mpi_alltoallv and mpi_alltoallw

gfd-dennou-club / ruby-mpi

A ruby binding of MPI

MIT License

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mpi_alltoallv and mpi_alltoallw #8

Open bkmgit opened 3 years ago

bkmgit commented 3 years ago

Consider adding mpi_alltoallv and/or mpi_altoallw

seiya commented 3 years ago

I am going to add some functions including mpi_alltoallv.

To implement mpi_alltoallw, handling multiple types is necessary. In the current implementation, the data type is determined by the buffer type (type of NArray). A NArray object has only one data type. Therefore, it is difficult to handle multiple types with the current way. What kinds of API do you think are possible for mpi_alltoallw?

bkmgit commented 3 years ago

Happy to implement mpi_alltoallv if that is ok, though will likely need some review

Probably before adding many other MPI functions, may want to also look at:

Using Numo NArray
Ruby Bindings for UPC
Ruby Bindings for C specification of XcalableMP
Direct build on top of Gasnet
Direct build on top of GPI 2
Direct build on top of UCS
Direct build on top of DVM System
Good ways to architect a distributed memory version of Rumale

seiya commented 3 years ago

I added some functions and pushed the blanch (feature/mpi_functions). Could you confirm that the alltoallv is working as expected?

bkmgit commented 3 years ago

Thanks will check it out.