Re: [OMPI devel] SDP support for OPEN-MPI

2008-01-15 Thread Lenny Verkhovsky
> -Original Message- > From: devel-boun...@open-mpi.org [mailto:devel-boun...@open-mpi.org] On > Behalf Of Jeff Squyres > Sent: Tuesday, January 15, 2008 6:13 AM > To: Open MPI Developers > Subject: Re: [OMPI devel] SDP support for OPEN-MPI > > On Jan 13,

Re: [OMPI devel] SDP support for OPEN-MPI

2008-01-14 Thread Jeff Squyres
On Jan 13, 2008, at 8:19 AM, Lenny Verkhovsky wrote: > What I meant was try to open an SDP socket. If it fails because SDP > is not supported / available to that peer, then open a regular > socket. So you should still always have only 1 socket open to a peer > (not 2). Yes, but since the

Re: [OMPI devel] SDP support for OPEN-MPI

2008-01-13 Thread Lenny Verkhovsky
> -Original Message- > From: devel-boun...@open-mpi.org [mailto:devel-boun...@open-mpi.org] On > Behalf Of Jeff Squyres > Sent: Tuesday, January 08, 2008 4:32 PM > To: Open MPI Developers > Subject: Re: [OMPI devel] SDP support for OPEN-MPI > > On Jan 8,

Re: [OMPI devel] SDP support for OPEN-MPI

2008-01-08 Thread Jeff Squyres
On Jan 8, 2008, at 7:45 AM, Lenny Verkhovsky wrote: Hence, if HAVE_DECL_AF_INET_SDP==1 and using AF_INET_SDP fails to that peer, it might be desirable to try to fail over to using AF_INET_something_else. I'm still technically on vacation :-), so I didn't look *too* closely at your patch, but

Re: [OMPI devel] SDP support for OPEN-MPI

2008-01-08 Thread Lenny Verkhovsky
Hi all, Hi, Thanks for the responses. > -Original Message- > From: devel-boun...@open-mpi.org [mailto:devel-boun...@open-mpi.org] On > Behalf Of Jeff Squyres > Sent: Wednesday, January 02, 2008 4:08 AM > To: Open MPI Developers > Subject: Re: [OMPI devel] SDP su

Re: [OMPI devel] SDP support for OPEN-MPI

2008-01-01 Thread Jeff Squyres
On Jan 1, 2008, at 1:11 PM, Andrew Friedley wrote: We would like to add SDP support for OPENMPI. I have a few points -- this is the first: I would do this patch slightly differently. I prefer to have as few #if's as possible, so I'd do it to always have the struct members and logic for

Re: [OMPI devel] SDP support for OPEN-MPI

2008-01-01 Thread Andrew Friedley
Patrick Geoffray wrote: Lenny Verkhovsky wrote: We would like to add SDP support for OPENMPI. SDP can be used to accelerate job start ( oob over sdp ) and IPoIB performance. I fail to see the reason to pollute the TCP btl with IB-specific SDP stuff. For the oob, this is arguable, but

Re: [OMPI devel] SDP support for OPEN-MPI

2008-01-01 Thread Patrick Geoffray
Lenny Verkhovsky wrote: We would like to add SDP support for OPENMPI. SDP can be used to accelerate job start ( oob over sdp ) and IPoIB performance. I fail to see the reason to pollute the TCP btl with IB-specific SDP stuff. For the oob, this is arguable, but doesn't SDP allow for

Re: [OMPI devel] SDP support for OPEN-MPI

2007-12-31 Thread Brian Barrett
Since I used to be the OOB guy, I wanted to throw my $0.02 out there. I think this is the right approach for adding such support. I haven't tested it, but if it works see no reason not to commit. Brian On Dec 31, 2007, at 1:41 AM, Lenny Verkhovsky wrote: Hi, We would like to add SDP

[OMPI devel] SDP support for OPEN-MPI

2007-12-31 Thread Lenny Verkhovsky
Hi, We would like to add SDP support for OPENMPI. SDP - Socket Direct Protocol is a byte-stream transport protocol implementing the TCP SOCK_STREAM semantics utilizing transport offloading capabilities of the InfiniBand fabric (http://www.mellanox.com/pdf/whitepapers/SDP_Whitepaper.pdf,