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[MLIR] Extend MPI dialect #123255

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[MLIR] Extend MPI dialect #123255

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mofeing
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@mofeing mofeing commented Jan 16, 2025

cc @tobiasgrosser @wsmoses

this PR adds some new ops and types to the MLIR MPI dialect. the goal is to get the minimum required ops here to get a project of us working, and if everything works well, continue adding ops to the mpi dialect on subsequent PRs until we achieve some level of compliance with the MPI standard.

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@wsmoses wsmoses requested a review from ftynse January 21, 2025 17:48
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wsmoses commented Jan 21, 2025

@mofeing I think you need to have at least some round trip IR tests

// ISendOp
//===----------------------------------------------------------------------===//

// TODO what about request handler?
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Conceptually, it should be a result of this op.

There are also some quirks of the design that this inherits from existing op that I'd model differently, but that's alright for now.

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I've added it as result. The question is whether we should add MPI_Request_free as an op.

@ftynse ftynse mentioned this pull request Jan 21, 2025
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@mofeing mofeing changed the title Extend MPI dialect [MLIR] Extend MPI dialect Jan 25, 2025
Optional<MPI_Comm> : $comm
);

let regions = (region SizedRegion<1>:$op);
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@tobiasgrosser is there some way to impose a trait to input regions? speaking with @vchuravy, he suggested that we might need the region (that implements the MPI op) to be "pure"; i.e. independent from the whatever is above the region.

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You add IsolatedFromAbove to the traits of an Op.

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