Announcing Legion 24.09.0

[Elliott Slaughter]

Hi all,

I am pleased to announce that Legion 24.06.0 has been released. This is mainly a bug fix release, although note that there was a breaking change in the Point class, and that Legion Prof has switched to subcommands.

• Legion
  • Bug fixes for control replication and multi-node configurations
• Regent
  • Fixes for ROCm 6.0 code generation
• Tools
  • Legion Prof now uses subcommands (e.g., legion_prof view) to clarify which options apply to which actions
  • Legion Prof now tracks backtraces at the points where blocking wait calls are performed by the application
  • Legion Prof reports more detailed timing information for tasks
  • Legion Prof calculates clock skew between nodes and reports it when relevant
  • Commonly used features of Legion Prof are now enabled by default
  • The old Python Legion Prof implementation is no longer supported
• Realm
  • Point fields x, y, z and w have been replaced by methods
  • Support for launching CUDA tasks onto a CUDA stream asynchronously via cuCtxRecordEvent without the need of CUDA hijack
  • Support for CUDA fabric sharing
  • Support for host-to-host copies via CUDA DMA
  • Support for querying number of NUMA nodes from the NumaModuleConfig
  • Added reference counting for preimage operations
  • Make std::atomic as the default atomic implementation
  • Remove REALM_CXX_STANDARD, and bump the minimal requirement to C++17
  • Implemented an ABI stable wrapper for GASNetEX
  • Additional unit tests including CircularQueue, ReplicatedHeap, find_fastest_path, DynaamicTableAllocator, generate_gather_paths, TransferIteratorIndexSpace
  • Dead code cleanups and bug fixes

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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