elements in an MPI_AlltoallV() call? I want to perform an all-to-all
operation but for performance reasons do not want to send data to various ranks
who don't need to receive any useful values. If it i
