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Optimize stability polynomial evaluation and add order star plots #70

Merged
merged 5 commits into from
Jul 12, 2020
Merged

Optimize stability polynomial evaluation and add order star plots #70

merged 5 commits into from
Jul 12, 2020

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YingboMa
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julia> using BenchmarkTools

julia> tab = constructTsitourasPapakostas6();

julia> @btime stability_region(0.1, $tab) # PR
  460.810 ns (4 allocations: 1.50 KiB)
1.1051709180753968

julia> @btime stability_region(0.1, $tab) # master
  1.411 μs (16 allocations: 6.11 KiB)
1.1051709180753968

RadauIIA5 stability region:
radau5stab

image

RadauIIA5 order star:
radau5star

image

The reference plots are from Hairer & Wanner http://www.unige.ch/~hairer/preprints/coimbra.pdf

@YingboMa
Optimize stability polynomial evaluation
5d32fed 
```julia
julia> using BenchmarkTools

julia> tab = constructTsitourasPapakostas6();

julia> @Btime stability_region(0.1, $tab) # PR
  460.810 ns (4 allocations: 1.50 KiB)
1.1051709180753968

julia> @Btime stability_region(0.1, $tab) # master
  1.411 μs (16 allocations: 6.11 KiB)
1.1051709180753968
```
@YingboMa YingboMa requested a review from ChrisRackauckas July 11, 2020 22:18
@YingboMa YingboMa force-pushed the myb/stability_ply branch from 6919904 to 0798805 Compare July 11, 2020 22:19
@YingboMa YingboMa merged commit 260b90d into master Jul 12, 2020
@YingboMa YingboMa deleted the myb/stability_ply branch July 12, 2020 00:26
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@ChrisRackauckas ChrisRackauckas ChrisRackauckas approved these changes

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3 participants
@YingboMa @ChrisRackauckas @dkarrasch