WeeklyTelcon_20180130

Open MPI Weekly Telecon

News: Ralph will not be able to work on Open MPI anymore. He will continue to work on PMIx, but not even the Open MPI PMIx merge.
We Need a v3.1 release engineer to help Brian will send email to devel-core
MPI forum is in Portland in over a month.
- Nothing for OMPI Community at this time.
Face2Face -
- Ralph offered to have a brain dump day. Email Brian if interested.
- Current thought is to co-locate PMIx and MPI meeting in Dallas.
- Consensus for Week of March 20-22
- Face to Face - if we set it for the week of March 20-22 we can co-locate PMIx and OMPI
  - Assuming about half day of orte.

Schedule: RC2 posted.
- Looking for feedback, thumbs up or down.
- Will have an RC3 after a few more PRs are pulled in.
Target v3.0.x in PR4715
- Review required.
Will Pull in PR4716
- Issue 4563
  - not seeing on little arm boxes here, Jenkins uses --disable-builtin-atomics.
Comm Spawn - Documentation PR ready or pulled
Issue 4509
- We believe this is closed. Asked Nathan to close.
Issue - hwloc can't handle cuda from a different location
- On Master specifically disabling hwloc cuda.
- External component does NOT disable build, since
4677 - hwloc2 WIP, may need help with.

SCHEDULE:
- RC2 posted last week.
- PMIx v2.1.0 - merge in rc2 or wait for final?
  - Ralph says PMIx v2.1.0 final is this week.
- Please download and test OMPI v3.1.x RC2.
Blocker on v3.1.x
- Waiting on PMIx v2.1.0 final to pull in:
  - PR4605 in there.
- PR4516
- OSC monitoring fix (doesn't build with Portals 4)
  - PR4523
  - waiting review.
- PMIx 2.1 PR4605
  - PR4746
  - Ralph - there is cleanup issue with PMIx 2.1, but we have cleanup issues today
  - Mellanox will help work on this.
- UCX one sided violating PR4688
- Issue 4303
  - Probably just need to build a patch.

Issue Issue4686
- Something going on in there. Possibly atomic related.
- Might need Nathan's attention.
- Mellanox will try to reproduce after reverting atomic change. Timing issue.
Dynamic operations, a TON of sigfaults. All in opal_progress, during ompi_sync_wait multi-credit.
- Something is wrong with atomics. Intercomm_create or Spawn.
- Cisco is tickling the most, and will look at.
- Delayed.
PR4697 Got resolved and merged to master. * Opal Progress change looks good for most interconnects. * TCP performance regression was resolved and merged to master. * Going to PR this into v3.1.x * George has some thoughts with this * Don't have any non-OS wrappers for TLS * Master now checks for Cx11 Can we make it default? * Mac Sierra may/maynot even with _Thread_local * Would be nice if we could require Cx11 for v4.0
Reg-ex expression creation.
- PR4710
- someone created a test and put it in make-check rather than MTT.
- Then made the component static so that don't have to do make install
- Dont think we should be adding tests to make-check
- Question - Is there a Regex library we could use? Reg-ex is hard.
- This is working pretty well, but did add Framework to allow for future components.

Change behavior of opal_check_package
- Brian will send email to devel
- Make it more explicit when it finds issues
Issue Issue4423
When your PR has been accepted into a release branch, please go to the issue, and remove the target of the release branch that it was just merged into. Attempting to automate this in the future.

New Topic - We currently can't write unit tests against components.
- Some way to say "this unit test is against this component".
- Intel went through and did this internally for orte. Already hosted in public domain.
  - Ralph will send link to Brian to take a look.
Python Client can't report back to database.
- https://github.com/open-mpi/mtt/issues/614
- Josh Hursey will look at.