[openib-general] OpenIB SWG Face to Face 9/9 Meeting

[Sean Hefty]

On Fri, 10 Sep 2004 12:31:05 -0400
Hal Rosenstock <halr at voltaire.com> wrote:

> SM support is needed for initial deliverable for those without an
> embedded SM (e.g. back to back HCAs).

During the DevCon, Kevin Deierling (from Mellanox) mentioned that they would port opensm to the gen2 interface once it were defined and ready.

Support for just opensm in user-mode is easier than exporting the hardware capabilities directly to user-mode clients.  It should be noted that additional discussions with Hal, the user-mode MAD API may be slightly different than the kernel-mode API, since zero-copy is not as achievable.

> Initial deliverable is by SuperComputing (mid November) to get IPoIB
> working in an OpenIB stack. This includes mthca (driver), access layer
> (MAD), SMI, SA client API for IPoIB, and IPoIB. (Also, hopefully OpenSM
> although that is not for the kernel).

Delivering code by SuperComputing was requested by Matt to set a specific deadline for the code.  There wasn't a hard requirement for this date, but did seem reasonable.  It requires defining the user-mode MAD API and a minimal query API.  A simple way to join/leave multicast groups may also be desirable.
 

Other notes that I have from the meeting not already mentioned are:

uDAPL was mentioned as being a priority.

Need to define the call context for all calls.

Testing of the stack is going to be based primarily on normal stack usage, with no plans for creating a formal test suite.  Once some additional ULPs (uDAPL/MPI) are available, their tests can be leveraged.

OSU/labs would likely port MPI to the gen2 stack.

The labs expressed interest in diagnostic tools.