Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

[HSL_MC66] Add a Julia interface #121

Open
wants to merge 2 commits into
base: main
Choose a base branch
from
Open

[HSL_MC66] Add a Julia interface #121

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
cc505a5
[HSL_MC66] Add a Julia interface
amontoison May 1, 2023
87c4c94
Update the interface of hsl_mc66
amontoison May 1, 2023
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
1 change: 1 addition & 0 deletions src/HSL.jl
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -36,6 +36,7 @@ include("wrappers.jl")
# Interfaces
include("hsl_ma57.jl")
include("hsl_ma97.jl")
include("hsl_mc66.jl")
include("kb07.jl")
include("mc21.jl")
include("mc77.jl")
Expand Down
92 changes: 92 additions & 0 deletions src/hsl_mc66.jl
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,92 @@
export mc66, mc66_control

mutable struct fa14_seed
ix::Int32
end

fa14_seed() = fa14_seed(65535)

mutable struct mc66_control{T <: BLAS.BlasReal}
lp::Int32
wp::Int32
mp::Int32
print_level::Int32
kl_aggressive::T
max_imbalance::T
mglevel::Int32
grid_rdc_fac::T
coarsest_size::Int32
coarsen_scheme::Int32
num_coarsest_kl::Int32
end

function mc66_control{T}(; lp=6, wp=6, mp=6, print_level=-1, kl_aggressive=-1, max_imbalance=0.01,
mglevel=typemax(Int32), grid_rdc_fac=0.75, coarsest_size=100,
coarsen_scheme=1, num_coarsest_kl=4) where {T <: BLAS.BlasReal}

control = mc66_control{T}(lp, wp, mp, print_level, kl_aggressive, max_imbalance, mglevel,
grid_rdc_fac, coarsest_size, coarsen_scheme, num_coarsest_kl)
return control
end

# Thanks to `nm -D libhsl.so`!
function mc66s(m, n, nz, irn, jcn, nblocks, control, seed, row_order, info, rowptr, column_order, colptr, netcut, rowdiff, kblocks)
@ccall libhsl.__hsl_mc66_simple_MOD_monet(m::Ref{Int32}, n::Ref{Int32}, nz::Ptr{Int32}, irn::Ptr{Int32}, jcn::Ptr{Int32},
nblocks::Ref{Int32}, control::Ref{mc66_control{Float32}}, seed::Ref{fa14_seed},
row_order::Ptr{Int32}, info::Ref{Int32}, rowptr::Ptr{Int32}, column_order::Ptr{Int32},
colptr::Ptr{Int32}, netcut::Ref{Int32}, rowdiff::Ref{Float32}, kblocks::Ref{Int32})::Cvoid
end

function mc66s_print_message(info, control)
context = ""
@ccall libhsl.__hsl_mc66_single_MOD_monet_print_message(info::Ref{Int32}, control.lp::Ref{Int32}, control.wp::Ref{Int32}, context::Ptr{UInt8})::Cvoid
end

function mc66d(m, n, nz, irn, jcn, nblocks, control, seed, row_order, info, rowptr, column_order, colptr, netcut, rowdiff, kblocks)
@ccall libhsl.__hsl_mc66_double_MOD_monet(m::Ref{Int32}, n::Ref{Int32}, nz::Ptr{Int32}, irn::Ptr{Int32}, jcn::Ptr{Int32},
nblocks::Ref{Int32}, control::Ref{mc66_control{Float64}}, seed::Ref{fa14_seed},
row_order::Ptr{Int32}, info::Ref{Int32}, rowptr::Ptr{Int32}, column_order::Ptr{Int32},
colptr::Ptr{Int32}, netcut::Ref{Int32}, rowdiff::Ref{Float64}, kblocks::Ref{Int32})::Cvoid
end

function mc66d_print_message(info, control)
context = ""
@ccall libhsl.__hsl_mc66_double_MOD_monet_print_message(info::Ref{Int32}, control.lp::Ref{Int32}, control.wp::Ref{Int32}, context::Ptr{UInt8})::Cvoid
end

"""
rp, cp = mc66(A::SparseMatrixCSC, k::Integer)

Order an unsymmetric matrix A into singly bordered blocked diagonal (SBBD) form.

A[rp, cp] = [ A₁₁ S₁]
[ A₂₂ S₂]
[ • • ]
[ • • ]
[ • • ]
[ Aₖₖ Sₖ]
amontoison marked this conversation as resolved.
Show resolved Hide resolved
"""
function mc66(A::SparseMatrixCSC, nblocks::Integer)
m, n = size(A)
nblocks ≤ min(m,n) || error("1 ≤ nblocks ≤ min(m,n)")
m = Ref{Int32}(m)
n = Ref{Int32}(n)
nz = Ref{Int32}(nnz(A))
irn, jcn, val = findnz(A)
irn = convert(Vector{Cint}, irn)
jcn = convert(Vector{Cint}, jcn)
nblocks = Ref{Int32}(nblocks)
control = mc66_control{Float64}()
seed = fa14_seed()
row_order = zeros(Cint, m[])
info = Ref{Cint}()
rowptr = zeros(Cint, nblocks[]+1)
column_order = zeros(Cint, n[])
colptr = zeros(Cint, nblocks[]+1)
netcut = Ref{Cint}()
rowdiff = Ref{Float64}()
kblocks = Ref{Cint}()
mc66d(m, n, nz, irn, jcn, nblocks, control, seed, row_order, info, rowptr, column_order, colptr, netcut, rowdiff, kblocks)
# mc66d_print_message(info, control)
return row_order, column_order
end
1 change: 1 addition & 0 deletions test/runtests.jl
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,7 @@ if JULIAHSL_isfunctional()
include("test_hsl_ma57.jl")
# include("test_hsl_ma57_patch.jl")
include("test_hsl_ma97.jl")
include("test_hsl_mc66.jl")
include("test_kb07.jl")
include("test_mc21.jl")
include("test_mc77.jl")
Expand Down
16 changes: 16 additions & 0 deletions test/test_hsl_mc66.jl
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,16 @@
@testset "hsl_mc66" begin
A = [1 1 0 0;
1 0 1 1;
1 1 0 0;
1 0 1 1]

B = [1 0 0 1;
1 0 0 1;
0 1 1 1;
0 1 1 1]
C = SparseMatrixCSC(A)
rp, cp = mc66(C, 2)
@test isperm(rp)
@test isperm(cp)
@test A[rp,cp] == B
end