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> Spoiler: Ousterhout is right, and the data shows he is right. Maybe not everyone knows it yet, or it's the kind of "right" that not everyone will ever get to
by KaiserPro 4y ago
> Spoiler: Ousterhout is right, and the data shows he is right. Maybe not everyone knows it yet, or it's the kind of "right" that not everyone will ever get to (and we'll settle for "good enough" for much longer), but he is almost certainly right.
No, Ousterhout is not "right", Ousterhout has put forward an hypothesis, backed up by _some_ data that's not really borne out from real world experiences in the datacentre.
Infiniband, despite his claims to the contrary solves a whole bunch of the problems he's describing. Moreover its a proven solution that deploys at scale. not only that, but you can run enthernet/IP over the top.
Having proper flow control inside your switching fabric is bloody amazing if you want real-time with QOS over the top. After all Fibre Channel was designed to be fast, guaranteed deliver and low latency. The problem is, ethernet was cheaper and good enough to cover 80% of usecases.
- hardwaresofton 4y agoA bit late but for the average (small, let’s say) data center that isn’t interested, then he’s offering a valid (if not unlikely) solution right?
- KaiserPro 4y agoI'm not sure. Having run a smaller datacenter (~2 megawatts) We got far more bang for our buck by upgrading the core switch fabric and moving to dual 40gig(from dual 10 gig) ethernet for the "heavy" nodes. Sure it cost more in terms of capex, but once it was installed we didn't need to change anything else. The cost of having an engineering team porting mission critical stuff to a new transport mechanism would have been astronomical, not only in opex, but in lost capacity to do other business critical tasks.