[ofw] some WinOF questions

[Smith, Stan]

> Am I wrong? Is there some way I can use SDP in WinOF? How can I do
> that? 

Microsoft requires those who distribute SDP to sign a license with MS
concerning IP rights of SDP.
Since WinOF is open-source MS has declined to offer an SDP licensing
option, therefore SDP is not part of WinOF (Windows OpenFabrics which is
based on the openib-windows src tree).

On the other hand, Mellanox has signed a licensing agreement with MS and
therefore distributes SDP as part of their WinIB stack which is also
based on the openIB-windows src plus Mellanox value add.

The WinOF answer to missing SDP is WSD (Winsock Direct Provider) which
from the user's perspective provides similar utilization of InfiniBand
hardware as does SDP.

Within the Linux world, connected mode IPoIB approaches or in some cases
surpasses SDP performance.
Connected mode IPoIB is appearing on the WinOF 2008 horizon.

Stan.


Diego Guella wrote:
> Sean, Stanley, Tzachi, thanks for your answers.
> 
> I had downloaded WinIB 1.3 from Mellanox website, and installed on my
> Dell Dimension 9100 with a MHES14-XTC and Windows XP.
> I powered up my Dell PowerEdge 2850 with a MHGA28-XTC, SUSE 9.3 and
> OFED 1.1 (including OpenSM).
> The two systems are connected back-to-back each other.
> 
> After configuring the IP addresses, IPoIB works fine (tried ping,
> VNC). 
> 
> 
> I then uninstalled WinIB and installed WinOF 1.0: same situation,
> IPoIB works fine as before.
> However, in WinIB 1.3 installation there were two options that are
> missing in WinOF 1.0: for installing SDP and for install SDK.
> 
> 
> 
> My next step is to write a simple benchmark program that sends some
> data in both directions.
> I would try it using IPoIB and SDP.
> In WinIB 1.3 there were a "SDP" directory in the WinIB installation
> dir, a README instructing how to make a program use SDP.
> These are missing in WinOF, so it seems SDP is not present.
> 
> 
> Am I wrong? Is there some way I can use SDP in WinOF? How can I do
> that? 
> 
> 
> 
> Thanks,
> Diego
> 
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