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CHANGELOG.md

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Changelog for rocSHMEM

Unreleased - rocSHMEM 3.x.x for ROCm 7.x.x

Added

  • Allow for IPC, RO, GDA backends to be selected at runtime
  • Added the GDA conduit for different NIC vendors
    • AMD Pensando IONIC
    • Broadcom BNXT_RE (Thor 2)
    • Mellanox MLX5 (IB and RoCE ConnectX-7)
  • Added new APIs:
    • rocshmem_get_device_ctx
    • rocshmem_ctx_pe_quiet
    • rocshmem_pe_quiet

Changed

  • The following APIs have been deprecated:
    • rocshmem_wg_init
    • rocshmem_wg_finalize
    • rocshmem_wg_init_thread
  • rocshmem_ptr can now return non-null pointer to a shared memory region when the IPC transport is available to reach that region. Previously, it would return a null pointer.
  • ROCSHMEM_RO_DISABLE_IPC was renamed to ROCSHMEM_DISABLE_MIXED_IPC. This enviroment variable was not documented for prior releases. It is now documented to inform users who were using this undocumented feature.

Removed

  • rocSHMEM no-longer requires rocPRIM and rocThrust as dependencies
  • Removed MPI compile-time dependency

Known issues

  • Only a subset of rocSHMEM APIs are implemented for the GDA conduit

rocSHMEM 3.0.0 for ROCm 7.0.0

Added

  • Added the Reverse Offload conduit
  • Added new APIs:
    • rocshmem_ctx_barrier
    • rocshmem_ctx_barrier_wave
    • rocshmem_ctx_barrier_wg
    • rocshmem_barrier_all
    • rocshmem_barrier_all_wave
    • rocshmem_barrier_all_wg
    • rocshmem_ctx_sync
    • rocshmem_ctx_sync_wave
    • rocshmem_ctx_sync_wg
    • rocshmem_sync_all
    • rocshmem_sync_all_wave
    • rocshmem_sync_all_wg
    • rocshmem_init_attr
    • rocshmem_get_uniqueid
    • rocshmem_set_attr_uniqueid_args
  • Added dlmalloc based allocator
  • Added XNACK support
  • Added support for initialization with MPI communicators other than MPI_COMM_WORLD

Changed

  • Changed collective APIs to use _wg suffix rather than _wg_ infix

Resolved Issues

  • Resolved segfault in rocshmem_wg_ctx_create, now provides nullptr if ctx cannot be created

rocSHMEM 2.0.1 for ROCm 6.4.2

Resolved Issues

  • Resolved incorrect output for rocshmem_ctx_my_pe and rocshmem_ctx_n_pes
  • Resolved multi-team errors by providing team specific buffers in rocshmem_ctx_wg_team_sync
  • Resolved missing implementation of rocshmem_g for IPC conduit