[Openmp-dev] Does LLVM OpenMP reuse threads by pooling?

[J Z via Openmp-dev]

On Wednesday, September 16, 2015, Churbanov, Andrey <
Andrey.Churbanov at intel.com> wrote:

> > > Does LLVM's OpenMP implemented this?
>
> As LLVM's OpenMP uses Intel's runtime library now, it re-uses threads when
> possible.
>
> There could be introduced execution modes that require to destroy threads
> after each
> parallel region in future OpenMP standards, but currently OpenMP threads
> are created once for the lifetime of the application with no ability to
> destroy them.
>
> And I'd guess that any OpenMP implementation behaves same way.


Does the Intel's library work for also Windows?
 Thank you,


> Regards,
> Andrey
>
> > -----Original Message-----
> > From: Openmp-dev [mailto:openmp-dev-bounces at lists.llvm.org
> <javascript:;>] On Behalf
> > Of Hal Finkel via Openmp-dev
> > Sent: Wednesday, September 16, 2015 1:59 PM
> > To: J Z
> > Cc: openmp-dev
> > Subject: Re: [Openmp-dev] [llvm-dev] Does LLVM OpenMP reuse threads by
> > pooling?
> >
> > [moving to openmp-dev]
> >
> > ----- Original Message -----
> > > From: "J Z via llvm-dev" <llvm-dev at lists.llvm.org <javascript:;>>
> > > To: llvm-dev at lists.llvm.org <javascript:;>
> > > Sent: Tuesday, September 15, 2015 5:49:21 PM
> > > Subject: [llvm-dev] Does LLVM OpenMP reuse threads by pooling?
> > >
> > > Hi,
> > >
> > > I've read the link
> > > https://software.intel.com/en-us/articles/performance-obstacles-for-
> > threading-how-do-they-affect-openmp-code
> > >
> > > that says the thread pooling technique may be used by OpenMP
> > > implementation.
> > >
> > > Does LLVM's OpenMP implemented this?
> > >
> > > Thank you,
> > > J
> > > _______________________________________________
> > > LLVM Developers mailing list
> > > llvm-dev at lists.llvm.org <javascript:;>
> > > http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
> > >
> >
> > --
> > Hal Finkel
> > Assistant Computational Scientist
> > Leadership Computing Facility
> > Argonne National Laboratory
> > _______________________________________________
> > Openmp-dev mailing list
> > Openmp-dev at lists.llvm.org <javascript:;>
> > http://lists.llvm.org/cgi-bin/mailman/listinfo/openmp-dev
>
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