Merge branch 'factorize-matrices-variable-bbmbbm' of https://github.c…

…om/JoshuaLampert/DispersiveShallowWater.jl into factorize-matrices-variable-bbmbbm
JoshuaLampert · May 23, 2024 · 3a07113 · 3a07113
2 parents b999abd + 5bf3378
commit 3a07113
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/equations/bbm_bbm_variable_bathymetry_1d.jl b/src/equations/bbm_bbm_variable_bathymetry_1d.jl
@@ -202,7 +202,8 @@ function create_cache(mesh, equations::BBMBBMVariableEquations1D,
     K = Diagonal(D .^ 2)
     if solver.D1 isa PeriodicDerivativeOperator ||
        solver.D1 isa UniformPeriodicCoupledOperator
-        invImDKD = lu(I - 1 / 6 * sparse(solver.D1) * K * sparse(solver.D1))
+        sparse_D1 = sparse(solver.D1)
+        invImDKD = lu(I - 1 / 6 * sparse_D1 * K * sparse_D1)
     elseif solver.D1 isa PeriodicUpwindOperators
         invImDKD = lu(I - 1 / 6 * sparse(solver.D1.minus) * K * sparse(solver.D1.plus))
     else