I have a c function that requires me to pass a comm pointer to the function I converted the function using Clang.jl showed below function Comm(comm_handle) ccall((:Comm, librarypath), Cint, (Ptr{Cvoid}), comm_handle) end But I am getting an error if I pass MPI.MPI_COMM_WORLD to the function …

How can I pass the pointer of MPI communicator to c function?

dora_ho September 11, 2022, 8:55pm 4

Thanks for the information!
I can pass the pointer right now.

Topic		Replies	Views
Can I pass MPI.jl communicator to the Fortran side? General Usage fortran , mpi	4	749	February 16, 2022
C interface for void** New to Julia	6	1862	February 7, 2020
Call C Function that takes NULL as an argument New to Julia ccall , c	16	1314	June 18, 2021
Pointer to Julia function in ccall General Usage	4	1308	May 17, 2017
Calling a C function which return a pointer to struct General Usage ccall	3	869	October 19, 2018