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Beginner example of using BenchmarkTools.jl
#From the post: https://randyzwitch.com/benchmarktools-julia-benchmarking/
using Random, OmniSci, BenchmarkTools, Base.Threads
#change defaults, since examples long-running
BenchmarkTools.DEFAULT_PARAMETERS.seconds = 200
BenchmarkTools.DEFAULT_PARAMETERS.samples = 5
#generate test data
gendata(x, T) = [rand(typemin(T):typemax(T)) for y in 1:x]
int64_10x6 = gendata(10^6, Int64)
int64_10x7 = gendata(10^7, Int64)
#Test whether broadcasting more/less efficient than pre-allocating results array
function preallocate(x)
v = Vector{OmniSci.TStringValue}(undef, length(x))
for idx in 1:length(x)
v[idx] = OmniSci.TStringValue(x[idx])
end
return v
end
function preallocate_inbounds(x)
v = Vector{OmniSci.TStringValue}(undef, length(x))
for idx in 1:length(x)
@inbounds v[idx] = OmniSci.TStringValue(x[idx])
end
return v
end
function preallocate_threads(x)
v = Vector{OmniSci.TStringValue}(undef, length(x))
Threads.@threads for idx in 1:length(x)
v[idx] = OmniSci.TStringValue(x[idx])
end
return v
end
function preallocate_threads_inbounds(x)
v = Vector{OmniSci.TStringValue}(undef, length(x))
Threads.@threads for idx in 1:length(x)
@inbounds v[idx] = OmniSci.TStringValue(x[idx])
end
return v
end
##RESULTS
julia> @benchmark v61 = OmniSci.TStringValue.($int64_10x6)
BenchmarkTools.Trial:
memory estimate: 297.55 MiB
allocs estimate: 6000002
--------------
minimum time: 752.568 ms (0.00% GC)
median time: 990.071 ms (25.20% GC)
mean time: 1.204 s (30.86% GC)
maximum time: 1.976 s (45.76% GC)
--------------
samples: 5
evals/sample: 1
julia> @benchmark v62 = preallocate($int64_10x6)
BenchmarkTools.Trial:
memory estimate: 297.55 MiB
allocs estimate: 6000002
--------------
minimum time: 748.719 ms (0.00% GC)
median time: 988.012 ms (25.31% GC)
mean time: 1.194 s (31.32% GC)
maximum time: 1.930 s (47.09% GC)
--------------
samples: 5
evals/sample: 1
julia> @benchmark v63 = preallocate_inbounds($int64_10x6)
BenchmarkTools.Trial:
memory estimate: 297.55 MiB
allocs estimate: 6000002
--------------
minimum time: 738.013 ms (0.00% GC)
median time: 967.184 ms (28.03% GC)
mean time: 1.215 s (31.80% GC)
maximum time: 2.088 s (45.90% GC)
--------------
samples: 5
evals/sample: 1
julia> @benchmark v64 = preallocate_threads($int64_10x6)
BenchmarkTools.Trial:
memory estimate: 297.32 MiB
allocs estimate: 5995489
--------------
minimum time: 249.117 ms (0.00% GC)
median time: 253.161 ms (0.00% GC)
mean time: 252.061 ms (0.00% GC)
maximum time: 254.137 ms (0.00% GC)
--------------
samples: 5
evals/sample: 1
julia> @benchmark v65 = preallocate_threads_inbounds($int64_10x6)
BenchmarkTools.Trial:
memory estimate: 297.34 MiB
allocs estimate: 5995887
--------------
minimum time: 241.585 ms (0.00% GC)
median time: 246.792 ms (0.00% GC)
mean time: 246.043 ms (0.00% GC)
maximum time: 249.109 ms (0.00% GC)
--------------
samples: 5
evals/sample: 1
julia> @benchmark v71 = OmniSci.TStringValue.($int64_10x7)
BenchmarkTools.Trial:
memory estimate: 2.77 GiB
allocs estimate: 57361655
--------------
minimum time: 26.316 s (70.63% GC)
median time: 39.332 s (76.28% GC)
mean time: 39.332 s (77.44% GC)
maximum time: 48.395 s (79.44% GC)
--------------
samples: 5
evals/sample: 1
julia> @benchmark v72 = preallocate($int64_10x7)
BenchmarkTools.Trial:
memory estimate: 2.77 GiB
allocs estimate: 57294866
--------------
minimum time: 27.064 s (71.96% GC)
median time: 38.925 s (76.22% GC)
mean time: 38.962 s (77.70% GC)
maximum time: 55.167 s (82.53% GC)
--------------
samples: 5
evals/sample: 1
julia> @benchmark v73 = preallocate_inbounds($int64_10x7)
BenchmarkTools.Trial:
memory estimate: 2.77 GiB
allocs estimate: 57304370
--------------
minimum time: 26.219 s (70.93% GC)
median time: 39.387 s (76.64% GC)
mean time: 38.960 s (77.58% GC)
maximum time: 54.665 s (82.19% GC)
--------------
samples: 5
evals/sample: 1
julia> @benchmark v74 = preallocate_threads($int64_10x7)
BenchmarkTools.Trial:
memory estimate: 2.66 GiB
allocs estimate: 54989344
--------------
minimum time: 2.717 s (0.00% GC)
median time: 17.659 s (78.92% GC)
mean time: 15.455 s (75.91% GC)
maximum time: 26.784 s (82.93% GC)
--------------
samples: 5
evals/sample: 1
julia> @benchmark v75 = preallocate_threads_inbounds($int64_10x7)
BenchmarkTools.Trial:
memory estimate: 2.72 GiB
allocs estimate: 56262010
--------------
minimum time: 2.641 s (0.00% GC)
median time: 16.659 s (76.25% GC)
mean time: 15.024 s (74.27% GC)
maximum time: 24.701 s (79.15% GC)
--------------
samples: 5
evals/sample: 1
#make embedded plots
using ECharts
x = ["broadcast", "pre-allocate", "pre-allocate/inbounds", "threads", "threads/inbounds"]
ymin = [752.568, 748.719, 738.013, 249.117, 241.585]
ymed = [990.071, 988.012, 967.184, 253.161, 246.792]
plot_10_6 = bar(x, hcat(ymin, ymed), ec_width = 1000, ec_height = 500)
seriesnames!(plot_10_6, ["Min", "Median"])
ymin2 = [26.316,27.064,26.219,2.717,2.641]
ymed2 = [39.332,38.925,39.387,17.659,16.659]
plot_10_7 = bar(x, hcat(ymin2, ymed2), ec_width = 1000, ec_height = 500)
seriesnames!(plot_10_7, ["Min", "Median"])
colorscheme!(plot_10_7, ("acw", "ZenAndTea"))
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