[Bancakes]

I doubt the RAM is added up. I think that’s only a feature reserved for their NVLinked HPC series cards. In fact, without nvlink, I don’t see how you’d connect them together to compute a single task in a performant and efficient way.

[minimaxir]

It depends on how the parallelism is implemented, e.g. distributed data parallel (DDP) to synchronize gradients: https://pytorch.org/tutorials/intermediate/ddp_tutorial.html

It's a rabbit hole I stay away from for pragmatic reasons.

[whimsicalism]

yeah essentially this