UCF Workshop 2018

Dates

December 10-13

Location

Austin, TX

Agenda (draft)

• Async progress for protocols (Yossi) Progress various protocols, such as rendezvous, stream, disconnect, RMA/AMO emulation using progress thread
• Thread safety, fine-grained locking (Yossi) Discuss what is needed in UCP and UCT to support better concurrency than a big global lock
• Support for shmem signaled put (Yossi) How to support new OpenSHMEM primitive - put with signal
• Upstream (rdma-core) support status (Yossi) Using UCX with Inbox drivers and latest rdma-core
• Xpmem support for tag matching (Yossi) Use 1-copy for expected eager messages using UCT tag-offload API
• Stream API and close protocol (Yossi) Using stream API as replacement for TCP and considerations of closing/flushing a connection
• High availability, failover (Yossi) How to implement fabric error recovery by using multiple devices/ports
• UCP API v2.0 (Yossi) Things we would like to change/optimize/cleanup in next UCP API, and backward compatibility considerations
• UCP Active message API (Yossi) Discuss active messages implementation on UCP level
• UCT component architecture (Yossi) Split UCT to modules, and load them dynamically, so missing dependencies would disable only the relevant transports.
• Multi-binary support for various uarch (Pasha)
• Internal memcpy, DPDK style ? (Pasha)
• MPICH + UCX - State of the union (ANL/Ken)
• OpenSHMEM context to worker mapping
• UCX+GPU: AMD and NVIDIA - AMD(Khaled, Brad) / NVIDIA (Akshay) 2hr
• Collectives (AMD, Khaled) 1hr
• UCX specification update, manpages (Brad) 1hr
• OSSS SHMEM with UCX update (Tony) 1hr
• UCT API freeze (Lanl / Nathan) 1hr
• Regression and testing (LANL, Mellanox) 1-2hr ( Roce, iwarp, tcp, etc. )
• Datatypes + GPUs (Nvidia)
• OpenMPI + UCX - State of the union (Mellanox/Yossi)
• UCX + task based (UTK ? George ?)