https://krebsonsecurity.com/2014/02/the-new-normal-200-400-gbps-ddos-attacks/
Here is a story, almost comical. The 200gbps handles high request volume. On October 22, 2018, at 1:10 AM, John Hearns via Beowulf <[email protected]> wrote: > > >I will slightly blow my own trumpet here. I think a design which has high >bandwidth uplinks and half speed links to the compute nodes is a good idea. > >I would love some pointers to studies on bandwith utilisation on large scale >codes. > >Are there really any codes which will use 200Gbps across many nodes >simultaneously? > >On Sun, 21 Oct 2018 at 18:57, John Hearns <[email protected]> wrote: > >A comment from Brock Palane please? > >https://www.nextplatform.com/2018/10/18/great-lakes-super-to-remove-islands-of-compute/ > >I did a bid for a new HPC cluster at UCL in the UK, using FDR adapters and >100Gbps switches, making the same arguments abotu cutting down on switch >counts but still having a non-blocking network (at the time Mellanox were >promoting FDR by selling it at 40Gbps prices). > >But in this article if you have 1x switch in a rack and use all 80 ports (with >splitters) - there are not many ports left for uplinks! > >I imagine this is 2x 200Gbps switches, with 20 ports of each switch equipped >with port splitters and the other 20 ports as uplinks. > _______________________________________________ Beowulf mailing list, [email protected] sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
