Re: [OMPI users] Performance Issues with OpenMPI v1.5.1 MPI_Barrier on Windows XP SP3

2011-02-24 Thread David Zhang
How many cores does your processor has? On Wed, Feb 23, 2011 at 8:52 PM, Li Zuwei wrote: > Dear Users, > > I'm measuring barrier synchronization performance on the v1.5.1 build of > OpenMPI. I am currently trying to measure synchronization performance on a > single node, with 5 processes. I'm g

Re: [OMPI users] Performance Issues with OpenMPI v1.5.1 MPI_Barrier on Windows XP SP3

2011-02-23 Thread Li Zuwei
Dear Users, I'm measuring barrier synchronization performance on the v1.5.1 build of OpenMPI. I am currently trying to measure synchronization performance on a single node, with 5 processes. I'm getting pretty weak results as follows: Testing procedure - initialize the timer at the start of the