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comparison benchmarks/laplace_benchmark.jl @ 876:4f3924293894 laplace_benchmarks

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Add examples and benchmarks folders
author Vidar Stiernström <vidar.stiernstrom@it.uu.se>
date Thu, 27 Jan 2022 11:00:31 +0100
parents laplace_benchmark.jl@9929c99754fb
children
comparison
equal deleted inserted replaced
875:067a322e4f73 876:4f3924293894
1 using Sbplib.Grids, Sbplib.SbpOperators, Sbplib.LazyTensors, Sbplib.RegionIndices
2 using Profile, BenchmarkTools
3
4 function apply_laplace!(f, u, L, inds)
5 for I in inds
6 f[I] = (L*u)[I]
7 end
8 end
9
10 apply_laplace!(f, u, L) = apply_laplace!(f, u, L, eachindex(u))
11
12 region_indices(L, N, ::Lower) = map(x->Index{Lower}(x),1:closure_size(L))
13 region_indices(L, N, ::Interior) = map(x->Index{Interior}(x),closure_size(L)+1:N-closure_size(L))
14 region_indices(L, N, ::Upper) = map(x->Index{Upper}(x),N-closure_size(L)+1:N)
15
16 function get_region_indices(L,N)
17 ind_lower = region_indices(L, N, Lower())
18 ind_interior = region_indices(L, N, Interior())
19 ind_upper = region_indices(L, N, Upper())
20 return (ind_lower, ind_interior, ind_upper)
21 end
22
23 function apply_laplace_regions!(f, u, L, region_inds)
24 apply_laplace!(f, u, L, region_inds[1])
25 apply_laplace!(f, u, L, region_inds[2])
26 apply_laplace!(f, u, L, region_inds[3])
27 end
28
29 # Domain
30 N = 4001
31 g = EquidistantGrid(N,0.,1.)
32
33 # Operators
34 L = Laplace(g,sbp_operators_path()*"standard_diagonal.toml"; order=4)
35 u = evalOn(g,x->x^2)
36 f = similar(u)
37
38 apply_laplace!(f,u,L) #ensure compilation
39 @btime apply_laplace!(f,u,L)
40 rinds = get_region_indices(L,N)
41 apply_laplace_regions!(f,u,L,rinds) #ensure compilation
42 @btime apply_laplace_regions!(f,u,L,rinds)