Todd Gamblin
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tgamblin.bsky.social
Todd Gamblin
@tgamblin.bsky.social
Dev tools, open source, HPC, systems, parallel computing at LLNL. spack.io guy. Setting up http://hpsf.io. Opinions mine. he/him.
ASP and dependency solving:
* APT: arxiv.org/pdf/1109.0113 (simpler encoding -- fits in 30 lines at github.com/potassco/asp...)
* Spack: arxiv.org/pdf/2011.07851
arxiv.org
October 7, 2025 at 9:54 PM
ASP:
* Relation to Prolog: See end of 1.8 and paragraph in 3.5
* Lifschitz and Nimela articles here: ojs.aaai.org/aimagazine/i...
* Lifschitz book is very clear in comparison to others (I find the description of ASP solvers in 1.3 to be very easy to understand): www.cs.utexas.edu/~vl/teaching...
Vol. 37 No. 3: Fall 2016 | AI Magazine
ojs.aaai.org
October 7, 2025 at 9:47 PM
Constraints in LP:
* 2.8 in Fifty Years of Prolog and Beyond is good and has lots of pointers: arxiv.org/pdf/2201.10816
* and dl.acm.org/doi/pdf/10.1..., but it came after Prolog II and while Prolog III was in development
arxiv.org
October 7, 2025 at 9:47 PM
Latest draft looks awesome! Does this mean 12.3 is not happening? Would be happy to help with 12.3 if needed...
October 6, 2025 at 9:23 PM
Sorry I missed this earlier, also it's an RFI so there is no silent period. If you want to meet about this to ask questions, email me.
July 21, 2025 at 4:25 AM
The RFI is about innovations needed to move NNSA HPC centers in a new direction, where all the resources could operate as a single system. We'd like to have made substantial progress on this before any follow-on, and perhaps leverage future system procurements to move even closer to the goals.
July 21, 2025 at 4:24 AM
Sorry -- missed this earlier. I'd say they're aligned, just reading the ASAP RFI, but the LLNL RFI is more specific and is looking at how we might build a particular type of HPC center. ASAP seems much more broad and also not specific to NNSA.
July 21, 2025 at 4:22 AM
I think we're going to have a nice long run of 1.x's first. 😀
July 21, 2025 at 2:41 AM
Reposted by Todd Gamblin
Congratulations! That’s a huge milestone and so cool to see
July 20, 2025 at 10:34 PM