On Mon, 23 Aug 2021 23:18:28 GMT, Sandhya Viswanathan <sviswanathan@openjdk.org> wrote:
This pull request adds a micro benchmark for Vector API. The Black Scholes algorithm is implemented with and without Vector API. We see about ~6x gain with Vector API for this micro benchmark using 256 bit vectors.
Some benchmark comments. test/micro/org/openjdk/bench/jdk/incubator/vector/BlackScholes.java line 91:
89: static float A4 = -1.821255978f; 90: static float A5 = 1.330274429f; 91: static float PI = (float)Math.PI;
Want to make these `static final`? test/micro/org/openjdk/bench/jdk/incubator/vector/BlackScholes.java line 134:
132: 133: @Benchmark 134: public void scalar_black_scholes(Blackhole bh) {
So there is a `Blackhole` argument here, but what is actually blackholed? AFAICS, stores to `call` and `put` are roughly okay to avoid dead-code elimination on these paths. ------------- PR: https://git.openjdk.java.net/jdk/pull/5234