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26 changes: 19 additions & 7 deletions src/default.jl
Original file line number Diff line number Diff line change
Expand Up @@ -47,7 +47,11 @@ function defaultalg(A, b)
# This catches the case where A is a CuMatrix
# Which does not have LU fully defined
elseif A isa GPUArraysCore.AbstractGPUArray || b isa GPUArraysCore.AbstractGPUArray
alg = LUFactorization()
if VERSION >= v"1.8-"
alg = LUFactorization()
else
alg = QRFactorization()
end

# Not factorizable operator, default to only using A*x
else
Expand Down Expand Up @@ -118,9 +122,13 @@ function SciMLBase.solve(cache::LinearCache, alg::Nothing,
# This catches the case where A is a CuMatrix
# Which does not have LU fully defined
elseif A isa GPUArraysCore.AbstractGPUArray
alg = LUFactorization()
SciMLBase.solve(cache, alg, args...; kwargs...)

if VERSION >= v"1.8-"
alg = LUFactorization()
SciMLBase.solve(cache, alg, args...; kwargs...)
else
alg = QRFactorization()
SciMLBase.solve(cache, alg, args...; kwargs...)
end
# Not factorizable operator, default to only using A*x
# IterativeSolvers is faster on CPU but not GPU-compatible
else
Expand Down Expand Up @@ -185,9 +193,13 @@ function init_cacheval(alg::Nothing, A, b, u, Pl, Pr, maxiters, abstol, reltol,
# This catches the case where A is a CuMatrix
# Which does not have LU fully defined
elseif A isa GPUArraysCore.AbstractGPUArray
alg = LUFactorization()
init_cacheval(alg, A, b, u, Pl, Pr, maxiters, abstol, reltol, verbose)

if VERSION >= v"1.8-"
alg = LUFactorization()
init_cacheval(alg, A, b, u, Pl, Pr, maxiters, abstol, reltol, verbose)
else
alg = QRFactorization()
init_cacheval(alg, A, b, u, Pl, Pr, maxiters, abstol, reltol, verbose)
end
# Not factorizable operator, default to only using A*x
# IterativeSolvers is faster on CPU but not GPU-compatible
else
Expand Down