Synchronized Time Measurements with MPI_Wtime() RRS feed

  • Question

  • Hello,

    I got no answer in the thread for server developers. My question was how to get a synchronized cluster time

    Now I try another way:

    I found the function MPI_Wtime() for time measurements. Unfortunately the value MPI_WTIME_IS_GLOBAL is  set to 0, which means time measurement is not synchronized among the nodes.

    Is there a way to change this value to 1?

    According to some documentation I cannot use MPI_Attr_put() to change this value.


    Thx for your help!


    Tuesday, July 27, 2010 3:49 PM


  • There is no way to change MPI_WTIME_IS_GLOBAL to 1, as there is no global time facility in MSMPI.


    • Marked as answer by Don Pattee Wednesday, October 6, 2010 11:43 PM
    Monday, August 30, 2010 5:42 PM