Hi Chris, They say that no announced silicon is vulnerable. Your link makes it clear that no ISA is immune if the implementation performs speculative execution. I think your point about two lines of production may make sense. Vendors will have to assess vulnerabilities and the performance trade-off.
Personally, I do not see a large HPC system being built out of non-speculative hardware. You would need much more hardware to reach a level of performance and the additional power could lead to a lower performance per Watt (i.e., exceed the facility's power budget). Scott On Tue, Jul 17, 2018 at 2:33 AM, Chris Samuel <ch...@csamuel.org> wrote: > On Tuesday, 17 July 2018 11:08:42 AM AEST Chris Samuel wrote: > > > Currently these new vulnerabilities are demonstrated on Intel & ARM, it > will > > be interesting to see if AMD is also vulnerable (I would guess so). > > Interestingly RISC-V claims immunity, and that looks like it'll be one of > the > two CPU architectures blessed by the Europeans in their Exascale project > (along with ARM). > > https://riscv.org/2018/01/more-secure-world-risc-v-isa/ > > All the best, > Chris > -- > Chris Samuel : http://www.csamuel.org/ : Melbourne, VIC > > _______________________________________________ > Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing > To change your subscription (digest mode or unsubscribe) visit > http://www.beowulf.org/mailman/listinfo/beowulf >
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