SIMD benchmark
Walter Bright
newshound2 at digitalmars.com
Sat Jan 14 22:56:16 PST 2012
I get a 2 to 2.5 speedup with the vector instructions on 64 bit Linux.
Anyhow, it's good enough now to play around with. Consider it alpha quality.
Expect bugs - but make bug reports, as there's a serious lack of source code to
test it with.
-----------------------
import core.simd;
void test1a(float[4] a) { }
void test1()
{
float[4] a = 1.2;
a[] = a[] * 3 + 7;
test1a(a);
}
void test2a(float4 a) { }
void test2()
{
float4 a = 1.2;
a = a * 3 + 7;
test2a(a);
}
import std.stdio;
import std.datetime;
int main()
{
test1();
test2();
auto b = comparingBenchmark!(test1, test2, 100);
writeln(b.point);
return 0;
}
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