Glenn K. Lockwood
@glennklockwood.com
I am a supercomputing enthusiast, but I usually don't know what I'm talking about. I post about large-scale infrastructure for #HPC and #AI.
NERSC just got their first rack of the Doudna early access system from Dell--36 nodes of GB200 NVL4 in a 50OU rack. It's TALL!
#HPC
Source: www.linkedin.com/posts/nation...
#HPC
Source: www.linkedin.com/posts/nation...
January 14, 2026 at 12:15 AM
NERSC just got their first rack of the Doudna early access system from Dell--36 nodes of GB200 NVL4 in a 50OU rack. It's TALL!
#HPC
Source: www.linkedin.com/posts/nation...
#HPC
Source: www.linkedin.com/posts/nation...
I use this read-it-later app that continually resurfaces old things I’ve read and found interesting. Headed into 2026 in a job that is all #AI all the time, I feel like this quote is more meaningful than ever. Everyone is an expert, yet so few actually understand.
Source: fs.blog/two-types-of...
Source: fs.blog/two-types-of...
December 31, 2025 at 7:42 PM
I use this read-it-later app that continually resurfaces old things I’ve read and found interesting. Headed into 2026 in a job that is all #AI all the time, I feel like this quote is more meaningful than ever. Everyone is an expert, yet so few actually understand.
Source: fs.blog/two-types-of...
Source: fs.blog/two-types-of...
Maybe when Lux comes online?
Otherwise, I took this snazzy photo of Frontier when I was on-site. Not as good as in-person, but way less travel too.
Otherwise, I took this snazzy photo of Frontier when I was on-site. Not as good as in-person, but way less travel too.
December 3, 2025 at 2:59 AM
Maybe when Lux comes online?
Otherwise, I took this snazzy photo of Frontier when I was on-site. Not as good as in-person, but way less travel too.
Otherwise, I took this snazzy photo of Frontier when I was on-site. Not as good as in-person, but way less travel too.
Wouldn’t be a trip to Oak Ridge National Lab without a leg on one of these lil guys.
December 3, 2025 at 1:59 AM
Wouldn’t be a trip to Oak Ridge National Lab without a leg on one of these lil guys.
We both went to Rutgers. See also this plaque I got from NERSC
November 21, 2025 at 6:36 AM
We both went to Rutgers. See also this plaque I got from NERSC
This years venue for the #SC25 Tech Program Reception took me back to my childhood, going to my local science center in New Jersey. As has happened all week though, I kept running into friends and colleagues, so I didn’t actually get to see many of the exhibits. Alas!
November 21, 2025 at 5:00 AM
This years venue for the #SC25 Tech Program Reception took me back to my childhood, going to my local science center in New Jersey. As has happened all week though, I kept running into friends and colleagues, so I didn’t actually get to see many of the exhibits. Alas!
Andreas Dilger is now working for The Lustre Collective (thelustrecollective.com) after leaving DDN. I am glad to see his leadership continue to drive Lustre into the future. Say what you will about it, Lustre is the standard to which every other #HPC file system is compared.
#SC25
#SC25
November 18, 2025 at 11:50 PM
Andreas Dilger is now working for The Lustre Collective (thelustrecollective.com) after leaving DDN. I am glad to see his leadership continue to drive Lustre into the future. Say what you will about it, Lustre is the standard to which every other #HPC file system is compared.
#SC25
#SC25
they must be too busy breaking the yottaflop barrier to staff their booth
November 18, 2025 at 11:22 PM
they must be too busy breaking the yottaflop barrier to staff their booth
When I spent a Thanksgiving week after SC writing the non-MPI layer for Darshan years ago, I thought to myself “surely this work will make me famous!”
I guess my ship finally came in at the PDSW keynote by Rob Ross.
#SC25
I guess my ship finally came in at the PDSW keynote by Rob Ross.
#SC25
November 17, 2025 at 3:26 PM
When I spent a Thanksgiving week after SC writing the non-MPI layer for Darshan years ago, I thought to myself “surely this work will make me famous!”
I guess my ship finally came in at the PDSW keynote by Rob Ross.
#SC25
I guess my ship finally came in at the PDSW keynote by Rob Ross.
#SC25
The exhibit hall overflows into the old stadium this year. Fun to watch the setup from afar, but feel bad for the vendors who didn’t get a spot in the main room.
#SC25
#SC25
November 17, 2025 at 1:35 AM
The exhibit hall overflows into the old stadium this year. Fun to watch the setup from afar, but feel bad for the vendors who didn’t get a spot in the main room.
#SC25
#SC25
Here’s Rob gesturing about the nuances of PnetCDF. Sadly I didn’t think to snap a photo of @adrianjhpc.bsky.social for completeness.
