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<DIV><SPAN class=614144715-25012007><FONT face=Arial color=#0000ff size=2>One
more thing about XP and WSD. Windows XP simply doesn't support WSD and this is
the situation with all windows client machines (xp-32, xp-64 and
vista).</FONT></SPAN></DIV>
<DIV><SPAN class=614144715-25012007><FONT face=Arial color=#0000ff
size=2>Thanks</FONT></SPAN></DIV>
<DIV><SPAN class=614144715-25012007><FONT face=Arial color=#0000ff
size=2>Tzachi</FONT></SPAN></DIV><BR>
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<FONT face=Tahoma size=2><B>From:</B> Erez Cohen
[mailto:erezc@dev.mellanox.co.il] <BR><B>Sent:</B> Thursday, January 25, 2007
5:26 PM<BR><B>To:</B> 'Gábor Forgács'; Tzachi Dar;
openib-windows@openib.org<BR><B>Subject:</B> RE: [Openib-windows] zero copy
transfer for XP<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV><FONT size=2><SPAN class=307211715-25012007><FONT face=Arial
color=#000080>Hi Gabor,</FONT></SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#000080 size=2><SPAN
class=307211715-25012007></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#000080 size=2><SPAN class=307211715-25012007>WSD
and SDP are both socket interface that can run over IB fabric. WSD is
developed under OpenFabrics while SDP is not due to some legal issues (it
is developed by Mellanox). </SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#000080 size=2><SPAN
class=307211715-25012007></SPAN></FONT><FONT face=Arial color=#000080
size=2><SPAN class=307211715-25012007>SDP is included in several packages from
IB vendors, such as Mellanox WinIB package. Please contact a Mellanox
representative to get the latest and most stable version.</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#000080 size=2><SPAN
class=307211715-25012007></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#000080 size=2><SPAN class=307211715-25012007>I'm
not sure what is the status with DAPL, I would not recommend you to use
it.</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#000080 size=2><SPAN
class=307211715-25012007></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#000080 size=2><SPAN class=307211715-25012007>Erez
</SPAN></FONT></DIV><BR>
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<FONT face=Tahoma size=2><B>From:</B> openib-windows-bounces@openib.org
[mailto:openib-windows-bounces@openib.org] <B>On Behalf Of </B>G?bor
Forg?cs<BR><B>Sent:</B> Thursday, January 25, 2007 3:24 PM<BR><B>To:</B>
Tzachi Dar; openib-windows@openib.org<BR><B>Subject:</B> Re:
[Openib-windows] zero copy transfer for XP<BR></FONT><BR></DIV>
<DIV></DIV><FONT face="Verdana, Helvetica, Arial"><SPAN
style="FONT-SIZE: 12px">Hello Tzachi,<BR><BR><BR>Thank you for your answer.
Well that is a good news. Sorry, but I still have some questions.
Could you explain how the SDP relates to the WSD <BR>which does not seem to
work for the XP with the driver 1.0.0.331. I always believed they are the
same. Actually my programs have already been <BR>developed for sdp and udapl
under linux now I would like to port them to windows xp. Does the udapl work
under 32 bit XP ? What about zero copy<BR>with udapl ? Where can I find the
sdk for windows udapl ? I know it is a lot. 8)
<BR><BR><BR>regards,gabor<BR><BR><BR><BR>On 1/24/07 10:40 PM, "Tzachi Dar"
<tzachid@mellanox.co.il> wrote:<BR><BR></SPAN></FONT>
<BLOCKQUOTE><SPAN style="FONT-SIZE: 12px"><FONT color=#0000ff><FONT
face=Arial>For windows XP we do have SDP support.<BR>Actually SDP is being
supported on windows xp / windows server 2003 for their 32 bits version
and their 64 bits version.<BR>Currently our SDP doesn't have zero copy but
standard benchmarks show maximum BW in one direction of
</FONT></FONT><FONT face=Arial><FONT color=#ff0000>1300 MB/sec</FONT><FONT
color=#0000ff> and latency of </FONT><FONT color=#ff0000>7 us</FONT><FONT
color=#0000ff> in Ping-Pong tests.<BR>This numbers have been achieved on
64 bits systems, but even on XP 32 bit systems we were able to measure BW
of more than 1100 MB/sec.<BR>Although this is not zero copy, this BW is
achieved using only one processor, so on a typical machine today that has
more than one core, you can enjoy the BW and still have one (or more)
processors free for doing other work.<BR></FONT></FONT><FONT
face="Verdana, Helvetica, Arial"><BR></FONT><FONT color=#0000ff><FONT
face=Arial>Please note that the performance of SDP as well as stability
have improved since we have last worked with SilverStorm.<BR>I believe
that creating a program with normal socket API, will be much easier than
working with DAPL, and you can have your program ready much
faster.<BR>Currently our SDP supports all major socket API including send,
recv, WSASend, WSARecv, (all completion methods including synchronous,
overlapped , a function call, an event or completion
ports).<BR></FONT></FONT><FONT
face="Verdana, Helvetica, Arial"><BR></FONT><FONT color=#0000ff><FONT
face=Arial>My experience show that the limiting factor for BW is the
memory speed, and with new computers that are shipped today this memory is
high enough for almost any demand. If you want I can send you a program
that will allow you to measure the true performance of your machine and
will give you a good estimation of the BW that you can
achieve.<BR></FONT></FONT><FONT
face="Verdana, Helvetica, Arial"><BR></FONT><FONT color=#0000ff><FONT
face=Arial>Thanks<BR>Tzachi<BR></FONT></FONT></SPAN>
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face="Verdana, Helvetica, Arial"><BR> <BR>
<HR align=center width="100%" SIZE=3>
</FONT><FONT face=Tahoma><B>From:</B> openib-windows-bounces@openib.org
[<A
href="mailto:openib-windows-bounces@openib.org]">mailto:openib-windows-bounces@openib.org]</A>
<B>On Behalf Of </B>Gábor Forgács<BR><B>Sent:</B> Wednesday,
January 24, 2007 7:36 PM<BR><B>To:</B>
openib-windows@openib.org<BR><B>Subject:</B> [Openib-windows] zero
copy transfer for XP<BR></FONT><FONT
face="Verdana, Helvetica, Arial"><BR> <BR>Hello,<BR><BR><BR>I just
joined to the group recently. I can not find basic information
regarding to the windows xp infiniband development.<BR>I can not
find the information if there is any ULP for windows xp with zero
copy support. Could someone help me out ?<BR>I made working the
IPOIB but its speed is quite low under 100 MB/s . Currently I
believe that there is no sdp support <BR>for windows xp only for
the windows 2003 at least that is the information I received from
the silverstorm. Is it correct ?<BR>What would be the way to make
work udapl for windows xp e.g. the dapltest program ? Thank you
for your help.<BR><BR>regards,gabor <BR></FONT></SPAN></BLOCKQUOTE><SPAN
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