SF Compute says it can reconfigure customers' InfiniBand fabric on the fly.

“redraw the lines of that infinite band fabric. Uh y you need to contact them and they will then do something for you. Um we now can do that on the fly for customers, um which I think is really great, um because it interfaces with the market really well, um where you want to be able to redraw things in order to scale up and down your clusters um Would we are”