[ewg] RE: Agenda for the OFED meeting today (Jan 5, 09)

[John Russo]

Another suggestion for 1.5

Implementation of SA queries for Path Records (using IBTA 1.2.1 ServiceId field) in all OFED ULPs, especially for MPI
            The IBTA standard defines that the proper way to establish a connection is to get a PathRecord from the SM/SA and use it to define all the attributes of the communication path.
Ideally the IBTA CM should then be used to establish the connection and QPs as well.

At present, openmpi, mvapich1 and mvapich2 do not use PathRecords, but instead hard code attributes like the PKey, SL, etc.
In some cases these hardcoded values can be overridden by configurable values such as PKey and SL, but such values must be uniform across all connections and must be provided per job (which can be error prone/tedious).

            At present opensm supports PKeys and SLs, however MPI cannot easily use these features.
Other features, such as lash routing, in opensm do not work properly with MPI because the SL must be uniform across all connections, but for lash it will vary per route.

Additionally, applications which do not use PathRecords will have difficulties with advanced features like IB routing, partitioning, etc.  All of which are available or being worked on in opensm.

________________________________
From: ewg-bounces at lists.openfabrics.org [mailto:ewg-bounces at lists.openfabrics.org] On Behalf Of Tziporet Koren
Sent: Monday, January 05, 2009 1:00 AM
To: ewg at lists.openfabrics.org
Cc: general at lists.openfabrics.org
Subject: [ewg] Agenda for the OFED meeting today (Jan 5, 09)



Hello all,

I hope we all had nice holidays and vacations, and now it's the time to get back to business.

Agenda for OFED meeting today:

1. Conclusions from OFED 1.4 release: Open discussion

2. Do we wish to have OFED 1.4.: Please send pros & cons before the meeting

3. OFED 1.5: Schedule and features.

This is what we presented in SC08 about 1.5:

Preliminary Schedule:

 *   Feature Freeze: 3/20/09

 *   Alpha Release: 3/20/09

 *   Beta Release: 4/20/09

 *   RC1: 5/5/09

 *   RC2-RCx: About every 2 weeks as needed

 *   Release: June 2009

Features:

 *   Kernel.org: 2.6.28 and 2.6.29

 *   Multiple Event Queues to support Multi-core CPUs

 *   NFS/RDMA - GA

 *   RDS support for iWARP

 *   OpenMPI 1.3

 *   Add support/backports for RedHat EL 5.3 and EL 4.8, SLES 11

 *   Support for Mellanox vNIC (EoIB) and FCoIB with BridgeX device

 *   more TBD...


We also presented the OS matrix but I suggest we will close this in the next meeting.

My proposal:

 *   Have the release in July and not June - so we will have more time for development

 *   Stick to one kernel version base and not change in the middle since we saw that changing the kernel base caused a delay.
We need to decide in the meeting if it is 2.6.29 or we should wait for 2.6.30.

 *   Add IB over Eth - this is similar to iWARP but more like IB (e.g. including UD), and can work over ConnectX.


Please send your suggestions to the list before the meeting if possible

Tziporet

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