[Openmp-dev] OpenMP 4 offloading status

Wed Jun 15 23:26:32 PDT 2016

> -----Original Message-----
> From: Openmp-dev [mailto:openmp-dev-bounces at lists.llvm.org] On Behalf
> Of Hal Finkel via Openmp-dev
> Sent: Wednesday, June 15, 2016 7:33 PM
> To: Hervé Yviquel
> Cc: Roel Jordans via Openmp-dev
> Subject: Re: [Openmp-dev] OpenMP 4 offloading status
> 
> ----- Original Message -----
> > From: "Hervé Yviquel via Openmp-dev" <openmp-dev at lists.llvm.org>
> > To: "Roel Jordans via Openmp-dev" <openmp-dev at lists.llvm.org>
> > Sent: Wednesday, June 15, 2016 11:34:27 AM
> > Subject: Re: [Openmp-dev] OpenMP 4 offloading status
> >
> > Hi all,
> >
> > I would like to know what is blocking libomptarget to be merge to the
> > trunk? From the discussion about a common offloading with Google
> > StreamExecutor, my understanding was that both should live separately
> > in a first time... Any news from this side ?
> 
> That's the plan. The news, as such, is that no one has okay'd those patches,
> and we need more eyes on the code. If you'd like to help this process, please
> help review the patches.
> 
> Thanks again,
> Hal

I've reviewed the patches back in February but there are still some of my comments outstanding.
I planned to give my ACK once they are discussed, I think they have been around for review long enough now so that everyone could have commented.

Thanks,
Jonas

> 
> > For now, I'm still developing offloading to my own target in the
> > github version of libomptarget on but I would like to update it to a
> > more recent version of clang/llvm.
> >
> > Thanks,
> > Hervé
> >
> > > Le 6 avr. 2016 à 16:20, Roel Jordans via Openmp-dev
> > > <openmp-dev at lists.llvm.org> a écrit :
> > >
> > > Hi Carlo,
> > >
> > > Thanks for your response!  Good to see that things are under review.
> > >
> > > Cheers,
> > > Roel
> > >
> > > On 04/04/16 22:36, Carlo Bertolli wrote:
> > >> Hi Roel
> > >>
> > >> I am not sure if someone already answered your question, but here
> > >> is a description of the status to the best of my knowledge:
> > >> offloading support for OpenMP includes implementation of
> > >> target-related pragmas plus an offloading library, currently called
> > >> libomptarget.
> > >>
> > >> The implementation of the pragmas happens in Clang and most of the
> > >> constructs are implemented in trunk, notably except map clause,
> > >> declare target, target update, and some clauses of teams. These
> > >> remaining things are being worked on at this time, i.e. the patches
> > >> are being discussed on phabricator.
> > >>
> > >> libomptarget is present as patches to the openmp library. You can
> > >> find them here:
> > >>
> > >> http://reviews.llvm.org/D14031
> > >> http://reviews.llvm.org/D14253
> > >> http://reviews.llvm.org/D14254
> > >>
> > >> Finally, there are additional patches to the driver being discussed
> > >> by the llvm community. These would enable compilation for different
> > >> kinds of targets (same target region compiled for host and device
> > >> selected by command line args), bundling of intermediate files,
> > >> etc..
> > >>
> > >> Unfortunately, at this point in time putting all of these separate
> > >> things together may not be easy.
> > >>
> > >>
> > >> Cheers
> > >>
> > >> -- Carlo
> > >>
> > >>
> > >>
> > >>
> > >>
> > >>
> > >> Inactive hide details for Roel Jordans via Openmp-dev
> > >> ---04/02/2016
> > >> 04:23:25 PM---Hi all, I've been looking into getting starteRoel
> > >> Jordans via Openmp-dev ---04/02/2016 04:23:25 PM---Hi all, I've
> > >> been looking into getting started with using OpenMP 4 to try out
> > >>
> > >> From: Roel Jordans via Openmp-dev <openmp-dev at lists.llvm.org>
> > >> To: <openmp-dev at lists.llvm.org>
> > >> Date: 04/02/2016 04:23 PM
> > >> Subject: [Openmp-dev] OpenMP 4 offloading status Sent by:
> > >> "Openmp-dev" <openmp-dev-bounces at lists.llvm.org>
> > >>
> > >> -------------------------------------------------------------------
> > >> -----
> > >>
> > >>
> > >>
> > >> Hi all,
> > >>
> > >> I've been looking into getting started with using OpenMP 4 to try
> > >> out the offloading.  I've seen some nice presentations explaining
> > >> the concepts and it sounds usable.  However, if I look at the
> > >> openmp.llvm.org website, I see that this part is still "under
> > >> development".
> > >>
> > >> Is there some list that I can look at that tells me the currently
> > >> supported features or is this something I will just need to find
> > >> out through trial and error?
> > >>
> > >> Cheers,
> > >>  Roel
> > >> _______________________________________________
> > >> Openmp-dev mailing list
> > >> Openmp-dev at lists.llvm.org
> > >> http://lists.llvm.org/cgi-bin/mailman/listinfo/openmp-dev
> > >>
> > >>
> > >>
> > > _______________________________________________
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> > > Openmp-dev at lists.llvm.org
> > > http://lists.llvm.org/cgi-bin/mailman/listinfo/openmp-dev
> >
> > _______________________________________________
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> >
> 
> --
> Hal Finkel
> Assistant Computational Scientist
> Leadership Computing Facility
> Argonne National Laboratory
> _______________________________________________
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> Openmp-dev at lists.llvm.org
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