WeeklyTelcon_20160531

Open MPI Weekly Telcon

Wiki: https://github.com/open-mpi/ompi/wiki/Releasev20
Blocker Issues: https://github.com/open-mpi/ompi/issues?utf8=%E2%9C%93&q=is%3Aopen+milestone%3Av2.0.0+label%3Ablocker
Milestones: https://github.com/open-mpi/ompi-release/milestones/v2.0.0
- PR 1174: needs a minor tweak, then we'll put it in
- PR 1199: request revamp
  - Nathan found 2 new issues
    - one thread adds callback while another thread is calling that callback (Nathan working on this right now -- PR probably in the next few hours)
    - PR 1729: minor thread leak in persistent communications leak / callbacks can be lost (very old bug -- dates back to 2005!). Need George PR.
- One more PR coming about XRC fix from NAthan
- Nathan has a 1-line uGNI fix that he'd like to get in -- will send to Howard
- NVIDIA CUDA build failed in MTT: the fix was just merged
Fallout from request overhaul
- How's it look on master?
  - looking good; other than missing CM, we're turning up mostly other genuine threading bugs
  - all PMLs should be good now
  - George would like to fix a few error paths (maybe v2.0.1)
- Is there a consolidated PR for v2.x?
  - Yes: PR 1199

Reminder from last week
- 23 pull requests on master, some since last October. Not TODAY (since we want George's Multithreaded thing in), but should bring them in or kill them.

.mailcap update: everyone please review https://github.com/open-mpi/ompi/pull/1581/files
Jeff to look at Cisco MTT failures

Mellanox: not here
Sandia:
- tracking down bug in rendezvous protocol. Will roll to v2.x -- may have to wait for v2.0.1.
Intel: Added stuff to mpirun:
- --timeout (reminder, in case you didn't know it existed); exits with ETIMEDOUT if timeout expires (110 on Linux / OS X)
- --report-state-on-timeout
- --get-stack-traces
- Added ability to launch N daemons on a node (just for ORTE scale testing; only works with rsh): MCA param ras_base_multiplier. NOT for MPI performance testing! Only for ORTE scale testing.
- Working on PMIx event notification stuff. ULFM comes in after that.
- Going to use OPAL MCA stuff for Warewulf rewrite.