How to import low-level API in MPI.jl

Specific Domains Julia at Scale
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1

I wanted to use one of the low-level APIs MPI.API.MPI_Reduce_scatter from MPI.jl. But I failed to import it using

using MPI: API

or

using MPI
MPI.API.MPI_Reduce_scatter(...)

Does anyone know how to use it?

2

The 2nd me should work. What error do you get?

Also please consider just opening a PR to MPI.jl: addd the function and a simple test, and I will happily make a new release with it included.

1 Like
3

Thanks for replying. By the second way, I got

julia> using MPI

julia> MPI.API.MPI_Reduce_scatter()
ERROR: UndefVarError: API not defined
Stacktrace:
 [1] getproperty(x::Module, f::Symbol)
   @ Base ./Base.jl:35
 [2] top-level scope
   @ REPL[2]:1
4

What version of MPI.jl are you using?

1 Like
5

v0.19.2

6

It works after updating MPI