How to use Intel AVX in Java?

Question

How to use Intel AVX vector instruction set from Java? This is a simple question, but the answer seems hard to find.

Answer 1

As I know, most modern Java JVM-JITMs do not support automatic vectorization or just do it for very simple loops, so you're out of luck.

In the implementation of Mono.NET was Mono.Simdfor the manual emission of vector code, and then MS introduced System.Numeric.Vectors. Unfortunately, in Java there is nothing similar. I don’t know if the Java vector class is vectorized using SIMD or not, but I don’t think so.

, AVX, - JNI. C C++ Java

Scala - JVM, JVM 40

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API

, jdk.incubator.vector, , , , , .

https://openjdk.java.net/jeps/338

• Vector API Developer Java *
• Oracle Intel Java API SIMD

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• SIMD / Java?
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• Java

Answer 2

Java, , JavaCV. Intel, , NVIDIA.

Answer 3

, , . AVX2 JVM String, , Haswell Xeon v3 .

https://software.intel.com/en-us/articles/java-application-performance-improvement-with-intel-xeon-processor-e7-v3

https://en.wikipedia.org/wiki/Advanced_Vector_Extensions#CPUs_with_AVX2

Ryzen 3/Epyc Rome AVX2 AMD: https://www.anandtech.com/print/14525/amd-zen-2-microarchitecture-analysis-ryzen-3000-and-epyc -

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Answer 4

- Aparapi Intel OpenCL. ( , , OpenCL.)

- JNI ++, AVX .

Answer 5

yeppp. Java - SIMD.

http://www.yeppp.info