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Fix CUDA functional check in init_cacheval functions #770

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Sep 3, 2025
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Fix CUDA functional check in init_cacheval functions #770

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10 changes: 10 additions & 0 deletions ext/LinearSolveCUDAExt.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -53,6 +53,11 @@ end
function LinearSolve.init_cacheval(alg::CudaOffloadLUFactorization, A::AbstractArray, b, u, Pl, Pr,
maxiters::Int, abstol, reltol, verbose::Bool,
assumptions::OperatorAssumptions)
# Check if CUDA is functional before creating CUDA arrays
if !CUDA.functional()
return nothing
end

T = eltype(A)
noUnitT = typeof(zero(T))
luT = LinearAlgebra.lutype(noUnitT)
Expand All @@ -76,6 +81,11 @@ end
function LinearSolve.init_cacheval(alg::CudaOffloadQRFactorization, A, b, u, Pl, Pr,
maxiters::Int, abstol, reltol, verbose::Bool,
assumptions::OperatorAssumptions)
# Check if CUDA is functional before creating CUDA arrays
if !CUDA.functional()
return nothing
end

qr(CUDA.CuArray(A))
end

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