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Multi-channel collectives #6

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mcopik opened this issue Feb 16, 2023 · 0 comments
Open
3 tasks

Multi-channel collectives #6

mcopik opened this issue Feb 16, 2023 · 0 comments
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enhancement New feature or request

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@mcopik
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mcopik commented Feb 16, 2023

Some collective operations can benefit from switching protocols on the fly. An example is broadcast - S3 bandwidth will scale significantly linearly with the number of recipients, while a single sender would saturate its TCP bandwidth when sending multiple copies.

  • Introduce multi-channel support into collective operations.
  • Implement a simple heuristic-based selection of the channel.
  • Implement broadcast that switches channels depending on the number of clients and message size.
@mcopik mcopik added the enhancement New feature or request label Feb 16, 2023
@mcopik mcopik mentioned this issue Feb 16, 2023
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