MHD Debugging I found and fixed the last hydro but in my MHD code this week. There was a yid-1 when it should have been zid-1 in the PCM reconstruction function. After that fix, and thorough testi...

International High Performance Computing Summer School (IHPCSS) I spend most of this week prepping for the IHPCSS. I made a poster that you can find in this post. V1835 Aql I reviewed a late dra...

Welcome! You can download my IHPCSS Poster here or viewed below. If you’ve found your way here hopefully it’s because you want to learn more about me, my research, Cholla, or the details of imple...

MHD Debugging With some help I found a major bug. Several indices had a * instead of + when calculating the shift based on the number of passive scalars. After fixing that the constant, no magneti...

Committee Meeting I had my second committee meeting this week and it went well. The committee had good suggestions on what to do next and so I’m going to work on that. MHD Debugging I started di...

Second Committee Meeting Prep I made the presentation, practiced it with observers, and iterated it from there. MHD Debugging I decided to start debugging with just a constant set of initial con...

Second Committee Meeting Prep I researched, wrote, cited, and made figures for committee meeting report. I also started on the presentation but have not completed it yet. Reading Ntormoussi e...

MHD Debugging Fixed some bugs in the divergence checking code and improved output formatting Fixed some bugs and formatting in the plotting code and tried a parallel version that turned out t...

GPU Resident Reduction I finished the GPU resident reduction and submitted a pull request for it. The issue with slightly different results from last week turned out to be because I had forgotten ...

GPU Resident Reduction This week I implemented a GPU resident parallel reduction for Cholla as described in this NVIDIA blog post. Performance is similar to current reductions that we use but inst...