> the lockup in hpx::register_with_basename() is back for me. The > attached code (slightly modified from the previous example) deadlocks > on my notebook every time (10/10 tries). > > Any idea on how to fix this? Thomas suggested previously that > prefixing basenames with "/0" would fix the deadlock, but now it's > actually making the deadlock worse (from 30% deadlocks up to 100%).
Perfect. This might be reproducible for me now. I'll try asap. Regards Hartmut --------------- http://boost-spirit.com http://stellar.cct.lsu.edu > > Cheers > -Andreas > > > On 08:35 Tue 15 Sep , Andreas Schäfer wrote: > > Dear all, > > > > I've been debugging a deadlock in LibGeoDecomp's HPX backend. Attached > > is a minimal program which reproduces the deadlock (8/10 runs won't > > terminate), but comes without any LibGeoDecomp-specific ballast.Does > > the code deadlock for anyone else besides me? Is it expected to lock > > up? > > > > I've been using HPX master (a1778309a559d866bc48e4b8a8edfb47982a7225) > > together with OpenMPI 1.8.8. Please find an execution log below: > > > > > gentryx@neuromancer ~ $ g++-4.9.3 -O3 -march=native test.cpp - > std=c++14 -o test -Ilocal_install/include/ - > Ilocal_install/include/hpx/external -Llocal_install/lib -lhpx -lhpx_init - > lboost_program_options -lboost_system -lboost_thread > > > gentryx@neuromancer ~ $ LD_LIBRARY_PATH=local_install/lib mpirun -np 4 > ./test > > > registration: HPXSimulatorUpdateGroupSdfafafasdasd/PatchLink/1-0 > > > registration: HPXSimulatorUpdateGroupSdfafafasdasd/PatchLink/2-0 > > > registration: HPXSimulatorUpdateGroupSdfafafasdasd/PatchLink/0-1 > > > registration: HPXSimulatorUpdateGroupSdfafafasdasd/PatchLink/0-2 > > > registration: HPXSimulatorUpdateGroupSdfafafasdasd/PatchLink/0-3 > > > registration: HPXSimulatorUpdateGroupSdfafafasdasd/PatchLink/3-0 > > > registration: HPXSimulatorUpdateGroupSdfafafasdasd/PatchLink/1-3 > > > registration: HPXSimulatorUpdateGroupSdfafafasdasd/PatchLink/2-1 > > > registration: HPXSimulatorUpdateGroupSdfafafasdasd/PatchLink/3-1 > > > lookup: HPXSimulatorUpdateGroupSdfafafasdasd/PatchLink/0-1 > > > registration: HPXSimulatorUpdateGroupSdfafafasdasd/PatchLink/1-2 > > > lookup: HPXSimulatorUpdateGroupSdfafafasdasd/PatchLink/0-2 > > > registration: HPXSimulatorUpdateGroupSdfafafasdasd/PatchLink/2-3 > > > registration: HPXSimulatorUpdateGroupSdfafafasdasd/PatchLink/3-2 > > > lookup: HPXSimulatorUpdateGroupSdfafafasdasd/PatchLink/0-3 > > > lookup: HPXSimulatorUpdateGroupSdfafafasdasd/PatchLink/1-0 > > > lookup: HPXSimulatorUpdateGroupSdfafafasdasd/PatchLink/3-0 > > > all done 0 > > > lookup: HPXSimulatorUpdateGroupSdfafafasdasd/PatchLink/3-1 > > > lookup: HPXSimulatorUpdateGroupSdfafafasdasd/PatchLink/3-2 > > > all done 3 > > > lookup: HPXSimulatorUpdateGroupSdfafafasdasd/PatchLink/2-0 > > > lookup: HPXSimulatorUpdateGroupSdfafafasdasd/PatchLink/1-2 > > > lookup: HPXSimulatorUpdateGroupSdfafafasdasd/PatchLink/1-3 > > > all done 1 > > > lookup: HPXSimulatorUpdateGroupSdfafafasdasd/PatchLink/2-1 > > > lookup: HPXSimulatorUpdateGroupSdfafafasdasd/PatchLink/2-3 > > > all done 2 > > > ^C > > > > Thanks! > > -Andreas > > > > > > -- > > ========================================================== > > Andreas Schäfer > > HPC and Grid Computing > > Department of Computer Science 3 > > Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany > > +49 9131 85-27910 > > PGP/GPG key via keyserver > > http://www.libgeodecomp.org > > ========================================================== > > > > (\___/) > > (+'.'