[OMPI users] Any scientific application heavily using MPI_Barrier?

Hi, I am doing some research on MPI barrier operations. And I am ready to do some performance test. I wonder if there are any applications that using barriers a lot. Please let me know if there is any. Any comments are welcomed. Thanks! Shan

Re: [OMPI users] Any scientific application heavily using MPI_Barrier?

Thank you, Jeff and Ganesh. My current research is trying to rewrite some collective MPI operations to work with our system. Barrier is my first step, maybe I will have bcast and reduce in the future. I understand that some applications used too many unnecessary barriers. But here what I

[OMPI users] Does OpenMPI's MPI_Barrier automatically call the tuned version?

HI, Here I am again with questions about MPI_Barrier. I did some benchmark on MPI_Barrier and wondered if OpenMPI's implementation automatically calls the tuned version of MPI_Barrier, e.g. tree algorithm, when the number of nodes exceeds 4? Any thoughts are welcomed. :D Shan