MPI linking error (unresolved external symbol)

Accelerated Computing HPC Compilers Legacy PGI Compilers
1

Could you please check if there aren’t any bugs in PGI Fortran compiler with the following three MPI subroutines?

MPI_BCAST
MPI_RECV
MPI_SEND

Linking error only happens when these subroutines take character variables as their argument.

For other types, they just work fine.

2

Hi CNJ,

Can you clarify what you mean by “character variables as their argument” any maybe provide an example?

These routines expect a buffer as the first argument with integers as the other arguments. MPI_Bcast

Thanks,
Mat

3

It seems that this issue occurs at 32-bit environment only.

After I changed my Windows to 64-bit, this linking error doesn’t happen anymore.