You might take a look at the other profiling tools:
On Nov 5, 2012, at 1:07 AM, huydanlin <huydanlin_at_[hidden]> wrote:
> My objective is I want to calculate the time perform by MPI_Send & MPI_Recv . In case MPI_Send, i can put the timer before the MPI_Send and after its. like this "
> t2= MPI_Wtime
> tsend= t2 -t1; it mean when the message go to the system buffer, the control return to the sending process. So I can measure the MPI_Send.
> But my problem in MPI_Recv. If i do like MPI_Send( put the timer before and after MPI_Recv) I think it wrong. Because we dont know exactly when the message reach the system buffer in receiving side.
> So how can we measure the MPI_Recv operation time( time when the message is copied from the system buffer to the receive buffer) ?
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