Nifty Tom Mitchell wrote:
On Tue, Jun 09, 2009 at 04:33:51PM +0300, Pavel Shamis (Pasha) wrote:
Open MPI currently needs to have connected fabrics, but maybe that's
something we will like to change in the future, having two separate
rails. (Btw Pasha, will your current work enable this ?)
On Tue, Jun 09, 2009 at 04:33:51PM +0300, Pavel Shamis (Pasha) wrote:
>
>> Open MPI currently needs to have connected fabrics, but maybe that's
>> something we will like to change in the future, having two separate
>> rails. (Btw Pasha, will your current work enable this ?)
> I do not completel
Open MPI currently needs to have connected fabrics, but maybe that's
something we will like to change in the future, having two separate
rails. (Btw Pasha, will your current work enable this ?)
I do not completely understand what do you mean here under two separate
rails ...
Already today you
On Mon, 8 Jun 2009, NiftyOMPI Tom Mitchell wrote:
??? dual rail does double the number of switch ports. If you want to
address switch failure each rail must connect to a different switch.
If you do not want to have isolated fabrics you must have some
additional ports on all switches to connect
Most of the IB protocols used by MPI target a LID. There is no
existing notification path I know of that can replace LID-xyz with
LID-123. The subnet manager might be able to do this but begs
security issues.
Interesting problem.
It is not exactly correct. For migration between port
On 6/8/09, Sylvain Jeaugey wrote:
> Hi Tom,
>
> Yes, there is a goal in mind, and definetly not performance : we are
> working on device failover, i.e when a network adapter or switch fails,
> use the remaining one. We don't intend to improve performance with
> multi-rail (which as you said, will
Hi Tom,
Yes, there is a goal in mind, and definetly not performance : we are
working on device failover, i.e when a network adapter or switch fails,
use the remaining one. We don't intend to improve performance with
multi-rail (which as you said, will not happen unless you have a DDR card
wit
On Fri, Jun 05, 2009 at 09:52:39AM -0400, Jeff Squyres wrote:
>
> See this FAQ entry for a description:
>
> http://www.open-mpi.org/faq/?category=openfabrics#ofa-port-wireup
>
> Right now, there's no way to force a particular connection pattern on
> the openib btl at run-time. The startup s
See this FAQ entry for a description:
http://www.open-mpi.org/faq/?category=openfabrics#ofa-port-wireup
Right now, there's no way to force a particular connection pattern on
the openib btl at run-time. The startup sequence has gotten
sufficiently complicated / muddied over the years tha
Hi all,
I am working on multi-rail IB and I was wondering how connections are
established between ports. I have two hosts, each with 2 ports on a
same IB card, connected to the same switch.
My question is : how ports are connected between them ? Is there a queue
pair between all ports or o
10 matches
Mail list logo
