On Thu, Apr 7, 2016 at 9:28 AM, Dave Love <d.l...@liverpool.ac.uk> wrote:
> ... > Anyhow, the lesson seems to be that you shouldn't use mpi_wtime if you > need decent precision or realistic mpi_wtick across implementations. > > I certainly hope that this isn't the lesson anyone learns from this. It is extremely important to application developers that MPI_Wtime represent a "best effort" implementation on every platform. Other implementations of MPI have very accurate counters. Jeff -- Jeff Hammond jeff.scie...@gmail.com http://jeffhammond.github.io/
