-
Notifications
You must be signed in to change notification settings - Fork 6
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
add benchmark with KLU and cusolverRF
- Loading branch information
1 parent
8bec3c6
commit e42fe9d
Showing
1 changed file
with
91 additions
and
0 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,91 @@ | ||
|
||
using CUDA | ||
using KernelAbstractions | ||
|
||
using ExaPF | ||
import ExaPF: AutoDiff | ||
|
||
using LazyArtifacts | ||
using LinearAlgebra | ||
using KrylovPreconditioners | ||
using KLU | ||
using CUSOLVERRF | ||
|
||
const LS = ExaPF.LinearSolvers | ||
|
||
# KLU wrapper | ||
LinearAlgebra.lu!(K::KLU.KLUFactorization, J) = KLU.klu!(K, J) | ||
|
||
function build_instance(datafile, device) | ||
polar = ExaPF.PolarForm(datafile, device) | ||
stack = ExaPF.NetworkStack(polar) | ||
# Instantiate Automatic Differentiation | ||
pflow = ExaPF.PowerFlowBalance(polar) ∘ ExaPF.PolarBasis(polar) | ||
jx = ExaPF.Jacobian(polar, pflow, State()) | ||
return ( | ||
model=polar, | ||
jacobian=jx, | ||
stack=stack, | ||
) | ||
end | ||
|
||
function benchmark_cpu_klu(datafile, pf_solver; ntrials=3) | ||
instance = build_instance(datafile, CPU()) | ||
# Initiate KLU | ||
klu_factorization = KLU.klu(instance.jacobian.J) | ||
klu_solver = LS.DirectSolver(klu_factorization) | ||
# Solve power flow | ||
tic = 0.0 | ||
for _ in 1:ntrials | ||
ExaPF.init!(instance.model, instance.stack) # reinit stack | ||
tic += @elapsed ExaPF.nlsolve!(pf_solver, instance.jacobian, instance.stack; linear_solver=klu_solver) | ||
end | ||
return tic / ntrials | ||
end | ||
|
||
function benchmark_gpu_cusolverrf(datafile, pf_solver; ntrials=3) | ||
instance = build_instance(datafile, CUDABackend()) | ||
# Initiate CUSOLVERRF | ||
rf_factorization = CUSOLVERRF.RFLU(instance.jacobian.J) | ||
rf_solver = LS.DirectSolver(rf_factorization) | ||
# Solve power flow | ||
tic = 0.0 | ||
for _ in 1:ntrials | ||
ExaPF.init!(instance.model, instance.stack) # reinit stack | ||
tic += @elapsed ExaPF.nlsolve!(pf_solver, instance.jacobian, instance.stack; linear_solver=rf_solver) | ||
end | ||
return tic / ntrials | ||
end | ||
|
||
function benchmark_gpu_krylov(datafile, pf_solver; ntrials=3) | ||
instance = build_instance(datafile, CUDABackend()) | ||
# Build Krylov solver | ||
n_blocks = 32 | ||
n_states = size(instance.jacobian, 1) | ||
n_partitions = div(n_states, n_blocks) | ||
jac_gpu = instance.jacobian.J | ||
precond = BlockJacobiPreconditioner(jac_gpu, n_partitions, CUDABackend(), 0) | ||
krylov_solver = ExaPF.KrylovBICGSTAB( | ||
jac_gpu; P=precond, ldiv=false, scaling=true, | ||
rtol=1e-7, atol=1e-7, verbose=0, | ||
) | ||
# Solve power flow | ||
tic = 0.0 | ||
for _ in 1:ntrials | ||
ExaPF.init!(instance.model, instance.stack) # reinit stack | ||
tic += @elapsed ExaPF.nlsolve!(pf_solver, instance.jacobian, instance.stack; linear_solver=krylov_solver) | ||
end | ||
return tic / ntrials | ||
end | ||
|
||
pf_algo = NewtonRaphson(; verbose=0, tol=1e-7) | ||
datafile = joinpath(artifact"ExaData", "ExaData", "case9241pegase.m") | ||
|
||
time_klu = benchmark_cpu_klu(datafile, pf_algo) | ||
time_cusolverf = benchmark_gpu_cusolverrf(datafile, pf_algo) | ||
time_krylov = benchmark_gpu_krylov(datafile, pf_algo) | ||
|
||
println("Benchmark powerflow with $(basename(datafile)):") | ||
println(" > KLU (s) : ", time_klu) | ||
println(" > CUSOLVERRF (s) : ", time_cusolverf) | ||
println(" > KRYLOV (s) : ", time_krylov) |