Present: Bill G, Peter D, Roland H, Atul K, Yosef Z, Gabriele B, Steve B, Leo RW, Miguel G, Maria H, Zach E
Chair: Peter D Minutes: Bill G * Any first business, no takers. * next [https://docs.einsteintoolkit.org/et-docs/Release_Process ET release] [SB, YZ, RH] We do not have anything new this week. Steve and Yosef did meet. A month away from freeze. Gallery example runners lined up. ** status update on include candidates: *** [https://bitbucket.org/einsteintoolkit/tickets/issues/2551/include-reprimand-in-the-et Reprimand] Roland, has not looked at it since last week and cannot until Tuesday the following week. Review by 12th of November the Feature Freeze date. We can add it, but may not be able to compile it...the build system and missing Boost libraries. So will have it off by default. Believe code quality is correct and good. Wolfgang said he would add some dummy documentation so it shows up in the automated thorn docs. Roland will add to the ticket, for example Leo's stand-alone version. Leo, I will try to look at that code. *** [https://bitbucket.org/einsteintoolkit/tickets/issues/2549/inlcude-flrwsolver-in-et FLRWSolver] Helvi has this one and is not in the meeting. Roland, can poke her about this. Part of it uses Python at runtime, links against Python and uses CFFI package which is not in the default Python install. Hayley would port some of these problematic portions to Fortran to help with this. EVen with Python3, you need the build environment Python3-config. Also need the CFFI module which is not default. Steve, do we need a way in Cactus to have an external library, and if pieces are there build it, and if not do not build it. Hopefully this would be automatic. Yosef, should we support old clusters? Only some C++ compilers supported. Seems that Python3 should be available or easily accessible/buildable on most clusters. Steve, Roland has a script that generates a thornlist from a *.par file, maybe more of this should be done. Yosef, maybe add the thornlist to the gallery example. Peter, this has been a topic for a long time...handling the thornlist and the elements that are compiled into the executable. *** [https://bitbucket.org/einsteintoolkit/tickets/issues/2538/inclusion-of-kuibit Kuibit] It is Yosef's to review. Yosef, No updates. Will work on it next week. ** gallery runners All chosen. Need to double check with Helvi about her students. *** [https://bitbucket.org/einsteintoolkit/tickets/issues/2172/test-binary-black-hole-gw150914-example BBH] [?] Helvi's students? *** [https://bitbucket.org/einsteintoolkit/tickets/issues/2176/test-binary-neutron-star-example BNS] [?] Helvi's students? *** [https://bitbucket.org/einsteintoolkit/tickets/issues/2175/test-single-stable-neutron-star-example TOV] [PD] *** [https://bitbucket.org/einsteintoolkit/tickets/issues/2173/test-poisson-equation-example Poisson] [MG] *** [https://bitbucket.org/einsteintoolkit/tickets/issues/2174/test-multi-patch-scalar-wave-equation scalar wave] [BG] Roland, should finish up the Simfactory description for Expanse, ticket #2561. Merge the pull request. Gabriele, current version on Simfactory works but does not scale well. Have older verions using older MPIs. So waiting for Admins to install newer versions. Steve, could use Roland's help for the change for the index for CarpetX. Roland, we need Erik S to look at it. * SPEC benchmark contribution [SB, RH] Steve, Roland we need to change some par files for that. They need instructions for running longer and wider jobs---few minutes and GB memory and other is a nodes worth and runs longer. See Ticket #2470, submit cactuBSSN for SPEC v8 CPU Benchmark, https://bitbucket.org/einsteintoolkit/tickets/issues/2470/submit-cactubssn-for-spec-v8-cpu-benchmark . * LORENE2 as default LORENE thorn in ET [RH] Roland, nothing new from last week. Will put it in the day after the release and see what breaks. * student discussion group about ET [http://lists.einsteintoolkit.org/pipermail/users/2021-October/008220.html email to list] [RH] Peter, Roland sent email back to Nick Olsen. Users self help group for the ET. Nothing new. [https://www.einsteintoolkit.org/tools/unanswered.php unanswered question on mailing list] See Hee Il Kim's thread, no new updates on that. Steve will try to respond more. [https://bitbucket.org/einsteintoolkit/tickets/issues?status=open&status=new&sort=-updated_on open tickets sorted by update time] #2570, update MPI tarball in ExternalLibrary, Roland, had trouble compiling MPI where IB Verbs/Infiniband exists and a newer version of MPI exists. Happens rarely. Not urgent. Peter D, does the MPI compile detect the communication libraries? Roland, think its configure script does that. Our ExternalLibraries method makes it a bit difficult for us. Our build does not always know what the MPI configure would have found to link to. #2554, init_3_timelevels, Roland, no updates. A few weeks ago could reproduce it. Yosef, can I help? Roland, I made your example simpler, smaller grid and few time steps to be able to look at raw data, and single MPI rank. Looking for where the NANs show up and in which location. Seem to show up in ghost and buffer zones at the refinement edge. On time levels not aligned with any coarse time step. So only on timelevel 1 on the fine level. Related to temporal interpolation and not just spatial interpolation. Roland, Yosef if you could verify that that would be helpful. See NANs in timelevel 1 and not time level 2, I expect. Peter, Other tickets to discuss? No. [https://bitbucket.org/einsteintoolkit/tickets/issues?status=new&status=open&sort=-updated_on&q=Please%20review tickets ready for review] #2254, Cactus thorns registration, seem like small request. Roland, yes. And Yosef suggested a bibtex file as well as formaline's YAML file. If someone would give it a try, that would be a good project. #963, Improve McLachlan accuracy, Peter, I have not done anything. #332, Cactus interp environment variables as configure options. Roland, has been ready for review...an enhancement. There is a Pull Request. Needs a reviewer. #2364, opening and closing HDFS5 files, does have pull request and needs someone to review it. * Any update on CarpetX, likely Steve and Roland for reporting. Steve, it basically works. Sam is looking at performance testing. Steve working on running in 2D. Seems to be basically working. Roland, more interested group of post-docs and students meet every Wednesday with Erik and show what they are working on. Want to add hydrodynamics code to it. These are people from RIT, LSU, Milan, Amsterdam. They are making progress. at a stage where people are testing 1D shock in the hydro code. Access on a separate repository, uses Cactus but does not use ET right now. Repo at https://bitbucket.org/eschnett/cactusamrex . * Any other business? None * Chair and Minute taker for next week? 14 Oct: Chair Steve. Minutes Maria. 28 Oct: Chair Roland. Minutes Miguel -- ============================== William Gabella Research Assistant Professor Department of Physics and Astronomy Nashville, TN USA (o) 615-343-2713 _______________________________________________ Users mailing list Users@einsteintoolkit.org http://lists.einsteintoolkit.org/mailman/listinfo/users