Hi Hui - qthreads is the default now in most configurations.
I don't know what 'bound threads' are... maybe you're asking if they're allocated to particular cores (like with numactl)? If that's your question - I think so - with qthreads anyway. -michael On 6/4/15, 4:20 PM, "Hui Zhang" <[email protected]> wrote: >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 > > ------------------------------------------------------------------------------ _______________________________________________ Chapel-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/chapel-developers
