Enable the PMIx notification callback system and fix debugger attach

[rhc54]

This currently is only supported by the pmix120 component, which is not selected by default. All other components will ignore error registration requests, and thus do not support debugger attach when launched via mpirun. Note that direct launched applications will support such attachment, but may not do so in a scalable fashion.

Fixes ##1225

[rhc54]

@jsquyres @ggouaillardet @hjelmn @hppritcha Can someone please verify that this solves the debugger attach at launch problem?

[jsquyres]

@rhc54 Did this not work?

[rhc54]

@jsquyres I think I accidentally deleted the branch and then immediately restored it. It should work, but I was asking that you test it with a debugger

[jsquyres]

I actually don't have Totalview. :-(

I can confirm that this still works for DDT, though.

@hppritcha Do you have Totalview? Or should we ask our friends at TV to test for us?

[hppritcha]

I will give this a try on one of the LANL clusters today.

Am 15.02.2016 um 13:02 schrieb Jeff Squyres [email protected]:

I actually don't have Totalview. :-(

I can confirm that this still works for DDT, though.

@hppritcha Do you have Totalview? Or should we ask our friends at TV to test for us?

—
Reply to this email directly or view it on GitHub.

[hppritcha]

I did try to run with totalview yesterday - and thought I'd posted here. I hit a bunch of issues almost certainly not related to this PR. I'd say go ahead and check this in (after rebase). @hjelmn and I will check to see whether we have a site specific issue with our totalview install.

[hppritcha]

Nathan and I worked more on this today. Things look good with ddt. unfortunately, with totalveiw things still don't seem to work. We get this error when trying to use the mpirun --debug option:
[mu0116.localdomain:30800] CALLING NOTIFY ERROR

[hjelmn]

Asked @rhc54 about the message and he indicated it is a stale debug message. Should be cleaned out.