[petsc-users] MatSetValues error with ViennaCL types

[Jed Brown]

Manuel Valera <mvalera-w at sdsu.edu> writes:

> I thought newer NVIDIA cards had integrated circuits, not using PCI
> anymore, still the same case?

NVLink is much faster than PCI, but it's still a bus that is slower (and
higher latency) than aggregate DDR, though there are open questions
about how much message packing (for example) should take place on GPU
versus CPU.