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Matt Schramm Ph.D

@mattschramm.bsky.social
49 followers 51 following 56 posts

Eviden's HPC and AI Applications Engineer (one of Nimbix's unicorns) Interested in: CFD DEM High Performance Computing Programming - C/C++, Fortran, MPI, Python

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Matt Schramm Ph.D @mattschramm.bsky.social · 02/10/2026
Looks like opencourant.org is where you can find the source. Still don't know if all of the models were saved.
opencourant.org
OpenCourant
What happened to OpenRadioss? On October 1, 2026, Siemens discontinued the OpenRadioss project. The website was retired and the GitHub repository — home to four years of community-driven development o...
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Matt Schramm Ph.D @mattschramm.bsky.social · 01/10/2026
By chance, did anyone scrape the openradioss site before Siemens nuked it? Source files, documentation, example models?
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Matt Schramm Ph.D @mattschramm.bsky.social · 18/12/2025
Thank you windows for the message...
A window's pop-up message with title bar: Setup that reads;
Setup has detected that Setup is currently running.

Please close all instances of it now, then click OK to continue, or Cancel to exit.
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Matt Schramm Ph.D @mattschramm.bsky.social · 13/12/2025
I just completed all 12 days of Advent of Code 2025! #AdventOfCode adventofcode.com Another great year of puzzles.
adventofcode.com
Advent of Code 2025
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Matt Schramm Ph.D @mattschramm.bsky.social · 12/11/2025
Central Iowa
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Matt Schramm Ph.D @mattschramm.bsky.social · 22/08/2025
As someone with multiple cards currently on the reserve list (dual lands, wheels, and way too many forks), destroy the reserve list and reprint them all.
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Matt Schramm Ph.D @mattschramm.bsky.social · 12/03/2025
Another option, though I am biased: github.com/nimbix/jarvi...
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Reposted by Matt Schramm Ph.D
Jana Shen Lab @janashenlab.bsky.social · 15/02/2025
Breaking from JCC: GROMACS reaches a new height in #HPC scalability! @mpibp.bsky.social @mpi-nat.bsky.social onlinelibrary.wiley.com/doi/full/10....
onlinelibrary.wiley.com
Scaling of the GROMACS Molecular Dynamics Code to 65k CPU Cores on an HPC Cluster
We benchmarked the performance of the GROMACS 2024 molecular dynamics (MD) code on a modern high-performance computing (HPC) cluster with AMD CPUs on up to 65,536 CPU cores with input systems ranging...
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Matt Schramm Ph.D @mattschramm.bsky.social · 18/01/2025
Microsoft word
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Matt Schramm Ph.D @mattschramm.bsky.social · 17/01/2025
Like this?
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Matt Schramm Ph.D @mattschramm.bsky.social · 14/01/2025
Ok. Not as bad as I was fearing. Looks like the installation size is ~130 GB. Looks like the podman build was just scaring me and double counting the installation.
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Matt Schramm Ph.D @mattschramm.bsky.social · 14/01/2025
Getting the initial base image built right now. Looking like it will be ~230GB in size.
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Matt Schramm Ph.D @mattschramm.bsky.social · 14/01/2025
I download the DVD ISOs from the Ansys website to build the applications. No idea if you can get physical disks.
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Matt Schramm Ph.D @mattschramm.bsky.social · 14/01/2025
I have some good news and some bad news for my #HPC friends. Ansys 2025 R1 is now available.... Bad news is that it is now twice the size of 2024 R2 (looking at the number of DVD ISOs compared to last release). Best of luck to everyone...
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Matt Schramm Ph.D @mattschramm.bsky.social · 07/01/2025
I will need to look into this... How does load balancing and ghost cell/atoms work?
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Matt Schramm Ph.D @mattschramm.bsky.social · 02/01/2025
Happy New Year everyone. Remember to update all of your copyright notices from 2024 to 2025...
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Matt Schramm Ph.D @mattschramm.bsky.social · 01/01/2025
I didn't need that reminder... Lol
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Matt Schramm Ph.D @mattschramm.bsky.social · 30/12/2024
Guess his LLM is becoming too negative...
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Matt Schramm Ph.D @mattschramm.bsky.social · 28/12/2024
I really don't need another botnet device mining crypto...
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Matt Schramm Ph.D @mattschramm.bsky.social · 26/12/2024
Looks like OpenFOAM gave us a Christmas present... Time to get this release available to our users.
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Matt Schramm Ph.D @mattschramm.bsky.social · 22/12/2024
Once I submitted my answer, I went back and converted the four numbers into signed chars and then packed the signed chars into an int...
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Matt Schramm Ph.D @mattschramm.bsky.social · 22/12/2024
Today's #AOC made me do something I'm not too proud of... Needed a hashmap but I wanted to use 4 it's as the key... There is no hash for arrays, so I converted the four numbers into a string...
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Matt Schramm Ph.D @mattschramm.bsky.social · 21/12/2024
The only time I use chrome now is for my Team meetings. Also, PiHole FTW.
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Matt Schramm Ph.D @mattschramm.bsky.social · 14/12/2024
Well, day 14 part 2 of #AOC was something... Good luck LLMs...
