[Openmp-dev] OpenMP 4 offloading status

[Carlo Bertolli via Openmp-dev]

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








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
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