07 08 2020 - openucx/ucc GitHub Wiki

Participants

• Manjunath Gorentla Venkata
• Sergey Lebedev
• Gil Bloch
• Alex Margolin
• Geoffroy Valle

Discussion on Schedule and Progress Engine

• Discussion slides
• Converged on the basic design and abstractions

AI: NVIDIA/Mellanox to present details and examples

Discussion on datatypes

• To support only basic datatypes, stride, and IOV (similar to UCX) in the initial version
• All other types are supported using third-party libraries (such as UDT that datatype WG is developing)
• Converged on using option 1 in the slides [1]

Discussion on collective buffer arguments

• Modifications to support MPI 4.0 BigCount proposal [2]
• Converged on using option 1 in the slides [1]

Next meeting

July 15th, 2020 (11 AM Pt)

References

• [1] https://github.com/manjugv/ucc_wg_public/blob/master/slides/gorentla_ucc_schedule_tasks_datatypes_July8th.pdf
• [2] https://github.com/mpi-forum/mpi-issues/issues/137