07 29 2020 - openucx/ucc GitHub Wiki

Participants

• Manjunath Gorentla Venkata
• Sergey Lebedev
• Pavel Shamis
• Alex Margolin
• Valentine Petrov
• Ken Raffenetti

UCC BoF at SC 2020

• As Gilad suggested there will be no separate submission from UCC.

UCC repo available

• https://github.com/openucx/ucc
• Code style : Follow UCX coding style
• Need to explore scripts for compliance (clang based, astyle based)

Build system for UCC (GNU build tools vs cmake)

• Strong preference to use GNU build system because of its familiarity
• Need to explore 1) Does UCC need to support Windows in the near future? 2) If required, is GNU build system works well on windows?

UCC datatypes

• Preference towards having a separate API and implementation rather than integrated with UCP
  • No technical reason rather more of a convenience
• How to treat user-defined datatypes? (Val to send out example pseudocode)
• Add support for signed and unsigned ints
• Support size based datatypes

UCC reduction ops

• Please see the slides here [1]
• Make user-defined operation as first op (It might enable some compiler optimizations)
• Remove UNDEFINED and UNSUPPORTED operation types

References

[1] https://github.com/manjugv/ucc_wg_public/blob/master/slides/gorentla_ucc_wg_july_29.pdf