Announcing Legion release 23.03.0

[Elliott Slaughter]

Hi all,

We have a new release today. Release notes below.

• Build
  • Minimum supported CMake version is now 3.16. (Some optional features may continue to require even newer versions.)
  • Minimum supported GCC version is now 8.
  • Minimum supported CUDA version is now 10.
• Legion
  • Added support for padded layout constraints to provide scratch space in instances for tasks to use (see examples/padded_instances).
  • Added support for tiled layout constraints to provide an ability to layout instances by breaking down dimensions (see examples/tiling).
• Realm
  • An experimental UCX network backend has been added.
  • Updated the Kokkos interop to support Kokkos 4.0.
• Python
  • Support loading Legion as a library from a stock Python interpreter.
• Regent
  • Fixes to avoid leaking futures.
  • Improvements to Regent's predicate optimization.
• Tools
  • Legion Prof now supports a native viewer UI. Enable it with the viewer feature (e.g., cargo run --features=viewer) and use the flag --view.
  • Legion Prof now has better support for rendering a subset of available nodes. Pass all log files (from all nodes) into Legion Prof and add the --subnodes flag to specify which ones to render. This ensures all copies in/out of those nodes will be shown correctly.

--

Elliott Slaughter

"Don't worry about what anybody else is going to do. The best way to predict the future is to invent it." - Alan Kay