Erik, thanks. Do you have any instructions (or simfactory files) to share if I wanted to try compiling and running it on GPUs? I have access to a GPU cluster at CINECA in Italy and I may try running there (each node has 4 x NVIDIA Volta V100 GPUs). The theory group here in Bicocca is also going to buy a server with 4 x NVIDIA A100 GPUs for testing purposes.
I do not have experience with GPUs, but I'm happy to help if needed. Cheers, Bruno Il giorno gio 3 giu 2021 alle ore 15:38 Erik Schnetter < [email protected]> ha scritto: > Bruno > > GPUs are supported and are working fine. A WaveToy is working, but I > haven't tested it in the past weeks. The Einstein equations require > more work to be efficient on GPUs. > > -erik > > On Thu, Jun 3, 2021 at 9:29 AM Bruno Giacomazzo > <[email protected]> wrote: > > > > Roland and Erik, > > thanks a lot for the explanation. I saw the release notes with CUDA > listed in the larger changes and this is why I asked. > > > > Erik, does CarpetX already support GPU via AMReX or is more work needed? > > > > Thanks, > > Bruno > > > > > > Il giorno gio 3 giu 2021 alle ore 14:35 Erik Schnetter < > [email protected]> ha scritto: > >> > >> To my knowledge, the improved support means that it is now possible to > >> mix CUDA and C++ code in the same source files. That is, you can > >> compile C++ code with a CUDA compiler, which will pass on the C++ bits > >> to the regular C++ compiler while extracting the CUDA code. This is > >> merely a technical improvement of the make system that makes it easier > >> to write one version code that can run on both a CPU or a GPU, instead > >> of having to write two separate versions of the code. > >> > >> The real CUDA-related work happened in CarpetX > >> <https://bitbucket.org/eschnett/cactusamrex/>, which is not part of > >> the Einstein Toolkit yet. But we're getting there! > >> > >> -erik > >> > >> On Thu, Jun 3, 2021 at 3:40 AM Bruno Giacomazzo > >> <[email protected]> wrote: > >> > > >> > would it be possible to have a (short) summary of the CUDA support > introduced in the latest release? > >> > > >> > Thanks, > >> > Bruno > >> > > >> > Il giorno gio 3 giu 2021 alle ore 00:15 <[email protected]> > ha scritto: > >> >> > >> >> Hello, > >> >> > >> >> Please consider joining the weekly Einstein Toolkit phone call at > >> >> 9:00 am US central time on Thursdays. For details on how to connect > >> >> and what agenda items are to be discussed, use the link below. > >> >> > >> >> https://docs.einsteintoolkit.org/et-docs/Main_Page#Weekly_Users_Call > >> >> > >> >> --The Maintainers > >> >> _______________________________________________ > >> >> Users mailing list > >> >> [email protected] > >> >> http://lists.einsteintoolkit.org/mailman/listinfo/users > >> > > >> > > >> > > >> > -- > >> > > >> > Prof. Bruno Giacomazzo > >> > Department of Physics > >> > University of Milano-Bicocca > >> > Piazza della Scienza 3 > >> > 20126 Milano > >> > Italy > >> > > >> > email: [email protected] > >> > phone: (+39) 02 6448 2321 > >> > web: http://www.brunogiacomazzo.org > >> > > >> > ---------------------------------------------------------------------- > >> > There are only 10 types of people in the world: > >> > Those who understand binary, and those who don't > >> > ---------------------------------------------------------------------- > >> > > >> > _______________________________________________ > >> > Users mailing list > >> > [email protected] > >> > http://lists.einsteintoolkit.org/mailman/listinfo/users > >> > >> > >> > >> -- > >> Erik Schnetter <[email protected]> > >> http://www.perimeterinstitute.ca/personal/eschnetter/ > > > > > > > > -- > > > > Prof. Bruno Giacomazzo > > Department of Physics > > University of Milano-Bicocca > > Piazza della Scienza 3 > > 20126 Milano > > Italy > > > > email: [email protected] > > phone: (+39) 02 6448 2321 > > web: http://www.brunogiacomazzo.org > > > > ---------------------------------------------------------------------- > > There are only 10 types of people in the world: > > Those who understand binary, and those who don't > > ---------------------------------------------------------------------- > > > > _______________________________________________ > > Users mailing list > > [email protected] > > http://lists.einsteintoolkit.org/mailman/listinfo/users > > > > -- > Erik Schnetter <[email protected]> > http://www.perimeterinstitute.ca/personal/eschnetter/ > -- Prof. Bruno Giacomazzo Department of Physics University of Milano-Bicocca Piazza della Scienza 3 20126 Milano Italy email: [email protected] phone: (+39) 02 6448 2321 web: http://www.brunogiacomazzo.org ---------------------------------------------------------------------- There are only 10 types of people in the world: Those who understand binary, and those who don't ----------------------------------------------------------------------
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