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InverseLBFGSOperator for GPU #306

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tmigot opened this issue Dec 20, 2023 · 5 comments
Open

InverseLBFGSOperator for GPU #306

tmigot opened this issue Dec 20, 2023 · 5 comments
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enhancement GPU

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@tmigot
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tmigot commented Dec 20, 2023

This operator is used in JSOSolvers https://github.com/JuliaSmoothOptimizers/JSOSolvers.jl/blob/5c08163ee594d8f8d7e12a98b14f4ed7cd22424e/src/lbfgs.jl#L87C3-L87C63 but nothing allows GPU computation
@dpo
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dpo commented Dec 20, 2023

The solution is probably #258, but needs to be revisited.

@amontoison
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We would like to run lbfgs from JSOSolvers.jl with @michel2323 on GPU.
What is the issue with InverseLBFGSOperator except the type in the workspace?

@dpo
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dpo commented Jan 29, 2025

Sorry, I don’t understand the question

@amontoison
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amontoison commented Jan 29, 2025 •
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Sorry I should reformulate my question. Why is it not working on GPU?
Is it only related to the type of the vectors in the workspace (Vector{T}) ?

@amontoison
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Ok, I investigated, and it requires more than just making the array types generic. :(

We need some GPU kernels because some updates affect only specific coefficients in the vectors.

It's a full day's work.

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@dpo @tmigot @amontoison