PCU Object and nompi stub #430
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This commit adds a MPI state that's separate from the global variables to the internal pcu_mpi interfaces. The user level PCU interface remains unchanged. However, this change lays the groundwork for PCU2 that will not make use of global state. This is important for some use cases like working around the spectrum-mpi comm_dup bug. The removal of global state also improves testability and modularity of this code.
Throughout the code base it was assumed that the mpi functions were implemented through pmpi and so no other implementation really could have been implemented. This change just removes the complexity from having the vtable.
This commit allows the pcu_mpi to be initialized into a stack variable rather than allways allocating on the heap.
This commit adds a MPI state that's separate from the global variables to the internal pcu_mpi interfaces. The user level PCU interface remains unchanged. However, this change lays the groundwork for PCU2 that will not make use of global state. This is important for some use cases like working around the spectrum-mpi comm_dup bug. The removal of global state also improves testability and modularity of this code.
Throughout the code base it was assumed that the mpi functions were implemented through pmpi and so no other implementation really could have been implemented. This change just removes the complexity from having the vtable.
This commit allows the pcu_mpi to be initialized into a stack variable rather than allways allocating on the heap.
pcu-object changes
…pcu-object Merging pcu-object
pcu-object fixed warnings
…lete merge with nompi
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Hi @flagdanger. Is this the version the removes the 'old' PCU C api and has 'breaking' changes? If so, would you please add that to the PR description? |
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breaking changes addressed in #433 |
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This version uses the new PCU Object interface that removes uses of the old pcu api, but does not remove the api entirely or cause breaking changes.