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/ | GSoC: https://github.com/STEllAR-GROUP/hpx/wiki/Google-Summer-of-Code-%28GSoC%29-2020
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<hkaiser> all: PMC meeting this morning at 9am CDT: https://lsu.zoom.us/j/335605227
<ms[m]> hkaiser: kokkos meeting now if you have time
<hkaiser> yes, sec
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<parsa> kale[m]: ping
<kale[m]> Yes parsa
<parsa> kale[m]: any updates on the GSoC blog post text?
<hkaiser> heller1: yt?
<kale[m]> parsa: I've sent the mail containing blog and brief of work done in the period to patrick
<parsa> kale[m]: great! many thanks
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<nanmiao11> I am wondering what is the command for setting 2 localities to run a test? I used "mpirun -np 2 test_name test_arguments" But still only one locality is set up.
<hkaiser> nanmiao11: do you have hpx configured with the MPI parcelport enabled?
<nanmiao11> Yes, its on
<hkaiser> on rostam?
<nanmiao11> No, on my local computer
<hkaiser> this should run 2 localities on the same computer
<hkaiser> what does mpirun -np 2distributed_hello_world print?
<hkaiser> hello_world_distributed, that is
<nanmiao11> Do I need to build it first? Is it in the build folder?
<hkaiser> it's a HPX example
<hkaiser> should be built by default, if not - build it explicitly
<nanmiao11> It shows: Invalid MIT-MAGIC-COOKIE-1 key--------------------------------------------------------------------------mpirun was unable to find the specified executable file, and thereforedid not launch the job. This error was first reported for processrank 0; it may have occurred for other processes as well.NOTE: A common cause for this error is
<nanmiao11> misspelling a mpirun command line parameter option (remember that mpirun interprets the first unrecognized command line token as the executable).Node: jiujiuExecutable: hello_world_distributed--------------------------------------------------------------------------2 total processes failed to start
<hkaiser> make hello_world_distributed_exe of similar (make --help will give you the list of existing targets)
<hkaiser> what's your command line?
<nanmiao11> mpirun -np 2 hello_world_distributed
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<hkaiser> the example should be in <builddir>/bin/ or <installdir>/bin/
<nanmiao11> of HPX right?
<hkaiser> yes
<hkaiser> run it without mpirun first, i.e. ./hello_worl_distributed
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<diehlpk_work> Please find our blog post about the amazing work kale[m] gonidelis[m] did
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<nanmiao11> hkaiser I did not enable the example on in hpx, so I did not find the test. I rebuild hpx again. I put the result of testing hello_world_distributed in https://gist.github.com/NanmiaoWu/b7f5f3287e9564762cd8f4db9cb3052c
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<hkaiser> nammiao11: are you sure you have the mpi parcelport enabled?
<nanmiao11> It seems like only one locality working
<hkaiser> no you get two instances, each thinking it;s locality 0
<nanmiao11> Let me check my scripts
<hkaiser> please run the hello_world with --hpx:info
<hkaiser> and/or --hpx:version
<hkaiser> (don't remember which is which)
<hkaiser> --hpx:version
<hkaiser> you forgot the '--'
<nanmiao11> ahh sorrt
<nanmiao11> the first comment
<nanmiao11> I did enable mpi on in phylanx, but not enable mpi on in hpx...
<nanmiao11> I guess that is the reason?
<hkaiser> right
<nanmiao11> woops. will build them again.
<nanmiao11> Thanks!
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