+) > > (")_(") > > This is Bunny. Copy and paste Bunny into your > > signature to help him gain world domination! > > > #include <hpx/lcos/broadcast.hpp> > > #include <hpx/lcos/local/receive_buffer.hpp> > > #include <hpx/runtime/get_ptr.hpp> > > #include <hpx/hpx_init.hpp> > > #include <hpx/hpx.hpp> > > #include <iostream> > > #include <boost/shared_ptr.hpp> > > #include <vector> > > > > static std::string itoa(int i) > > { > > std::stringstream buf; > > buf << i; > > return buf.str(); > > } > > > > struct test_server > > : hpx::components::simple_component_base<test_server> > > { > > test_server() > > {} > > > > hpx::id_type call() const > > { > > return hpx::find_here(); > > } > > HPX_DEFINE_COMPONENT_ACTION(test_server, call, call_action); > > }; > > > > typedef hpx::components::simple_component<test_server> server_type; > > HPX_REGISTER_COMPONENT(server_type, test_server); > > > > typedef test_server::call_action call_action; > > HPX_REGISTER_ACTION(call_action); > > > > std::string genName(int source, int target) > > { > > std::string basename = "HPXSimulatorUpdateGroupSdfafafasdasd"; > > > > return basename + "/PatchLink/" + > > itoa(source) + "-" + > > itoa(target); > > } > > > > void testBar() > > { > > int rank = hpx::get_locality_id(); > > > > std::vector<hpx::id_type> boundingBoxReceivers; > > std::vector<hpx::id_type> boundingBoxAccepters; > > for (int i = 0; i < 4; ++i) { > > if (i == rank) > > continue; > > > > std::string name = genName(i, rank); > > std::cout << "registration: " << name << "\n"; > > > > hpx::id_type id = > hpx::new_<test_server>(hpx::find_here()).get(); > > hpx::register_with_basename(name, id, 0).get(); > > boundingBoxReceivers.push_back(id); > > } > > > > for (int i = 0; i < 4; ++i) { > > if (i == rank) > > continue; > > > > std::string name = genName(rank, i); > > std::cout << "lookup: " << name << "\n"; > > std::vector<hpx::future<hpx::id_type> > ids = > hpx::find_all_from_basename(name, 1); > > boundingBoxAccepters.push_back(std::move(ids[0].get())); > > } > > > > std::cout << "all done " << rank << "\n"; > > } > > > > int hpx_main(int argc, char **argv) > > { > > testBar(); > > return hpx::finalize(); > > } > > > > int main(int argc, char **argv) > > { > > // We want HPX to run hpx_main() on all localities to avoid the > > // initial overhead caused by broadcasting the work from one to > > // all other localities: > > std::vector<std::string> config(1, "hpx.run_hpx_main!=1"); > > > > return hpx::init(argc, argv, config); > > } > > > > > > _______________________________________________ > > hpx-users mailing list > > [email protected] > > https://mail.cct.lsu.edu/mailman/listinfo/hpx-users > > > -- > ========================================================== > Andreas Schäfer > HPC and Grid Computing > Department of Computer Science 3 > Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany > +49 9131 85-27910 > PGP/GPG key via keyserver > http://www.libgeodecomp.org > ========================================================== > > (\___/) > (+'.'+) > (")_(") > This is Bunny. Copy and paste Bunny into your > signature to help him gain world domination! _______________________________________________ hpx-users mailing list [email protected] https://mail.cct.lsu.edu/mailman/listinfo/hpx-users
