Issues

• AMPI: run the 2018 mpich-suite pass list as a CI gate

  charmplusplus/charm#4103 · Filter by author lvkale opened on Oct 27, 2026

• AMPI: the return value of main after MPI_Finalize is lost (program always exits 0)

  charmplusplus/charm#4102 · Filter by author lvkale opened on Oct 27, 2026

• AMPI topology: neighbor order differs from MPI 3.1 section 7.6; Dist_graph_create probes with a user tag

  charmplusplus/charm#4101 · Filter by author lvkale opened on Oct 27, 2026

• AMPI datatypes: CkDDT_Struct ignores member trueLB; negative extents from Type_create_resized can terminate the program

  charmplusplus/charm#4100 · Filter by author lvkale opened on Oct 27, 2026

• AMPI intercommunicators: dup/split of an intercommunicator is unusable remotely; concurrent Intercomm_create can pair the wrong arrays; Comm_create_group by a subset segfaults

  charmplusplus/charm#4099 · Filter by author lvkale opened on Oct 27, 2026

• AMPI one-sided: shared and exclusive window locks, disp_unit bounds check, MPI_PROC_NULL, Fetch_and_op reply overrun, non-contiguous Get target, MPI_Win_flush

  charmplusplus/charm#4098 · Filter by author lvkale opened on Oct 27, 2026

• AMPI: MPI_Waitall over an MPI_Ialltoall request hangs; alltoall messages unordered; four more request-completion items

  charmplusplus/charm#4097 · Filter by author lvkale opened on Oct 27, 2026

• charmxi segfaults on a declared CkMigrateMessage constructor entry (null member in AST, isTramTarget)

  Bug
  charmplusplus/charm#4096 · Filter by author lvkale opened on Oct 27, 2026

• examples/charm++/zerocopy/entry_method_post_api/unreg/nodegroupTest fails with two processes on reconverse (hang under srun, 'Network completion failed' under lcrun)

  charmplusplus/charm#4080 · Filter by author lvkale opened on Oct 22, 2026
  1

  

• TreeLB asserts when an element migrates outside a load-balancing step

  charmplusplus/charm#4066 · Filter by author adityapb opened on Oct 21, 2026

• After the classic Converse deletion (#4061): dangling references and decisions on the Charm++ side

  charmplusplus/charm#4062 · Filter by author lvkale opened on Oct 20, 2026
  1

• Item 21: remove classic Converse and the classic machine layers from recharm

  charmplusplus/charm#4056 · Filter by author lvkale opened on Oct 18, 2026
  1

• Make singleton chares migratable

  enhancement
  charmplusplus/charm#4054 · Filter by author lvkale opened on Oct 17, 2026

• --build-shared on reconverse: libreconverse goes to lib_so/ but charmc links -lreconverse from lib/ (link fails)

  charmplusplus/charm#4049 · Filter by author lvkale opened on Oct 16, 2026

• Object id: a per-array full-length kind (49 unique bits, independent hashed home, no home key)

  enhancement
  charmplusplus/charm#4040 · Filter by author lvkale opened on Oct 13, 2026

• Zero-copy tests hang or abort on reconverse across 2 nodes; +lci_ndevices 4 trips CMK_NOCOPY_DIRECT_BYTES assert (pre-existing)

  charmplusplus/charm#4038 · Filter by author lvkale opened on Oct 12, 2026

• CkMulticast: delegation/multicast hangs under randomized message ordering (+randomized_msgq)

  Bug
  charmplusplus/charm#4032 · Filter by author lvkale opened on Oct 11, 2026

• Re-creating a destroyed array element by createhere: stale location entries misplace it and reject its epoch

  charmplusplus/charm#4031 · Filter by author lvkale opened on Oct 10, 2026

• Triage of the open pull requests against main before the branch is renamed classic

  cleanup
  charmplusplus/charm#4024 · Filter by author lvkale opened on Oct 9, 2026

• Zerocopy post API: the regular entry method can run inside the post entry method (always for node-to-self sends on reconverse)

  charmplusplus/charm#4023 · Filter by author lvkale opened on Oct 8, 2026

• Charm++ messages are enqueued twice on the receiving PE: switch the handler before the first enqueue (and reconverse's CldHandler drops priorities)

  charmplusplus/charm#4022 · Filter by author lvkale opened on Oct 8, 2026

• Revisit the 64-bit object id design: bit allocation, index-to-id mapping, and when an array is compressible

  charmplusplus/charm#3994 · Filter by author lvkale opened on Sep 18, 2026
  5

• CI: ucx-linux-x86_64_openpmix fails intermittently in ConverseInit with "ucp_ep_create failed: Invalid parameter" (3 times in 3 days)

  charmplusplus/charm#3993 · Filter by author lvkale opened on Sep 18, 2026

• Zerocopy post API: posting a buffer smaller than the source is allowed but unreported; larger is unchecked on the host path. Decide the contract.

  charmplusplus/charm#3989 · Filter by author lvkale opened on Sep 17, 2026
  1

• CUDA build: host zerocopy acks routed to the device handler (setNcpyOpInfo declared with 24 parameters, defined with 25)

  charmplusplus/charm#3983 · Filter by author lvkale opened on Sep 16, 2026
  2