minitest of FunctionWrappers.jl

test_FunctionWrappers.jl

#
# Test performance of FunctionWrappers.jl
#

f1(r) = exp(3.0*r)
f2(r) = cos(7*r)^2


# N evaluates of sin, cos; hard-coded
function test1(N)
    r = 0.234; s = 0.0
    for n = 1:N
        s += f1(r) + f2(r)
    end
    return s
end

# pass sin, cos as tuple ff = (sin, cos)
function test2(N, ff)
    r = 0.234; s = 0.0
    for n = 1:N, f in ff
        s += f(r)
    end
    return s
end

# return type asserted
function test3(N, ff)
    r = 0.234; s = 0.0
    for n = 1:N, f in ff
        s += f(r)::Float64
    end
    return s
end


tup = (f1, f2)


test1(10)
test2(10, tup)

println("Test1: hard-coded functions")
@time test1(1_000_000)
@time test1(1_000_000)
@time test1(1_000_000)

println("Test2: pass functions in a tuple")
@time test2(1_000_000, tup)
@time test2(1_000_000, tup)
@time test2(1_000_000, tup)

println("Test3: types are asserted")
@time test3(1_000_000, tup)
@time test3(1_000_000, tup)
@time test3(1_000_000, tup)


import FunctionWrappers
import FunctionWrappers: FunctionWrapper

typealias F64fun FunctionWrapper{Float64,Tuple{Float64}}
wrapped = (F64fun(f1), F64fun(f2))

test2(10, wrapped)
println("Test 4: pass functions as tuple of FunctionWrappers")
@time test2(1_000_000, wrapped)
@time test2(1_000_000, wrapped)
@time test2(1_000_000, wrapped)


# OUTPUT
# Test1: hard-coded functions
#   0.023688 seconds (131 allocations: 7.734 KB)
#   0.024503 seconds (5 allocations: 176 bytes)
#   0.025517 seconds (5 allocations: 176 bytes)
# Test2: pass functions in a tuple
#   0.318166 seconds (6.00 M allocations: 91.553 MB, 52.69% gc time)
#   0.149604 seconds (6.00 M allocations: 91.553 MB, 2.44% gc time)
#   0.138901 seconds (6.00 M allocations: 91.553 MB, 3.08% gc time)
# Test3: types are asserted
#   0.118090 seconds (4.00 M allocations: 61.139 MB, 3.34% gc time)
#   0.107509 seconds (4.00 M allocations: 61.035 MB, 2.61% gc time)
#   0.108348 seconds (4.00 M allocations: 61.035 MB, 2.52% gc time)
# Test 4: pass functions as tuple of FunctionWrappers
#   0.034954 seconds (5 allocations: 176 bytes)
#   0.037139 seconds (5 allocations: 176 bytes)
#   0.035320 seconds (5 allocations: 176 bytes)