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<DIV dir=ltr align=left><SPAN class=594184714-11102007><FONT face=Arial
color=#0000ff size=2>Hello,</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=594184714-11102007><FONT face=Arial
color=#0000ff size=2> As Sean pointed out, the IB connection manager is
the issue; different CM connection protocols between Linux and Windows. The
DAT/DAPL sides, if they could get connected, would have no problems exchanging
messages. Once upon a time, in a land, far, far away....an early MPI/DAPL kludge
was setup such that a TCP/IP socket connection was used to exchange IB Queue
Pair (QP) information then used to link remote QPs; not recommended or supported
in Windows.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=594184714-11102007><FONT face=Arial
color=#0000ff size=2>About 9 months ago Voltaire was slated to start work on a
connected mode IPoIB for Windows (64K MTU); no telemetry since
then.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=594184714-11102007><FONT face=Arial
color=#0000ff size=2>So sadly 2K MTU IPoIB is about the best there is at this
juncture.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=594184714-11102007><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=594184714-11102007><FONT face=Arial
color=#0000ff size=2>stan.</FONT></SPAN></DIV><BR>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> ofw-bounces@lists.openfabrics.org
[mailto:ofw-bounces@lists.openfabrics.org] <B>On Behalf Of </B>Greg
Rodgers<BR><B>Sent:</B> Wednesday, October 10, 2007 6:42 PM<BR><B>To:</B>
ofw@lists.openfabrics.org<BR><B>Subject:</B> [ofw] WinOF interoperable with
Linux OpenIB<BR></FONT><BR></DIV>
<DIV></DIV><BR><BR><FONT face=sans-serif size=2>We would like to link a Windows
machine to a Linux machine with InfiniBand and use DAPL. IPoIB is not fast
enough. On the Linux side we have OFED 1.2 with RHEL 5.1. I
am new to OpenIB but I hear that Windows would have a problem with RDMA cm.
Can anyone give me some high level advice before I get the hardware?
The Windows machine will be Windows 2003 R2 with Mellonox SDR card.
</FONT><BR><BR><FONT face=sans-serif size=2>Thank you. </FONT><BR><BR><FONT
face=sans-serif size=2>Greg Rodgers</FONT></BODY></HTML>