[FLASH-USERS] MPI issue

[Tony Curtis]

> On Jul 2, 2021, at 12:06 PM, Christos Stavrou <cstavrou at magdrivespace.com> wrote:
> 
> Hi all,
> 
> Thank you to Tony for his help earlier; this next issue may or may not be related with the one I had earlier (compiling with GCC10).
> 
> At the moment, I can successfully run setup to create the object directory, enter the object directory and run make successfully, albeit with a fair amount of warnings (e.g. "Warning: Type mismatch between actual argument at (1) and actual argument at (2) (REAL(8)/INTEGER(4)" from a call to MPI_Bcast). 
> 
> When I subsequently try to run the code, it goes through some of the initialisation, but stops and gives me an MPI-related error message. The example below is for the case of:
> 
> ./setup Sedov -auto
> cd object
> make
> 
> The error message:
> 
> Initial dt verified
>  *** An error occurred in MPI_Comm_create_keyval
>  *** reported by process [222691329,0]
>  *** on communicator MPI_COMM_WORLD
>  *** MPI_ERR_ARG: invalid argument of some other kind
>  *** MPI_ERRORS_ARE_FATAL (processes in this communicator will now abort,
>  ***    and potentially your MPI job)
> 

How did you run the program?  Is this a cluster or a single machine?

Looks like you’re using an ubuntu-installed mpich, so that should be good to go.

Tony

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