stan-dev / stan-dev/stanc3

Explore variadic map_rect

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feature
Dominant language
OCaml
Stars
160
Forks
59
Avg merge
21h 45m
Merged PRs (30d)
26

Description

This was discussed by @SteveBronder and @wds15 and I at StanCon. It would be nice to have, but requires some serialization to move between MPI ranks. The compiler could potentially generate these functions, similar to how it currently does parameter reads?

Contributor guide

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First steps

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  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

No file, test, or entry point is named. Start by locating the existing map_rect compiler generation and the MPI serialization paths, then determine the design needed for variadic arguments; done means variadic map_rect can be generated and its values serialized between MPI ranks.

Written by the indexing model from the issue text.

Assessment

Tech stack
ocaml
Domain
compilers, distributed-systems
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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