[mpich-discuss] MPI_Win_free failed

[Pavan Balaji]

On 07/19/2013 05:26 PM, Sufeng Niu wrote:
> MPI_Win_create(image_buff, 2*image_info->image_size * sizeof(uint16),
> sizeof(uint16), MPI_INFO_NULL, *MPI_FOR_WORLD, win);  // MPI_FOR_WORLD
> is custom defined comm

Check if *MPI_FOR_WORLD is valid (or COMM_NULL).

> I just free it as: MPI_Win_free(&win);

Check if win is valid (or WIN_NULL).

In general, these are errors a debugger can catch.  Please try that.

  -- Pavan

-- 
Pavan Balaji
http://www.mcs.anl.gov/~balaji