[llvm-dev] Adapting and open-sourcing PGI's Fortran frontend for LLVM

Thu May 26 14:32:29 PDT 2016

No closed doors intended here. Just a recognition that for something like
an initial review to be useful, we probably have to be a bit careful in
how many people we can reasonably involve before it could get unwieldy,
and trying to be respectful of people’s time if we can nail down 90% of
issues with a smaller group before going broader. I think we’d be fine
with opening up the WebEx presentations to whoever wanted to observe and
possibly chime in if it could be a managed process.

—Rob

On 5/26/16, 2:06 PM, "mehdi.amini at apple.com on behalf of Mehdi Amini"
<mehdi.amini at apple.com> wrote:

>
>> On May 26, 2016, at 1:57 PM, Neely, Rob via llvm-dev
>><llvm-dev at lists.llvm.org> wrote:
>> 
>> Chad, et al,
>> 
>> In addition to Doug’s excellent technical update, I’ll note that we are
>> starting to have some discussions on the DOE side with PGI about
>> establishing a more formal review team made up of some key LLVM
>> stakeholders to help smooth the way for a broader public rollout of the
>> Flang code base and eventual integration. We’ll probably rely on Hal and
>> others here to help us figure out who that group might be. My
>>expectation
>> is that it would involve a few WebEx/telecons on an as-needed basis
>> (perhaps quarterly?) starting later this summer when code starts to move
>> out of PGI’s internal systems and into a private github space. Stay
>>tuned
>> - we (both DOE and PGI) are keenly interested in doing what we can to
>>make
>> this successful.
>
>It seems to me that this "let's do it with selected people behind close
>doors" does not play well with "we are seeking to have some integration
>in the open-source projects and its broaden community".
>My own personal impression is that not conducting it in the open blurs
>the "message" around Flang direction and goals.
>
>-- 
>Mehdi
>
>
>> 
>> —Rob Neely, LLNL
>> 
>> 
>> On 5/26/16, 11:57 AM, "douglas miles (PGI)" <douglas.miles at pgroup.com>
>> wrote:
>> 
>> 
>>> Hi Chad - We have a functional Fortran compiler, with the PGI front-end
>>> bridged directly to LLVM, all of our Fortran runtime libraries
>>> integrated, and the Clang driver adapted for use with the Fortran
>>> compiler.  We're working with a few users at DOE who are trying to
>>> compile big applications with a binary version of the compiler.  Work
>>>is
>>> ongoing to migrate the source code into an LLVM-style repository, build
>>> infrastructure, documentation and web pages.  All of the compiler and
>>> runtime source is now built with Clang or the Fortran front-end with
>>> LLVM.  Much work remains on source code refactoring and documentation;
>>> we expect that work to accelerate once all the infrastructure work is
>>> done.
>>> 
>>> Doug
>>> 
>>> -----Original Message-----
>>> From: Hal Finkel [mailto:hfinkel at anl.gov]
>>> Sent: Thursday, May 26, 2016 9:17 AM
>>> To: mcrosier at codeaurora.org
>>> Cc: flang-dev; douglas miles (PGI); Rob Neely; Chris Lattner;
>>> llvm-dev at lists.llvm.org
>>> Subject: Re: [llvm-dev] Adapting and open-sourcing PGI's Fortran
>>>frontend
>>> for LLVM
>>> 
>>> Hi Chad,
>>> 
>>> I can tell you that progress is being made on PGI's side; I'll let
>>> Doug/Rob provide more detailed updates.
>>> 
>>> -Hal
>>> 
>>> ----- Original Message -----
>>>> From: "Chad Rosier" <mcrosier at codeaurora.org>
>>>> To: "Hal Finkel" <hfinkel at anl.gov>
>>>> Cc: "flang-dev" <flang-dev at googlegroups.com>, "douglas miles (PGI)"
>>>> <douglas.miles at pgroup.com>, "Rob Neely"
>>>> <neely4 at llnl.gov>, "Chris Lattner" <clattner at apple.com>,
>>>> llvm-dev at lists.llvm.org
>>>> Sent: Thursday, May 26, 2016 10:47:19 AM
>>>> Subject: RE: [llvm-dev] Adapting and open-sourcing PGI's Fortran
>>>> frontend	for	LLVM
>>>> 
>>>> Hi Hal,
>>>> I haven't been following this closely, but has there been any updates
>>>> recently.
>>>> 
>>>> Regards,
>>>>  Chad
>>>> 
>>>> -----Original Message-----
>>>> From: llvm-dev [mailto:llvm-dev-bounces at lists.llvm.org] On Behalf Of
>>>> Chris Lattner via llvm-dev
>>>> Sent: Sunday, November 15, 2015 12:46 AM
>>>> To: Hal Finkel <hfinkel at anl.gov>
>>>> Cc: LLVM Dev <llvm-dev at lists.llvm.org>; flang-dev
>>>> <flang-dev at googlegroups.com>; douglas miles (PGI)
>>>> <douglas.miles at pgroup.com>; Rob Neely <neely4 at llnl.gov>
>>>> Subject: Re: [llvm-dev] Adapting and open-sourcing PGI's Fortran
>>>> frontend for LLVM
>>>> 
>>>> 
>>>>> On Nov 13, 2015, at 2:22 PM, Hal Finkel via llvm-dev
>>>>> <llvm-dev at lists.llvm.org> wrote:
>>>>> 
>>>>> Hi everyone,
>>>>> 
>>>>> I have some very good news for everyone interested a
>>>>> production-quality Fortran frontend for LLVM:
>>>>> 
>>>>> The U.S. Department of Energy’s National Nuclear Security
>>>>> Administration and its three national labs have reached an agreement
>>>>> with NVIDIA's PGI division to adapt and open-source PGI's Fortran
>>>>> frontend, and associated Fortran runtime library, for contribution
>>>>> to the LLVM project. PGI is now working on isolating the necessary
>>>>> frontend components from their existing compiler code base and
>>>>> adapting those components to produce LLVM IR for consumption by our
>>>>> existing infrastructure.
>>>> 
>>>> This sounds very interesting Hal (and Doug), and I’m glad to hear
>>>> about it.  I look forward to when more details and code is available,
>>>> 
>>>> -Chris
>>>> _______________________________________________
>>>> LLVM Developers mailing list
>>>> llvm-dev at lists.llvm.org
>>>> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>>>> 
>>>> 
>>> 
>>> --
>>> Hal Finkel
>>> Assistant Computational Scientist
>>> Leadership Computing Facility
>>> Argonne National Laboratory
>>> 
>>> 
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