Lets say I have a code like this start = MPI_Wtime() <Run the solver> stop = MPI_Wtime();
What happens when right after start=MPI_Wtime(), the timeslice of the process ( from the operating system's perspective not the MPI process) is over, and the operating system schedules a next process, after saving the context switch, and eventually this application would resume, once its process is scheduled back by the os. Does MPI_Wtime() takes care of storing/updating the time when this happens? Of course, part of the answer lies in the implementation of Wtime. On Fri, May 4, 2012 at 3:53 AM, Jeff Squyres <jsquy...@cisco.com> wrote: > On May 3, 2012, at 2:02 PM, Jingcha Joba wrote: > > > Not related to this question , but just curious, is Wtime context switch > safe ? > > Not sure exactly what you're asking here...? > > -- > Jeff Squyres > jsquy...@cisco.com > For corporate legal information go to: > http://www.cisco.com/web/about/doing_business/legal/cri/ > > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users >
