Florian
@oook.bsky.social
High Performance Computing for climate & weather models at NASA's GSFC.
Got my name on more monkey movies than average.
Got my name on more monkey movies than average.
That's moving up, arguably. We are running 300+ GB on a SoC in HPC grade hardware with integrated LPDDR5.
Far from consumer electronics, yes, but a step in that direction
Far from consumer electronics, yes, but a step in that direction
December 3, 2025 at 2:24 PM
That's moving up, arguably. We are running 300+ GB on a SoC in HPC grade hardware with integrated LPDDR5.
Far from consumer electronics, yes, but a step in that direction
Far from consumer electronics, yes, but a step in that direction
That absolutely doesn't solve the capacity issue the AI bubble has created in RAM. It's a knock-on good side effect at best...
December 3, 2025 at 2:22 PM
That absolutely doesn't solve the capacity issue the AI bubble has created in RAM. It's a knock-on good side effect at best...
A small silver lining is that the GH/BH all on one die silicon AI chips that exists alongside the classic GPUs are pushing development of LPDDR5 for performance. Those yield good results and could be a significant step in consumer electronics if they generalize in chip architecture.
December 3, 2025 at 2:22 PM
A small silver lining is that the GH/BH all on one die silicon AI chips that exists alongside the classic GPUs are pushing development of LPDDR5 for performance. Those yield good results and could be a significant step in consumer electronics if they generalize in chip architecture.
Unemployed engineers, but no budget to hire. Unused GPUs, but no electrical capacity or used GPUs with only a few years left in them.
We are running those 128 cores x86 for a loooooong time ;)
We are running those 128 cores x86 for a loooooong time ;)
December 3, 2025 at 2:11 PM
Unemployed engineers, but no budget to hire. Unused GPUs, but no electrical capacity or used GPUs with only a few years left in them.
We are running those 128 cores x86 for a loooooong time ;)
We are running those 128 cores x86 for a loooooong time ;)
Giving a seminar soon on High Performance Computing for research, gotta update my slide titled "Hardware market instability: want some chips, roll a dice, maybe you get it this year, maybe you don't!"
November 28, 2025 at 7:55 PM
Giving a seminar soon on High Performance Computing for research, gotta update my slide titled "Hardware market instability: want some chips, roll a dice, maybe you get it this year, maybe you don't!"
It goes beyond that. When they are installed, they have to be tested, tuned, parts have to be replaced because of a bad switch that kills performance, code tuned, etc. It's a damn long road after the ribbon cutting to a purring HPC!
November 18, 2025 at 10:28 PM
It goes beyond that. When they are installed, they have to be tested, tuned, parts have to be replaced because of a bad switch that kills performance, code tuned, etc. It's a damn long road after the ribbon cutting to a purring HPC!
If I may, let's actualize the language: IS stripping it for parts. Present tense. NASA is being disassembled now, very much underway.
October 25, 2025 at 11:56 AM
If I may, let's actualize the language: IS stripping it for parts. Present tense. NASA is being disassembled now, very much underway.
Our travel budget was 1$ _before_ the shutdown...
October 24, 2025 at 9:24 PM
Our travel budget was 1$ _before_ the shutdown...
Well deserved, congrats!
October 18, 2025 at 2:04 PM
Well deserved, congrats!
Thank you! I am slowly going insane seeing a vast majority of talking heads going on about something that has no proper definition!
Is AI the moment where science/tech truly becomes co-opted to become a religious cult?
Is AI the moment where science/tech truly becomes co-opted to become a religious cult?
October 15, 2025 at 6:13 PM
Thank you! I am slowly going insane seeing a vast majority of talking heads going on about something that has no proper definition!
Is AI the moment where science/tech truly becomes co-opted to become a religious cult?
Is AI the moment where science/tech truly becomes co-opted to become a religious cult?
It's a good way to get your badge deactivated for the entire building
October 9, 2025 at 9:47 PM
It's a good way to get your badge deactivated for the entire building
The message should read "MPI Fatal error" followed by a nice 100 deep stack of unresolved symbols.
