Jeff Squyres <jsquyres <at> cisco.com> writes:
> On Nov 30, 2011, at 6:03 AM, Jaison Paul wrote:
> > Yes, we have set up .ssh file on remote EC2 hosts. Is there anything else
that we should be taking care of when
> dealing with EC2?
> I have heard that Open MPI's TCP latency on EC2 is horrid. I actually talked
with some Amazon / EC2 folks about
> it at SC'11 a few weeks ago; we set a date to dive into it a bit deeper in
> No promises on when/if the TCP latency will improve, but it's definitely
something that we're looking at.
> My first *guess* is that it might have something to do with specifying
> oob_tcp_if_include improperly (or not at all) -- but that's a SWAG.
We are not setting up --mca btl_tcp_if_include / --mca oob_tcp_if_include at all
at the moment. What will be the best setup to access EC2 hosts over internet for
--mca btl_tcp_if_include / --mca oob_tcp_if_include? I dont understand --mca