For another look at benchmarking parallel streams, see “ From Imperative Programming to Fork/Join to Parallel Streams in Java 8 ” by Raoul-Gabriel Urma and Mario Fusco (InfoQ, February 2014).

Sumatra will repurpose Java 8’s multi-core APIs called Stream or Lambda to enable both CPU or GPU computing, but it will need an extra layer of code for parallel execution.

The proposal explains that Java 8, unveiled in March 2014, introduced the first API specifically for lambda expressions, the Stream API, java.util.stream.