#SC25
#SC25
November 17, 2025 at 1:33 AM
Here’s Rob gesturing about the nuances of PnetCDF. Sadly I didn’t think to snap a photo of @adrianjhpc.bsky.social for completeness.
#SC25
#SC25
Chatting with a pal reminded me of a fun pre-SC activity: looking back at old conference takes that aged like milk. Remember this one?
#HPC #zettascale #hedoesntworkthereanymore
#HPC #zettascale #hedoesntworkthereanymore
November 14, 2025 at 10:40 PM
Chatting with a pal reminded me of a fun pre-SC activity: looking back at old conference takes that aged like milk. Remember this one?
#HPC #zettascale #hedoesntworkthereanymore
#HPC #zettascale #hedoesntworkthereanymore
November 14, 2025 at 8:22 PM
I never heard of Socks Club before this year, they seem to be crushing it. I now have WEKA socks, VAST socks, and Anyscale socks all from them. Made in the USA, and pretty high quality for conference swag. I should invest.
CC @addisonsnell.bsky.social my fellow sock aficionado.
CC @addisonsnell.bsky.social my fellow sock aficionado.
November 5, 2025 at 4:57 PM
I never heard of Socks Club before this year, they seem to be crushing it. I now have WEKA socks, VAST socks, and Anyscale socks all from them. Made in the USA, and pretty high quality for conference swag. I should invest.
CC @addisonsnell.bsky.social my fellow sock aficionado.
CC @addisonsnell.bsky.social my fellow sock aficionado.
Satya posted a video showing off their GB300 which appears to be in a previous-gen, air-cooled DC. Look at the size of the two liquid-air heat exchangers required to support a single ~120kW NVL72 rack. Not as ridiculous as the 4x used by Meta, but man, this looks silly compared to traditional #HPC.
October 11, 2025 at 6:32 PM
Satya posted a video showing off their GB300 which appears to be in a previous-gen, air-cooled DC. Look at the size of the two liquid-air heat exchangers required to support a single ~120kW NVL72 rack. Not as ridiculous as the 4x used by Meta, but man, this looks silly compared to traditional #HPC.
Time for my vacation in North Dakota to come to an end. I can fly to either Denver or Denver. I guess I’m flying to Denver.
September 28, 2025 at 6:26 PM
Time for my vacation in North Dakota to come to an end. I can fly to either Denver or Denver. I guess I’m flying to Denver.
Here is the lutefisk (bottom right) that I had for dinner. If you don’t know what that is, it’s worth looking up. Sounds way worse than it tastes.
September 26, 2025 at 12:32 AM
Here is the lutefisk (bottom right) that I had for dinner. If you don’t know what that is, it’s worth looking up. Sounds way worse than it tastes.
Here’s the klub I had for lunch. Hard to see the ~cm of melted butter at the bottom of the container.
September 25, 2025 at 1:02 AM
Here’s the klub I had for lunch. Hard to see the ~cm of melted butter at the bottom of the container.
I’m in North Dakota this week celebrating Scandinavian heritage.
That liquid on top is butter.
That liquid on top is butter.
September 24, 2025 at 10:32 PM
I’m in North Dakota this week celebrating Scandinavian heritage.
That liquid on top is butter.
That liquid on top is butter.
Also, check out the earthworks being done in preparation for their upcoming Doudna system. Going to require a lot of cooling!
September 19, 2025 at 11:53 PM
Also, check out the earthworks being done in preparation for their upcoming Doudna system. Going to require a lot of cooling!
Visited some of my old pals at @nersc.bsky.social this afternoon. It feels like a lot has changed, but at the same time, it’s the same old place. I do miss working here, but am glad I now get a chance to visit under the auspices of my new role at VAST.
September 19, 2025 at 11:50 PM
Visited some of my old pals at @nersc.bsky.social this afternoon. It feels like a lot has changed, but at the same time, it’s the same old place. I do miss working here, but am glad I now get a chance to visit under the auspices of my new role at VAST.
I assume this +$4b buildout is the huge site next door to the just-disclosed Fairwater site. If you consider this a single "datacenter," this is what a ~gigawatt AI supercomputer is going to look like in 2027.
September 18, 2025 at 6:15 PM
I assume this +$4b buildout is the huge site next door to the just-disclosed Fairwater site. If you consider this a single "datacenter," this is what a ~gigawatt AI supercomputer is going to look like in 2027.
My first taste of loss since leaving Microsoft came last night 😢
August 22, 2025 at 4:40 PM
My first taste of loss since leaving Microsoft came last night 😢