Troubleshooting
Problem
Compilation of Fortran code that uses Parallel Environment (PE) Fortran 90 type-checking module mpi.mod (via USE MPI statement) fails with XL Fortran Enterprise Edition for AIX, V11.1 and earlier versions.
Symptom
Consider Fortran source code that includes Parallel Environment (PE) Fortran 90 type-checking module mpi.mod:
program test
use mpi
print *, 'testing mpi'
stop
end program test
Compiling this source code with XL Fortran Enterprise Edition for AIX, V11.1 or earlier version will cause compile time error:
1514-220 (S) Module symbol file for module mpi is in a format not recognized by this compiler. Please compile the module with this compiler.
Cause
The problem is caused by older version of XL Fortran compiler.
Resolving The Problem
For new programs:
Compile the program with XL Fortran compiler Version 12.1 or later.
For existing programs:
Recompile the program with XL Fortran compiler Version 12.1 or later. Note that if you have an existing Fortran MPI program that is running without errors, there is no need to recompile it. Since the program is already running correctly, compiling it with the Fortran 90 module would provide no benefit.
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Document Information
Modified date:
08 August 2018
UID
swg21500619