[1] says: > Vectorization: Drill takes advantage of the latest SIMD instructions > available in modern processors.
I have done a quick browse of the source code. The following list are the clues which may relate with vectorization: - Drill source use Arrays.fill, Arrays.copyOf and Arrays.copyOfRange. - Project in exec/vector folder uses hppc. And hppc use Arrays.copyOf and Arrays.fill. [2] shows that Arrays.fill, Arrays.copyOf and Arrays.copyOfRange are intrinsic methods. [3] shows that such intrinsics can be optimized by the JVM to use SIMD methods. Is my understanding correct? [1]: https://drill.apache.org/faq/ [2]: http://hg.openjdk.java.net/jdk8/jdk8/hotspot/file/87ee5ee27509/src/share/vm/classfile/vmSymbols.hpp [3]: http://psy-lob-saw.blogspot.hk/2015/04/on-arraysfill-intrinsics-superword-and.html
