Hi Ralph,
Ralph Castain wrote:
...
The man page will describe all the various options. Which one is best
for your app really depends on what the app is doing, the capabilities
and topology of your cluster, etc. A little experimentation can help you
get a feel for when to use which one.
Th
On Feb 21, 2009, at 1:05 AM, Raymond Wan wrote:
Hi Ralph,
Thank you very much for your explanation!
Ralph Castain wrote:
It is a little bit of both:
* historical, because most MPI's default to mapping by slot, and
* performance, because procs that share a node can communicate via
shared
Hi Ralph,
Thank you very much for your explanation!
Ralph Castain wrote:
It is a little bit of both:
* historical, because most MPI's default to mapping by slot, and
* performance, because procs that share a node can communicate via
shared memory, which is faster than sending messages over
It is a little bit of both:
* historical, because most MPI's default to mapping by slot, and
* performance, because procs that share a node can communicate via
shared memory, which is faster than sending messages over an
interconnect, and most apps are communication-bound
If your app is di
