Hello, Michael 1. I know Chapel 1.10 used fifo by default, how about Chapel 1.11 ? 2. Are the threads in Chapel 'bound threads' ?
thanks On Thu, Jun 4, 2015 at 1:31 PM, Michael Ferguson <[email protected]> wrote: > Hi Hui - > > You might look at runtime/include/chpl-tasks.h, in particular > chpl_task_startMovedTask and chpl_task_addToTaskList and friends. > > If you're using CHPL_TASKS=fifo, a method that works with > pthreads *should* work... > > -michael > > > On 6/4/15, 1:25 PM, "Hui Zhang" <[email protected]> wrote: > > >Hello, Michael > > > > > >No, I'm actually trying to do that with my own code...I've had success > >with explicitly-created threads like pthread, but for Chapel, I don't > >know exactly the way threads get spawned > > since it's implicit... > > > > > > > >On Thu, Jun 4, 2015 at 12:39 PM, Michael Ferguson > ><[email protected]> wrote: > > > >Hi Hui - > > > >Are you trying to use gprof? How are you monitoring the performance? > > > >AFAIK, gprof in particular just doesn't work with multiple threads... > >I've heard that the profiler with gperftools works better, > >but I don't have any experience with it myself. > > > >Cheers, > > > >-michael > > > >On 6/4/15, 12:13 PM, "Hui Zhang" <[email protected]> wrote: > > > >>Hello, > >> > >> > >> > >>I was trying to monitor the performance of a simple Chapel code, but even > >>I don't use parallelism in the code(like forall, coforall...), just as > >>simple as a single-thread C program, > >> I found Chapel still creates a worker thread for the user code, and the > >>master thread to initialize and finalize the program. Therefore, I want > >>to know : > >> > >>1. When and how the worker thread is spawned ? > >>2. What's your suggestion to monitor the worker thread since all I'm > >>getting now is from the master thread, which isn't useful to me. > >> > >>3. Further, if parallelism is used(like forall,etc), is there any way to > >>monitor all the threads ? > >> > >> > >> > >>Thanks > >> > >> > >> > >>-- > >>Best regards > >> > >> > >>Hui Zhang > >> > >> > > > > > > > > > > > > > > > > > > > >-- > >Best regards > > > > > >Hui Zhang > > > > > > -- Best regards Hui Zhang
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