October 9, 2025 at 9:46 PM
The message should read "MPI Fatal error" followed by a nice 100 deep stack of unresolved symbols.
Been running with those principles:
- write code at 50% complexity, since debugging is twice as hard
- code for today's problem as understood today
- write an ADR (or any design docs) and include potential paths to generalization
- write code at 50% complexity, since debugging is twice as hard
- code for today's problem as understood today
- write an ADR (or any design docs) and include potential paths to generalization
September 20, 2025 at 1:39 PM
Been running with those principles:
- write code at 50% complexity, since debugging is twice as hard
- code for today's problem as understood today
- write an ADR (or any design docs) and include potential paths to generalization
- write code at 50% complexity, since debugging is twice as hard
- code for today's problem as understood today
- write an ADR (or any design docs) and include potential paths to generalization
Certainly fits my experience. Also the paradox of: your team does cool stuff, it should be recognized, go defend it up the ladder, now your time is spent... not doing the cool stuff.
Then becomes the choice: remain a technician and see your work shelved, become a lead and lose your technical chops.
Then becomes the choice: remain a technician and see your work shelved, become a lead and lose your technical chops.
September 17, 2025 at 1:34 PM
Certainly fits my experience. Also the paradox of: your team does cool stuff, it should be recognized, go defend it up the ladder, now your time is spent... not doing the cool stuff.
Then becomes the choice: remain a technician and see your work shelved, become a lead and lose your technical chops.
Then becomes the choice: remain a technician and see your work shelved, become a lead and lose your technical chops.
Isn't it a fitting metaphor of, well, everything...
September 17, 2025 at 12:30 PM
Isn't it a fitting metaphor of, well, everything...
As always listen to your local NWS forecast: they stack regional high precision models and meteorologists analysis.
Best of both worlds: the brilliant brains and the supercomputer going full throttle!
Best of both worlds: the brilliant brains and the supercomputer going full throttle!
September 1, 2025 at 11:04 PM
As always listen to your local NWS forecast: they stack regional high precision models and meteorologists analysis.
Best of both worlds: the brilliant brains and the supercomputer going full throttle!
Best of both worlds: the brilliant brains and the supercomputer going full throttle!
And it shows _the center of the storm_ not the size of it!
The cone is designed to be statistically correct 2/3 of the times, too, so bottom line: you are _not_ out of trouble of you are not in the cone!
The cone is designed to be statistically correct 2/3 of the times, too, so bottom line: you are _not_ out of trouble of you are not in the cone!
September 1, 2025 at 11:03 PM
And it shows _the center of the storm_ not the size of it!
The cone is designed to be statistically correct 2/3 of the times, too, so bottom line: you are _not_ out of trouble of you are not in the cone!
The cone is designed to be statistically correct 2/3 of the times, too, so bottom line: you are _not_ out of trouble of you are not in the cone!
And following this, a decent write on "the cone" viz used by NOAA because it can be misunderstood, good to refresh ones understanding: www.scientificamerican.com/article/how-...
When a Hurricane Is Raging, Here’s What the Forecast Actually Means
Hurricane forecasts feature a “cone of uncertainty,” but what is it actually showing? Scientific American breaks it down for you
www.scientificamerican.com
September 1, 2025 at 10:57 PM
And following this, a decent write on "the cone" viz used by NOAA because it can be misunderstood, good to refresh ones understanding: www.scientificamerican.com/article/how-...
None of those clowns would survive reviewer 2. Or any scientific debate for that matter.
August 30, 2025 at 1:25 PM
None of those clowns would survive reviewer 2. Or any scientific debate for that matter.
In a previous work we introduce a prologue code, very short, designed at failing old compilers. This was our ultimate trap for user config oddities when checking versions the regular way during complex multistage compile would fail.
August 25, 2025 at 8:46 PM
In a previous work we introduce a prologue code, very short, designed at failing old compilers. This was our ultimate trap for user config oddities when checking versions the regular way during complex multistage compile would fail.