Mpi collective#1

Draft

eessmann wants to merge 64 commits intomasterfrom

mpi-collective

Commits on Nov 5, 2025

Testing Added and Flattening message buffer
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MPI AlltoAll used for communicating node_ids
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Initial implementation
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Fixed Memory leak
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Possible fix
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MPI_Alltoallv is silly function
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Removed at()
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Memory leak found and fixed
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parhip works
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MPI to C data mapping
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mpi_pack fixed
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Unneeded constructors and destructors removed
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Update parallel_contraction.cpp
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Cray doesn't have spans
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Cray cannot deduce template types
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Testing off by default
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Update parallel_contraction.cpp
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Enable testing, add {cinttypes}, and update CRAY-C MPI handling
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Clean up formatting and adding documentation
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Removed original implementation
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Fixed CMake so that flags work correctly
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Removed unused mpi_tools::alltoallv
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Removing Duplicated function from class header
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Custom MPI Datatypes
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hashed graph updated
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Update CMakeLists.txt
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WIP on mpi-collective
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Isolated OpenMP
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Custom type fix
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Added reflection and custom datatypes fixed
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Clean up
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All_to_all return type fixed
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Fixed MPI types
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Cleaning up types
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MPI type cleanup working
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Tidy up of mutex locks
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Added LTO
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Fixed include
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Fixed tests
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Fixing concept warnings
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Fixed handle leak
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Add Dev container for test
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Fixing ODR issues
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Linking fixed
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Sanitisers
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Fixing formating and clang-tidy
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Cleaning up
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Compiles on Archer
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Namespace added
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Clang-tidy errors fixed
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Parhip namespace
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Unity builds working
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Fixing compiling flags
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Project setup macro
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cmake formatted
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Added options throughout
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Error reverted
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Ranged-based loops
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LTO on Cray

Erich Essmann
authored and
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Project setup macro
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Testing off for caliper run
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No more unity
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No Warning in release mode
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Edge list converter fixed
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