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 <layto...@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 <rbwcn...@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 <layto...@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 <rbwcn...@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-w...@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/ >>>> > >>>> > _______________________________________________ >>>> > Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing >>>> > To change your subscription (digest mode or unsubscribe) visit >>>> > https://beowulf.org/cgi-bin/mailman/listinfo/beowulf >>>> _______________________________________________ >>>> Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing >>>> To change your subscription (digest mode or unsubscribe) visit >>>> https://beowulf.org/cgi-bin/mailman/listinfo/beowulf
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