[Beowulf] Frontier Announcement

Wed May 8 23:15:55 PDT 2019

Seriously? Wha.. what? Someone needs to get help.
And it wasn't me. I am a member of the People's Front of Julia.

(contrived Python reference intentional)

On Wed, 8 May 2019 at 22:57, Jeffrey Layton <laytonjb at gmail.com> wrote:

> I wrote some OpenACC articles for HPC Admin Magazine. A number of
> pro-OpenMP people attacked me on twitter (you know, OpenACC sucks, OpenMP
> is great). I received a private email threatening to kill me and my family
> if I didn't stop writing about OpenACC. Given your pro-OpenMP, anti-OpenACC
> stance, using the same tone as the threatening email, I wondered if that
> email came from you.
>
>
>
> On Wed, May 8, 2019, 17:48 Richard Walsh <rbwcnslt at gmail.com> wrote:
>
>>
>> Huh ... ??  Weird, scary ...
>>
>> Just MHO. Dropping off this thread now ...
>>
>> rbw
>>
>> Sent from my iPhone
>>
>> On May 8, 2019, at 4:29 PM, Jeffrey Layton <laytonjb at gmail.com> wrote:
>>
>> I was just pointing out that gcc has Open ACC capability on AMD GPUs.
>>
>> I didn't realize you part of the OpenMP Nazis. Were you the one that
>> threatened me and my family because I wrote about OpenACC?
>>
>>
>>
>> On Wed, May 8, 2019, 15:48 Richard Walsh <rbwcnslt at gmail.com> wrote:
>>
>>>
>>> Jeffry/All,
>>>
>>> Yes ... but given the choice of using OpenACC or OpenMP (if you are not
>>> going to write CUDA-HIP code for that extra 10% of performance) which
>>> captures most (all?) of the features of OpenACC, is a standard likely to
>>> outlive OpenACC, and should run on any vendor’s  accelerators, including
>>> whatever Intel comes up with ... why would you write in OpenACC ... ??
>>>
>>> GNU supports OpenMP too ... in my view, PVM is to MPI as OpenACC is to
>>> OpenMP 4.5-5.0 ...
>>>
>>> Cheers!
>>>
>>> rbw
>>>
>>> Sent from my iPhone
>>>
>>> On May 8, 2019, at 2:36 PM, Jeffrey Layton <laytonjb at gmail.com> wrote:
>>>
>>> Don't forget that gcc supports both NV and AMD GPUs with OpenACC. That's
>>> one of the lead compilers listed on the Frontier specs.
>>>
>>> Jeff
>>>
>>>
>>> On Wed, May 8, 2019 at 3:29 PM Richard Walsh <rbwcnslt at gmail.com> wrote:
>>>
>>>>
>>>> All,
>>>>
>>>> Cray has deprecated support for in OpenACC in light of the OpenMP 4.5
>>>> and 5.0 standards, and their target and data directives. NVIDIA’s PGI
>>>> Compiler group will keep OpenACC going for a while, but on AMD devices ...
>>>> maybe not.  That Cray will support only OpenMP on Frontier seems to be a
>>>> logical certainty.
>>>>
>>>> So if you or yours want to run at speed on Frontier you should bone up
>>>> on ROCm, HIP and OpenMP 4.5-5.0 ...
>>>>
>>>> :-)
>>>>
>>>> Cheers!
>>>>
>>>> rbw
>>>>
>>>> Sent from my iPhone
>>>>
>>>> > On May 8, 2019, at 12:47 PM, Jörg Saßmannshausen <
>>>> sassy-work at sassy.formativ.net> wrote:
>>>> >
>>>> > Dear all,
>>>> >
>>>> > I think the answer to the question lies here:
>>>> >
>>>> > https://en.wikipedia.org/wiki/OpenACC
>>>> >
>>>> > As I follow these things rather loosely, my understanding was that
>>>> OpenACC
>>>> > should run on both nVidia and other GPUs. So maybe that is the reason
>>>> why it
>>>> > is a 'pure' AMD cluster where both GPUs and CPUs are from the same
>>>> supplier?
>>>> > IF all of that is working out and if it is really true that you can
>>>> compile
>>>> > and run OpenACC code on both types of GPUs, it would a be big win for
>>>> AMD.
>>>> >
>>>> > Time will tell!
>>>> >
>>>> > All the best from my TARDIS!
>>>> >
>>>> > Jörg
>>>> >
>>>> > Am Dienstag, 7. Mai 2019, 16:59:48 BST schrieben Sie:
>>>> >>>  I think it is interesting that they are using AMD for
>>>> >>>
>>>> >>> both the CPUs and GPUs
>>>> >>
>>>> >> I agree. That means a LOT of codes will have to be ported from CUDA
>>>> to
>>>> >> whatever AMD uses. I know AMD announced their HIP interface to
>>>> convert
>>>> >> CUDA code into something that will run on AMD processors, but I don't
>>>> >> know how well that works in theory. Frankly, I haven't heard anything
>>>> >> about it since it was announced at SC a few years ago.
>>>> >>
>>>> >> I would not be surprised if AMD pursued this bid quite agressively,
>>>> >> possibly at a significant loss, for the opportunity to prove their
>>>> GPUs
>>>> >> can compete with NVIDIA and demonstrate that codes can be
>>>> successfully
>>>> >> converted from CUDA to something AMD GPUs can use to demonstrate GPU
>>>> >> users don't need to be locked in to a single vendor. If so, this
>>>> could
>>>> >> be a costly gamble for the DOE and AMD, but if it pays off, I
>>>> imagine it
>>>> >> could change AMD's fortunes in HPC.
>>>> >>
>>>> >>  "Win on Sunday, sell on Monday" doesn't apply just to cars.
>>>> >>
>>>> >> Prentice
>>>> >>
>>>> >>> On 5/7/19 4:43 PM, Jörg Saßmannshausen wrote:
>>>> >>> Hi Prentice,
>>>> >>>
>>>> >>> that looks interesting and I hope it means I will finally get the
>>>> neutron
>>>> >>> structure which was measured last year there! :-)
>>>> >>>
>>>> >>> On a more serious note: I think it is interesting that they are
>>>> using AMD
>>>> >>> for both the CPUs and GPUs. It sounds at least very fast of what
>>>> they
>>>> >>> want to build, lets hope their design will work as planned as well.
>>>> >>>
>>>> >>> All the best from London
>>>> >>>
>>>> >>> Jörg
>>>> >>>
>>>> >>> Am Dienstag, 7. Mai 2019, 10:32:42 BST schrieb Prentice Bisbal via
>>>> > Beowulf:
>>>> >>>> ORNL's Frontier System has been announced:
>>>> >>>>
>>>> >>>>
>>>> https://www.hpcwire.com/2019/05/07/cray-amd-exascale-frontier-at-oak-ridg
>>>> >>>> e/
>>>> >
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