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Matt Schramm Ph.D @mattschramm.bsky.social · 13/12/2024
Cat stares at Christmas tree.
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Matt Schramm Ph.D @mattschramm.bsky.social · 11/12/2024
The Linux kernel is being updated to allow 4096 cores... www.phoronix.com/news/Perf-Su...
phoronix.com
Perf Support For 2,048 CPU Cores Is Becoming Not Enough - Patches Bump Kernel Limit
Currently the Linux kernel's 'perf' performance monitoring subsystem has a limit on 2,048 CPU cores for its CPU map that is set by the MAX_NR_CPUS value
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Matt Schramm Ph.D @mattschramm.bsky.social · 09/12/2024
Do you know if there is a section of video that goes into any updates associated with their EFA network?
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Matt Schramm Ph.D @mattschramm.bsky.social · 06/12/2024
It is not... But the benchmark uses a spack recipe to create the executable. And a bash/python script is used to create the dat file. I stick to creating as square of a parameter space as possible and not just maxing the flops as I care more about relative performance between clusters.
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Matt Schramm Ph.D @mattschramm.bsky.social · 06/12/2024
My question would be, why are you doing this? Are you looking for relative performance between systems? Or are you just looking for a big number? I do have a hpl benchmark that has to be portable for all of our clusters.
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Matt Schramm Ph.D @mattschramm.bsky.social · 01/12/2024
So, a friend and my wife are also trying to save Christmas. My friend is kicking the rust off of their Python... While my wife decided to do it in Excel and got both stars... #AOC
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Matt Schramm Ph.D @mattschramm.bsky.social · 01/12/2024
Got the tree up. #caturday
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Matt Schramm Ph.D @mattschramm.bsky.social · 01/12/2024
Who else is going to be helping to save Christmas this year? #AOC
Countdown to the start of Advent of Code
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Matt Schramm Ph.D @mattschramm.bsky.social · 30/11/2024
Mostly HPC related posts with the occasional cat pic.
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Matt Schramm Ph.D @mattschramm.bsky.social · 30/11/2024
👀
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Matt Schramm Ph.D @mattschramm.bsky.social · 27/11/2024
We do something like this. As an example, we may split up a 16 core 4 GPU machine into 4 4 core 1 GPU machines.
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Matt Schramm Ph.D @mattschramm.bsky.social · 25/11/2024
Is there a max layer size option in Docker... I'm ok if I lose some image efficiency... #HPC #PODMAN #DOCKER
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Matt Schramm Ph.D @mattschramm.bsky.social · 24/11/2024
What was the benchmark used? I don't recognize it...
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Matt Schramm Ph.D @mattschramm.bsky.social · 21/11/2024
Anyone want to guess when I lost Internet and when it came back?
PiHole graph showing the number of total queries and client activity over a 24 hour window.
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Matt Schramm Ph.D @mattschramm.bsky.social · 15/11/2024
It looks like wrf and wps are already part of #spack. May look into adding wrfda if I have the time.
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Matt Schramm Ph.D @mattschramm.bsky.social · 15/11/2024
Well, they didn't send us any of these to test (play) with...
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Matt Schramm Ph.D @mattschramm.bsky.social · 13/11/2024
Welcome to the party
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Matt Schramm Ph.D @mattschramm.bsky.social · 12/11/2024
Hello #HPC, I have put together a gist that contains the steps that I (mostly) took to build WRF, WRFDA, and WPS. Please let me know if you experience any issues with the steps taken. Looking forward to seeing how we use this at the EVIDEN both at #SC24. gist.github.com/schrummy14/6...
gist.github.com
Installing WRF, WRFDA, and WPS on Rocky Linux 9
Installing WRF, WRFDA, and WPS on Rocky Linux 9. GitHub Gist: instantly share code, notes, and snippets.
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Matt Schramm Ph.D @mattschramm.bsky.social · 12/11/2024
I haven't walked through a full example yet, but I do see the 44 executables.
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Matt Schramm Ph.D @mattschramm.bsky.social · 12/11/2024
Not a specific guide but I did find enough forum posts that I was able to find a working combination.
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Matt Schramm Ph.D @mattschramm.bsky.social · 11/11/2024
Well, after another day of trial and error, I got WRFDA working on Rocky Linux 9. That was a fun experience. Fingers crossed that we finish the demo for #SC24.
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Matt Schramm Ph.D @mattschramm.bsky.social · 09/11/2024
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Matt Schramm Ph.D @mattschramm.bsky.social · 08/11/2024
Is there a WRFDA compilation guide out there somewhere that someone not in the weather prediction scene can access? My sanity can only last so long when trying to read WRF's configuration and compilation code on their github... #HPC
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Matt Schramm Ph.D @mattschramm.bsky.social · 04/11/2024
My cats have not been happy with me today.... #blameDST
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Matt Schramm Ph.D @mattschramm.bsky.social · 02/11/2024
#caturday
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Matt Schramm Ph.D @mattschramm.bsky.social · 02/11/2024
Don't want to worry about large function inputs that will change as you add new features? Try this simple trick...🥲
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