What is the correct way to build and run cctm with parallel io?

[Roadelse]

Description
I tried to build and run CMAQ-5.4.0.2/CCTM using parallel io, and encountered runtime MPI errors, e.g., Invalid communicator, error stack
So I wonder what is the wrong through my steps below?

1. build zlib and hdf5 (enable-parallel)
2. build netcdf-c and netcdf-fortran with nc4 enabled and pnetcdf disabled (due to official doc)
3. build pnetcdf
4. build ioapi with netcdf-c, netcdf-fortran and pnetcdf
5. build CCTM with -Dparallel_io (succeed to compile)
6. download 2018 Bencharmark input
7. change run*script, adding "MPI:" before CCTM output filename
8. qsub the script
   then, the program corrupt in opening CONC file
   So, did I do sth. wrong which leads to error in running CCTM....exe?

[kmfoley]

Hi @Roadelse, Thank you for your interest in the Parallel I/O option in CMAQ. David Wong @dwongepa is the developer of CMAQ PIO and may be able to offer a solution for the problem you have encountered. You can contact him directly at wong.david-c@epa.gov.

May we also ask that you please post additional questions and issues about CMAQ on our Users' Forum: https://forum.cmascenter.org/
We use this forum for CMAQ questions because it has search and tagging features that make it easier for users to find answers to their questions and get connected to the appropriate developer.