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Matt Schramm Ph.D

@mattschramm.bsky.social

43 followers 50 following 51 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 · Aug 22

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.

Matt Schramm Ph.D @mattschramm.bsky.social · Mar 12

Another option, though I am biased:
github.com/nimbix/jarvi...

Reposted by Matt Schramm Ph.D

Jana Shen Lab @janashenlab.bsky.social · Feb 15

Breaking from JCC: GROMACS reaches a new height in #HPC scalability! @mpibp.bsky.social @mpi-nat.bsky.social onlinelibrary.wiley.com/doi/full/10....

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...

onlinelibrary.wiley.com

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Matt Schramm Ph.D @mattschramm.bsky.social · Jan 18

Microsoft word

Matt Schramm Ph.D @mattschramm.bsky.social · Jan 17

Like this?

Matt Schramm Ph.D @mattschramm.bsky.social · Jan 14

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.

Matt Schramm Ph.D @mattschramm.bsky.social · Jan 14

Getting the initial base image built right now.
Looking like it will be ~230GB in size.

Matt Schramm Ph.D @mattschramm.bsky.social · Jan 14

I download the DVD ISOs from the Ansys website to build the applications.
No idea if you can get physical disks.

Matt Schramm Ph.D @mattschramm.bsky.social · Jan 14

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 · Jan 7

I will need to look into this...
How does load balancing and ghost cell/atoms work?

Matt Schramm Ph.D @mattschramm.bsky.social · Jan 2

Happy New Year everyone.

Remember to update all of your copyright notices from 2024 to 2025...

Matt Schramm Ph.D @mattschramm.bsky.social · Jan 1

I didn't need that reminder... Lol

Matt Schramm Ph.D @mattschramm.bsky.social · Dec 30

Guess his LLM is becoming too negative...

Matt Schramm Ph.D @mattschramm.bsky.social · Dec 28

I really don't need another botnet device mining crypto...

Matt Schramm Ph.D @mattschramm.bsky.social · Dec 26

Looks like OpenFOAM gave us a Christmas present...

Time to get this release available to our users.

Matt Schramm Ph.D @mattschramm.bsky.social · Dec 22

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...

Matt Schramm Ph.D @mattschramm.bsky.social · Dec 22

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...

Matt Schramm Ph.D @mattschramm.bsky.social · Dec 21

The only time I use chrome now is for my Team meetings.
Also, PiHole FTW.

Matt Schramm Ph.D @mattschramm.bsky.social · Dec 14

Well, day 14 part 2 of #AOC was something... Good luck LLMs...

Matt Schramm Ph.D @mattschramm.bsky.social · Dec 13

Matt Schramm Ph.D @mattschramm.bsky.social · Dec 11

The Linux kernel is being updated to allow 4096 cores...
www.phoronix.com/news/Perf-Su...

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

www.phoronix.com

Matt Schramm Ph.D @mattschramm.bsky.social · Dec 9

Do you know if there is a section of video that goes into any updates associated with their EFA network?

Matt Schramm Ph.D @mattschramm.bsky.social · Dec 6

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 · Dec 6

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.

Matt Schramm Ph.D @mattschramm.bsky.social · Dec 1

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