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 <rbwcn...@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 <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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