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eric

@ericdfoley

Founded Open Geophysical (now Shearwater GeoServices) writing seismic software and once again writing geo software. Also worked on radar & sonar stuff and HFT.

 Boulder, CO
Joined April 2009
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Photo by eric (@ericdfoley)Photo by eric (@ericdfoley)Photo by eric (@ericdfoley)Photo by eric (@ericdfoley)Photo by eric (@ericdfoley)Photo by eric (@ericdfoley)Photo by eric (@ericdfoley)Photo by eric (@ericdfoley)Photo by eric (@ericdfoley)Photo by eric (@ericdfoley)
One interesting thing now that Claude, etc. enable is writing very specific linear solvers for specific problems.
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In my case, I am using IPOPT to optimize something. A generic linear solver like MUMPS is fine, but if your problem is pretty fixed you can very easily get a much faster solver by baking in the elimination order based on what you know about your matrix.
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And now that this work takes approximately zero effort (since Opus 5.5 can do it well), it will almost always make sense to write custom solvers.
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Sneaky learners always gaming my rewards
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What happens when Talarico is elected and he does not in fact trans all the kids?
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Now that I have distilled my CasADi IPOPT trajectory planner into a small NN my pro peloton simulator runs 50 riders worth of trajectory planning per core with room to spare.
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I hadn't tried distilling planners in the past but it is pretty straightforward
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RLing some bike racing
Image from eric (@ericdfoley)
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Unfortunately they haven't learned to navigate corners as a group yet
Image from eric (@ericdfoley)
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I don't understand why the built in Claude Code Agent tool doesn't support changing the effort. Obviously there are workarounds, but it seems like a simple and useful thing to support directly.
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I need to put my coding agents on a unit-test diet
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Just when I buy a few long bonds the Treasury auction fails. Won't make that mistake again.
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Love to open up a Claude terminal and see this shit
Image from eric (@ericdfoley)
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Like I have any idea what any of that means
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Thank God for Opus 5.5
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Somehow in college I never was interested in EE (except for the FPGA class I took from Bill Dally), but 20y later working through Razavi Microelectronics I really enjoy it
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Interesting note on changing effort in Fable: "And on Fable 5.1, changing it mid-session no longer invalidates the prompt cache (as of 2.1.260)."
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i feel like Fable seriously needs some theory of mind post-training
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Next time I visit Italy in the summer (maybe never), I am bringing a phase-change cooling vest
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