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BlackHolePerturbationToolkit / PostNewtonianSelfForce

Post-Newtonian expansions in the self-force regime
MIT License
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Very slow loading of PN series in Mathematica 12.1.0.0 #3

Open nielsw2 opened 4 years ago

nielsw2 commented 4 years ago

In Mathematica 12.1.0.0 the PN series take ages to load. Timing[PostNewtonianExpansion["/Schwarzschild/Circular/Flux/Horizon"]] returns 18 seconds.

The same command on Mathematica 12.0.0.0 takes 0.44 seconds. In Mathematica 11.2.0.0 it takes 0.03 seconds. In Mathematica 10.4.1 it takes 0.09 seconds.

barrywardell commented 4 years ago

This appears to be a generic problem with 12.1 when assigning a SeriesData object to a variable. For example, just doing Get["SeriesData/Schwarzschild/Circular/Flux/Horizon.m"] takes a very long time also, and this can be narrowed down to the presence of a SeriesData object in the file. We should report this to Wolfram. In the meantime, converting to mx appears to restore the original performance.

barrywardell commented 2 years ago

This is still an issue with 13.0.1

barrywardell commented 2 years ago

And with 13.1

barrywardell commented 2 years ago

It might be that the best solution is to move away from using SeriesData unless explicitly asked for.