Re: [OMPI users] [EXTERNAL] MPI_THREAD_SINGLE vs. MPI_THREAD_FUNNELED

2013-10-23 Thread Jai Dayal
t wanted to get some clarity as to what exactly MPI_THREAD_SINGLE meant. Brian's answer seems to make perfect sense. Thanks! On Wed, Oct 23, 2013 at 1:47 PM, Jeff Hammond wrote: > On Wed, Oct 23, 2013 at 12:02 PM, Barrett, Brian W > wrote: > > On 10/22/13 10:23 AM, "Jai Day

[OMPI users] MPI_THREAD_SINGLE vs. MPI_THREAD_FUNNELED

2013-10-22 Thread Jai Dayal
Hi All, I, for the life of me, can't understand the difference between these two init_thread modes. MPI_THREAD_SINGLE states that "only one thread will execute", but MPI_THREAD_FUNNELED states "The process may be multi-threaded, but only the main thread will make MPI calls (all MPI calls are funn

Re: [OMPI users] Problem with MPI_BARRIER

2011-09-08 Thread Jai Dayal
what tick value are you using (i.e., what units are you using?) On Thu, Sep 8, 2011 at 10:25 AM, Ghislain Lartigue < ghislain.larti...@coria.fr> wrote: > Thanks, > > I understand this but the delays that I measure are huge compared to a > classical ack procedure... (1000x more) > And this is repe

[OMPI users] error on malloc

2011-09-05 Thread Jai Dayal
Hi all, I've been beating my head on this for quite a while now. I don't have this problem when running with 1,2, or 3 procs, however, once I get to 4 or beyond, I have a problem. When I call malloc, I get this error: txserver:11055 terminated with signal 11 at PC=2b46886bc18a SP=7fff20f51030.