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<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>
<BLOCKQUOTE style="MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<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>
<BLOCKQUOTE><SPAN style="FONT-SIZE: 12px"><FONT
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
style="FONT-SIZE: 12px"><FONT
face="Verdana, Helvetica, Arial"><BR></FONT></SPAN></BLOCKQUOTE><SPAN
style="FONT-SIZE: 12px"><FONT
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