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Test cudss_set with the data parameter user_perm #27

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Mar 25, 2024
Merged

Test cudss_set with the data parameter user_perm #27

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0ffde20
Update libcudss.jl
amontoison Mar 25, 2024
9ec5569
Test cudss_set with the data parameter user_perm
amontoison Mar 25, 2024
e3bd4de
Update the test user_permutation
amontoison Mar 25, 2024
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7 changes: 3 additions & 4 deletions src/interfaces.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -97,10 +97,9 @@ end
function cudss_set(data::CudssData, param::String, value)
(param ∈ CUDSS_DATA_PARAMETERS) || throw(ArgumentError("Unknown data parameter $param."))
(param == "user_perm") || throw(ArgumentError("Only the data parameter \"user_perm\" can be set."))
type = CUDSS_TYPES[param]
val = Ref{type}(value)
nbytes = sizeof(val)
cudssDataSet(handle(), data, param, val, nbytes)
(value isa Vector{Cint} || value isa CuVector{Cint}) || throw(ArgumentError("The permutation is neither a Vector{Cint} nor a CuVector{Cint}."))
nbytes = sizeof(value)
cudssDataSet(handle(), data, param, value, nbytes)
end

function cudss_set(config::CudssConfig, param::String, value)
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4 changes: 2 additions & 2 deletions src/libcudss.jl
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Expand Up @@ -127,14 +127,14 @@ end
@checked function cudssDataSet(handle, data, param, value, sizeInBytes)
initialize_context()
@ccall libcudss.cudssDataSet(handle::cudssHandle_t, data::cudssData_t,
param::cudssDataParam_t, value::Ptr{Cvoid},
param::cudssDataParam_t, value::PtrOrCuPtr{Cvoid},
sizeInBytes::Cint)::cudssStatus_t
end

@checked function cudssDataGet(handle, data, param, value, sizeInBytes, sizeWritten)
initialize_context()
@ccall libcudss.cudssDataGet(handle::cudssHandle_t, data::cudssData_t,
param::cudssDataParam_t, value::Ptr{Cvoid},
param::cudssDataParam_t, value::PtrOrCuPtr{Cvoid},
sizeInBytes::Cint, sizeWritten::Ptr{Cint})::cudssStatus_t
end

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4 changes: 4 additions & 0 deletions test/runtests.jl
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Expand Up @@ -34,4 +34,8 @@ include("test_cudss.jl")
@testset "Generic API" begin
cudss_generic()
end

@testset "User permutation" begin
user_permutation()
end
end
103 changes: 103 additions & 0 deletions test/test_cudss.jl
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Expand Up @@ -344,3 +344,106 @@ function cudss_generic()
end
end
end

function user_permutation()
function permutation_lu(T, A_cpu, x_cpu, b_cpu, permutation)
A_gpu = CuSparseMatrixCSR(A_cpu)
x_gpu = CuVector(x_cpu)
b_gpu = CuVector(b_cpu)

solver = CudssSolver(A_gpu, "G", 'F')

cudss_set(solver, "user_perm", permutation)

cudss("analysis", solver, x_gpu, b_gpu)
cudss("factorization", solver, x_gpu, b_gpu)
cudss("solve", solver, x_gpu, b_gpu)

nz = cudss_get(solver, "lu_nnz")
return nz
end

function permutation_ldlt(T, A_cpu, x_cpu, b_cpu, permutation)
A_gpu = CuSparseMatrixCSR(A_cpu |> tril)
x_gpu = CuVector(x_cpu)
b_gpu = CuVector(b_cpu)

structure = T <: Real ? "S" : "H"
solver = CudssSolver(A_gpu, structure, 'L')
cudss_set(solver, "user_perm", permutation)

cudss("analysis", solver, x_gpu, b_gpu)
cudss("factorization", solver, x_gpu, b_gpu)
cudss("solve", solver, x_gpu, b_gpu)

nz = cudss_get(solver, "lu_nnz")
return nz
end

function permutation_llt(T, A_cpu, x_cpu, b_cpu, permutation)
A_gpu = CuSparseMatrixCSR(A_cpu |> triu)
x_gpu = CuVector(x_cpu)
b_gpu = CuVector(b_cpu)

structure = T <: Real ? "SPD" : "HPD"
solver = CudssSolver(A_gpu, structure, 'U')
cudss_set(solver, "user_perm", permutation)

cudss("analysis", solver, x_gpu, b_gpu)
cudss("factorization", solver, x_gpu, b_gpu)
cudss("solve", solver, x_gpu, b_gpu)

nz = cudss_get(solver, "lu_nnz")
return nz
end

n = 1000
perm1_cpu = Vector{Cint}(undef, n)
perm2_cpu = Vector{Cint}(undef, n)
for i = 1:n
perm1_cpu[i] = i
perm2_cpu[i] = n-i+1
end
perm1_gpu = CuVector{Cint}(perm1_cpu)
perm2_gpu = CuVector{Cint}(perm2_cpu)
@testset "precision = $T" for T in (Float32, Float64, ComplexF32, ComplexF64)
@testset "LU" begin
A_cpu = sprand(T, n, n, 0.05) + I
x_cpu = zeros(T, n)
b_cpu = rand(T, n)
nz1_cpu = permutation_lu(T, A_cpu, x_cpu, b_cpu, perm1_cpu)
nz2_cpu = permutation_lu(T, A_cpu, x_cpu, b_cpu, perm2_cpu)
nz1_gpu = permutation_lu(T, A_cpu, x_cpu, b_cpu, perm1_gpu)
nz2_gpu = permutation_lu(T, A_cpu, x_cpu, b_cpu, perm2_gpu)
@test nz1_cpu == nz1_gpu
@test nz2_cpu == nz2_gpu
@test nz1_cpu != nz2_cpu
end
@testset "LDLᵀ / LDLᴴ" begin
A_cpu = sprand(T, n, n, 0.05) + I
A_cpu = A_cpu + A_cpu'
x_cpu = zeros(T, n)
b_cpu = rand(T, n)
nz1_cpu = permutation_ldlt(T, A_cpu, x_cpu, b_cpu, perm1_cpu)
nz2_cpu = permutation_ldlt(T, A_cpu, x_cpu, b_cpu, perm2_cpu)
nz1_gpu = permutation_ldlt(T, A_cpu, x_cpu, b_cpu, perm1_gpu)
nz2_gpu = permutation_ldlt(T, A_cpu, x_cpu, b_cpu, perm2_gpu)
@test nz1_cpu == nz1_gpu
@test nz2_cpu == nz2_gpu
@test nz1_cpu != nz2_cpu
end
@testset "LLᵀ / LLᴴ" begin
A_cpu = sprand(T, n, n, 0.01)
A_cpu = A_cpu * A_cpu' + I
x_cpu = zeros(T, n)
b_cpu = rand(T, n)
nz1_cpu = permutation_llt(T, A_cpu, x_cpu, b_cpu, perm1_cpu)
nz2_cpu = permutation_llt(T, A_cpu, x_cpu, b_cpu, perm2_cpu)
nz1_gpu = permutation_llt(T, A_cpu, x_cpu, b_cpu, perm1_gpu)
nz2_gpu = permutation_llt(T, A_cpu, x_cpu, b_cpu, perm2_gpu)
@test nz1_cpu == nz1_gpu
@test nz2_cpu == nz2_gpu
@test nz1_cpu != nz2_cpu
end
end
end
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