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Feature #1974

nocopy accelerated section multicast

Added by Eric Bohm 2 months ago.

Status:
New
Priority:
Normal
Category:
SMP
Target version:
Start date:
09/06/2018
Due date:
% Done:

0%


Description

It should be possible to reduce the number of copies required to implement a section multicast.

Especially if the entry method is receiving const data (i.e., readonly data). Ideally there should be only one copy per address space with refcounting to resolve cleanup when delivery has been completed at all leaves within the address space.

The current implementation creates one per PE, even for [readonly], and doesn't use RDMA to minimize pack/unpack cost.


Related issues

Related to Charm++ - Bug #1633: NodeGroup Broadcasts creates many copies of the message for point to point sends In Progress 07/14/2017

History

#1 Updated by Eric Bohm 2 months ago

  • Related to Bug #1633: NodeGroup Broadcasts creates many copies of the message for point to point sends added

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