MPC_4.3.0

[4.3.0] - 2025-11-18

Added

• Accelerators
  • Support CUDA
  • Support HIP
• Build
  • Add release with debug information optimization option (--relwithdebinfo)
• Low Comm / RED-SEA Project
  • Refactoring LCP module to better support suit protocols evolutions
  • Support for implementing protocols on top of rails (active message)
  • Support for multirail and fragmentation
  • Extension of rail API to support stream-like data transfers (tcp and ptl only)
  • Component-based transport with static loading
• MPI
  • Support Gather Allgather Bcast topological collectives
  • Support for MPI Tools interface

Changed

• Compilers
  • Activate privatization only if the underlying compiler is capable
• OMP
  • Enhancing support of OpenMP task and interactions with MPI
• MPCRUN
  • Change default count for resource request

Removed

• Low Comm
  • Remove deprecated Portals compatibility layer
• Threads
  • Remove NG scheduler used for research purposes

Deprecated

• Threads
  • Workshare support (needs GCC 7.3 to work)

Fixed

• Build
  • Add support for GCC 13, 14, 15 and C23
  • Fix --enable-debug-mem by correctly depending on libasan
• Compilers
  • Fix compilers wrong error code propagation
  • Fix wrong linking option with fortran in process mode
• Launch
  • Fix PMIx inter-node intra-node initialization
  • Add missing calls to PMIx_Finalize
  • Fix wrong termination with PMIx on abortion
• Low Comm
  • Fix PTL RMA completion system
  • Fix PTL RMA Flush operations
  • Fix LCP atomics
• MPI
  • Fix Exscan algorithm selection
  • Fix Pack and Unpack capabilities
  • Fix MPI_Self path
  • Accept NULL as bypass for MPI_T query functions
  • Fix persistent communications request initialization
  • Plenty of small bug fixes in all parts of MPC