AMReX Astrophysics Suite

Led by @argonne's Salman Habib, @exascaleproject's ExaSky project has been working to prepare the HACC and Nyx cosmological simulation codes for @doescience's #exascale supercomputers to help advance our understanding of dark matter and dark energy. exascaleproject.org/exploring-the-…

Hi @kernhendricks! Thanks for the shout-out for #Summit @OLCFGOV! But... Summit has never been used to "model nuclear weapons blasts." Never will be. We do love thermonuclear explosions, but we like them on neutron stars and white dwarfs. e.g. @Michael_Zingale #OpenScience

@LBNLcs @BerkeleyLab @luc_vay @axccl @exascaleproject @TheOfficialACM @LBNLatap @NERSC @OLCFGOV @doescience @CEA_France congrats to the WarpX folks for the Gordon Bell award!!

Congrats 🎉 @BerkeleyLab's @luc_vay, @axccl & @exascaleproject's Warp-X team on winning @TheOfficialACM's Gordon Bell prize! About their work: bit.ly/GBFinalists Podcast about #HPC contributions: bit.ly/WarpXecp @LBNLatap @NERSC @OLCFGOV @doescience @CEA_France

Our latest paper on coupling hydrodynamics and reactions is now out: iopscience.iop.org/article/10.384…

Castro Fortran -> C++ conversion (percentage vs year.month)

What's #DarkMatter matter made of? Nobody knows. But new research from @BerkeleyLab scientists, supported by @NERSC #HPC, narrows the search for the axion particle, a promising candidate. Read: bit.ly/AxionDM @doescience @ENERGY @AmrexAstro @LBNLphysics #astrophysics

The 22.07 version of our AMReX-Astro were just tagged. New for the Microphysics suite is 2 additional screening formulations for nuclear reactions, based on Chugunov 2007 and 2009. Also some fixes for ROCm 5.x.

Castro 22.06 has been released: github.com/AMReX-Astro/Ca…

Two AMReX Astro talks at the JINA Frontiers Meeting this week: Eric Johnson talking about X-ray bursts with Castro and Alex Smith Clark talking about our reaction network infrastructure with pynucastro + Castro/C++ generation.

Castro 22.05 has been released github.com/AMReX-Astro/Ca… A cool new feature is that we now dynamically adjust the tile size in hydro when offloading to GPUs to reduce the memory size of temporaries (helps prevent oversubscription of GPU memory)

Our Castro GPU performance at @OLCFGOV summit keeps improving

Science @NERSC: Berkeley Lab Computing Resources Enable Deeper Understanding of Supernovae Explosions nersc.gov/news-publicati… via @NERSC

of course, all of this runs on GPUs as well, with both Castro and MAESTROeX.

this is one of the nice things enabled by our conversion from Fortran to C++ (since Fortran at the moment, doesn't have the equivalent generic programming constructs).

just merged: we now use C++ templating and constexpr-if to generate our nuclear reaction networks at _compile time_, from a simple set of meta-data amrex-astro.github.io/Microphysics/d…

@sanjanacurtis @Michael_Zingale if you don’t have a mug have you even used Castro?

Castro 22.02 has been released: github.com/AMReX-Astro/Ca… Castro now runs on AMD GPUs using ROCm (>= 4.5) + HIP (in addition to NVIDIA GPUs with CUDA). We are continuing to optimize our performance on AMD GPUs.