egg changed the topic of #principia to: Logs: https://esper.irclog.whitequark.org/principia | <scott_manley> anyone that doubts the wisdom of retrograde bop needs to get the hell out | https://xkcd.com/323/ | <egg> calculating the influence of lamont on Pluto is a bit silly…
<paculino>
> Clearly there's a need for a channel with egg's ~~wrath~~ lecture notes on numeric integration
<paculino>
Couldn't this just be a link to a GitHub page?
<raptop>
I guess the citations section to a degree
<queqiao->
⟨egg⟩ ⟪raptop⟫ Clearly there's a need for a channel […] ⮪ > Did anyone tr[y] fast forward[ing] like billions of years with the principia solar system modelI think we need egg’s lectures on orders of magnitude here. Let’s ignore the buildup of data (the question is a bit ambiguous; as trimethylaluminum points out, this is a problem in Principia-the-mod, but could reasonably easily be tamed in Principia-the-libraries—you’d need...
<queqiao->
... to Forget regularly, and to change the hardcoded checkpointing interval), integrating the solar system for 100 years (running the MercuryPerihelionTest.DISABLED_Year2050 test) takes 236 s on my laptop.
<queqiao->
It would take it 75 years to reach a billion years.
<queqiao->
Principia has not existed for long enough for anyone to integrate the solar system for a billion years.
<queqiao->
⟨egg⟩ (Of course the result of such a calculation would most likely be garbage due to roundoff accumulation.)
<queqiao->
⟨egg⟩ > Did anyone tr[y] fast forward[ing] like billions of years with the principia solar system modelI think we need egg’s lectures on orders of magnitude here. Let’s ignore the buildup of data (the question is a bit ambiguous; as trimethylaluminium points out, this is a problem in Principia-the-mod, but could reasonably easily be tamed in Principia-the-libraries—you’d need to Forget regularly, and to change the hardcoded...
<queqiao->
... checkpointing interval), integrating the solar system for 100 years (running the MercuryPerihelionTest.DISABLED_Year2050 test) takes 236 s on my laptop.
<queqiao->
It would take it 75 years to reach a billion years.
<queqiao->
Principia has not existed for long enough for anyone to integrate the solar system for a billion years.
<queqiao->
⟨jfinizolas⟩ Thanks for the answer :)
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<queqiao->
⟨butcher6994⟩ ⟪egg⟫ > Did anyone tr[y] fast forward[ing] […] ⮪ So what you're saying is we need a bigger ~boat~ box?
<queqiao->
⟨thunkii⟩ you might as well try to find a fifth Fermat prime by running the CGoL pattern that self-destructs if it finds it
<queqiao->
⟨thunkii⟩ theoretically possible, never going to happen
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<queqiao->
⟨sleepysaf⟩ curiously, only happens if i decouple […] ⮪ going to try this order:
<queqiao->
2. time accelerate
<queqiao->
and see if problem persists
<queqiao->
3. decouple
<queqiao->
1. pass 140km
<queqiao->
⟨sleepysaf⟩ +briefly
<queqiao->
⟨sleepysaf⟩ I'd like to get to the bottom of this because not being able to time accelerate with a probe is unplayable