To: J3                                                     J3/25-147
From: Bill Long
Subject:  OpenMP Report
Date: 2025-June-19


(Prepared Based on info from Deepak, who is the HPE rep for OpenMP.)


The OpenMP language committee has continued work towards an OpenMP 6.1
release in November 2026. There will be an F2F meeting in Paris Jun 23
- 27. Topics to be discussed include:

* revisit support for reserving parallelism in target regions

* clarify behavior relating to mapping Fortran pointer and allocatable
  dummy arguments to devices

* new loop transformation constructs such as fission and loop-blocking

* non-commutative reduction support

* some fixes to syntax for atomic structured blocks, particular on
  update vs capture

* support for scalable vector implementations

Recent updates for OpenMP 6.1 that have been accepted include:

* support for dynamic shared memory in targets (via dyn_groupprivate
  clause and related APIs)

* expand cases where declare target directives are implied for Fortran
  to include declarations in same source file

* extend fuse construct (loop fusion) to apply to loop nests with
  depth greater than 1

An updated Examples document with more OpenMP 6.0 examples is also in
the works and should be released within the next month or so. Includes
the following new examples:

* fuse construct

* stripe construct

* use of free-agent threads

* transparent task dependences (i.e., dependences between non-sibling
  tasks)

* extended "compound" directives

* target_data extensions