Thanks for the reply,
On 10/13/2015 04:04 PM, Ralph Castain wrote:
On Oct 12, 2015, at 6:10 AM, Daniel Letai <d...@letai.org.il> wrote:
Hi,
After upgrading to 1.8.8 I can no longer see the map. When looking at the man
page for mpirun, display-map no longer exists. Is there a way to show the map
in 1.8.8 ?
I don’t know why/how it got dropped from the man page, but the display-map
option certainly still exists - do “mpirun -h” to see the full list of options,
and you’ll see it is there. I’ll ensure it gets restored to the man page in the
1.10 series as the 1.8 series is complete.
Thanks for clarifying,
Another issue - I'd like to map 2 process per node - 1 to each socket.
What is the current "correct" syntax? --map-by ppr:2:node doesn't guarantee 1
per Socket. --map-by ppr:1:socket doesn't guarantee 2 per node. I assume it's something
obvious, but the documentation is somewhat lacking.
I'd like to know the general syntax - even if I have 4 socket nodes I'd still
like to map only 2 procs per node.
That’s a tough one. I’m not sure there is a way to do that right now. Probably
something we’d have to add. Out of curiosity, if you have 4 sockets and only 2
procs, would you want each proc bound to 2 of the 4 sockets? Or are you
expecting them to be bound to only 1 socket (thus leaving 2 sockets idle), or
simply leave them unbound?
I have 2 pci devices (gpu) per node. I need 1 proc per socket to be
bound to that socket and "talk" to it's respective gpu, so no matter how
many sockets I have - I must distribute the procs 2 per node, each in
it's own socket (actually, each in it's own numa) and be bound.
So I expect them to be "bound to only 1 socket (thus leaving 2 sockets
idle)".
I might run other jobs on the idle sockets (depending on mem
utilization) but that's not an immediate concern at this time.
Combining with numa/dist to hca/dist to gpu will be very helpful too.
Definitely no way to do this one today.
Thanks,
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