Add XoshiroSplit type to copy added task RNG state#51271
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nhz2 wants to merge 2 commits intoJuliaLang:masterfrom
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Add XoshiroSplit type to copy added task RNG state#51271nhz2 wants to merge 2 commits intoJuliaLang:masterfrom
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vtjnash
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Sep 13, 2023
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I think we might as well make this the default behavior for Xoshiro itself, rather than duplicating everything to have an identical XoshiroSplit type. They will be the same size anyways when allocated (6 words), due to alignment.
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I created #51332 to replace this PR |
vtjnash
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Sep 15, 2023
This PR adds an optional field to the existing `Xoshiro` struct to be able to faithfully copy the task-local RNG state. Fixes #51255 Redo of #51271 Background context: #49110 added an additional state to the task-local RNG. However, before this PR `copy(default_rng())` did not include this extra state, causing subtle errors in `Test` where `copy(default_rng())` is assumed to contain the full task-local RNG state.
NHDaly
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Sep 20, 2023
This PR adds an optional field to the existing `Xoshiro` struct to be able to faithfully copy the task-local RNG state. Fixes #51255 Redo of #51271 Background context: #49110 added an additional state to the task-local RNG. However, before this PR `copy(default_rng())` did not include this extra state, causing subtle errors in `Test` where `copy(default_rng())` is assumed to contain the full task-local RNG state.
KristofferC
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Oct 3, 2023
This PR adds an optional field to the existing `Xoshiro` struct to be able to faithfully copy the task-local RNG state. Fixes #51255 Redo of #51271 Background context: #49110 added an additional state to the task-local RNG. However, before this PR `copy(default_rng())` did not include this extra state, causing subtle errors in `Test` where `copy(default_rng())` is assumed to contain the full task-local RNG state. (cherry picked from commit 41b41ab)
nalimilan
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Nov 5, 2023
This PR adds an optional field to the existing `Xoshiro` struct to be able to faithfully copy the task-local RNG state. Fixes #51255 Redo of #51271 Background context: #49110 added an additional state to the task-local RNG. However, before this PR `copy(default_rng())` did not include this extra state, causing subtle errors in `Test` where `copy(default_rng())` is assumed to contain the full task-local RNG state. (cherry picked from commit 41b41ab)
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Fixes #51255 by defining
mutable struct XoshiroSplit <: AbstractRNGthat is returned bycopy(default_rng())#49110 added an additional state to the task-local RNG. However, before this PR
copy(default_rng())did not include this extra state, causing subtle errors inTestwherecopy(default_rng())is assumed to contain the full task-local RNG state.