Need muti GPU work for same work unit together

[tjchkj]

When V8 can made all GPUs work for same work unit at same time ?

[PaulTV]

That's very unlikely to happen. It'd require a *lot* of data transfer back and forth between the GPUs (threads need each other's data), which would slow everything down horribly.

[Joe_H]

They looked into it a number of years ago, testing showed too much PCI overhead transferring data between GPUs. It was determined that running one WU on one GPU was a better use of resources.

[toTOW]

It's already hard to get WU that have enough atoms to fully use the biggest GPUs ... image the pain it would be with more than one at once ...