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Re:Compute Engine machine types with up to 96 vCPUs and 624G... by dx034 on Friday October 06, 2017 @08:18AM (#15416186)
But that one costs 6.4x the 16 core variant for 6x the cores. Are there any applications where you're heavily dependent on having all cores in one machine?
Re:Compute Engine machine types with up to 96 vCPUs and 624G... by dagw on Friday October 06, 2017 @09:25AM (#15416586)
Anything where the workers have to synchronize their work with each other often. Having everybody talking to each other over the network quickly kills performance.
Re:Compute Engine machine types with up to 96 vCPUs and 624G... by nl on Friday October 06, 2017 @09:17AM (#15416523)
Yes.

XGBoost will use all the cores you throw at it, and despite the recent work on GPU versions most of the time CPU cores are best.

I'll commonly run a model for 48 hours on an i7. I'd love to be able to try more models.