Futhark is a concurrency programming language that belongs to the ML family.

Added by:

The internal representation of parallel structures has been revised and optimized. With rare exceptions, this can have a significant impact on performance.
There is now support for structurally typed sums and pattern matching. But there remain some problems with sum-type arrays, which themselves contain arrays.
Significantly reduced compilation time for some large programs.
Manual type parameters no longer need to be exhaustive.
The display of the rotate parameter has been simplified.

Removed

The prefix operator ~ is no longer used, but ! can now be used to perform bitwise negation of integers.

The --futhark option for futhark bench and futhark test now defaults to the binary used for the subcommands themselves.
The deprecated futhark -t option (which performed the same function as futhark check) has been removed.
stream_map became map_stream, and stream_red became reduce_stream.

futhark test now “understands” -no-tuning as originally intended.
The futhark bench and futhark test commands now interpret --exclude as expected.
The Python and C# backend can now read binary data correctly.