hkaiser changed the topic of #ste||ar to: STE||AR: Systems Technology, Emergent Parallelism, and Algorithm Research | stellar.cct.lsu.edu | HPX: A cure for performance impaired parallel applications | github.com/STEllAR-GROUP/hpx | Buildbot: http://rostam.cct.lsu.edu/ | Log: http://irclog.cct.lsu.edu/ | GSoC2018: https://wp.me/p4pxJf-k1
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<simbergm> K-ballo: is the util::format syntax described somewhere? is it based off something else which is documented? just came up in a discussion with my gsoc student and couldn't find anything in our repo at least
<jbjnr> simbergm: my guess would be based on boost:format used in logging etc
<heller> i think it is modeled after python's format syntax
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<simbergm> yep, looks like it could be the same as python, I think it was boost-like but it changed recently
<simbergm> thanks
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<github> [hpx] StellarBot pushed 1 new commit to gh-pages: https://git.io/vpoOH
<github> hpx/gh-pages 5c489c0 StellarBot: Updating docs
<simbergm> any ideas on the following: a guy is trying to use hpx on power and examples/tests run ok, but linking to hpx in his project (pkgconfig) leads to illegal instruction before main
<simbergm> seems to be both debug and release
<jbjnr> "illegal instruction before main" - some static object being initialized and dodgy code being present.
<jbjnr> is this on greina?
<jbjnr> I will try building there myself - I need to get power working for summit stuff
<simbergm> yep, greina, it's mathieu
<simbergm> he found a lead, but we'll see if it's the same problem
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<jbjnr> hkaiser: yt?
<hkaiser> here
<jbjnr> hi
<jbjnr> you will present P1017 I presume
<hkaiser> I was planning to, yes
<jbjnr> do you need help?
<hkaiser> but if you're there we do it together
<jbjnr> that's the right answer. thanks
<jbjnr> (I need a reason to go along for my travel request ....)
<hkaiser> sure, any time
<hkaiser> dio you need an email
<hkaiser> ?
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<jbjnr> hkaiser: no informal. just for my own justification
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<K-ballo> simbergm: it's based on python but uses printf format specifiers
<K-ballo> it just maps to printf
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<mbremer> @hkaiser: I'm available whenever. I'll log off if I have to step away
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<hkaiser> mbremer: ok, I'm in skype calls all morning :/
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<nikunj> @hkaiser: You could check all my experimental codes here: https://github.com/NK-Nikunj/GSoC-experimental-codes
<nikunj> apologies for the lack of creativity in deciding names ;)
<hkaiser> nikunj: thanks, I'll have a look
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<github> [hpx] parsa opened pull request #3312: Add conversion of inspect reports to JUnit XML (master...inspect_junit) https://git.io/vpKUU
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<mbremer> @hkaiser: Interested in chatting now?
<hkaiser> mbremer : could you give me a couple more minutes, please?
<hkaiser> mbremer: sorry, crazy day - and tomorrow + wed I will be out as well
<hkaiser> mbremer: the error in the minimal test case is expected as for serializing id_types (and clients for that matter) special serialization handling is required
<mbremer> Oh yeah! No rush, just wanted to see if you still had time today.
<mbremer> Yeah, is it that "bug" that @aserio reported?
<hkaiser> no, it's not a bug and it's unrelated to aserio's problem
<hkaiser> just for serializaing id_types you need to do a two-pass serialization - do you need that?
<mbremer> Not sure...
<mbremer> I also wouldn't mind doing a type of work around like using the local channel, and then putting the channel actions in my submesh client
<mbremer> Because then the messages and channels travel with the submesh, which makes more sense imo
<hkaiser> mbremer: could you explain please (again) what your initial problem was?
<hkaiser> well, yah, that too
<mbremer> Well so when I try to serialize my submesh it was segfaulting.
<mbremer> (It could be an error on my end as well)
<hkaiser> so the error seen in the mini-testcase is different from your initial problem?
<mbremer> Well the errors are the same.
<hkaiser> uhh
<hkaiser> but you said segfault?
<hkaiser> the mini-testcase does not segfault
<mbremer> I'm trying to pin down where exactly the issue is coming from. Basically, once I try to migrate the mesh it crashes.
<mbremer> well the assert gets triggered
<hkaiser> k
<mbremer> sorry, not segfault
<hkaiser> can I reproduce the initial issue?
<mbremer> Like have the code to run?
<mbremer> I can probably set it up on hermoine and just give you permissions?
<hkaiser> mbremer: I'd like to build it on my machine, would that be feasible?
<hkaiser> or do you have 100'eds of dependencies?
<mbremer> Yeah sure!
<mbremer> haha just HPX and a yaml-cpp...
<hkaiser> ok, that's managable
<mbremer> Kk, let me just push my latest version. I'll email you instructions and input files (etc).
<hkaiser> perfect
<hkaiser> mbremer: sorry for all the trouble, it's probably a stupid bug somewhere
<mbremer> No worries! Like I said, it could still be something on my end, but I would have expected it to at least migrate the mesh and then blow up
<mbremer> Here this will probably take a few minutes to package up nicely
<hkaiser> mbremer: sure, just let me know
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<heller> hkaiser: mbremer: serializing id_type should just work (tm)
<heller> Migrating a channel might be the challenge there. Especially since the migrate test is a bit unstable
<mbremer> @heller: Here is what we were talking about earlier. https://github.com/bremerm31/hpx_mwe/blob/master/src/main.cpp
<mbremer> So this should just work (tm) ?
<mbremer> @hkaiser: sorry something weird is happening with our student cluster atm. I'm going to port to stampede2 just to make sure I'm not sending you garbage
<heller> mbremer: I see. Would have to check with the channel serialization code... Not sure right now
<hkaiser> heller: this fails as it serializes an id_type
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<mbremer_> @hkaiser: sent I also have a stack trace from the address sanitizer. I am a little confused by the stack trace because it looks like there are two traces
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<mbremer_> At anyrate, I'm going to run home/grab dinner and then I'll hop back on irc. (Probably what I'll do is run the code without any channels, and make sure that the serialization is working
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