On Tue, Jul 06, 2021 at 02:28:28PM -0300, Jason Gunthorpe wrote:
Also on your claim that drivers/gpu is a non-upstream disaster: I've also learned that that for drivers/rdma there's the upstream driver, and then there's the out-of-tree hackjob the vendor actually supports.
In the enterprise world everyone has their out of tree backport drivers. It varies on the vendor how much deviation there is from the upstream driver and what commercial support relationship the vendor has with the enterprise distros.
I think he means the Mellanox OFED stack, which is a complete and utter mess and which gets force fed by Mellanox/Nvidia on unsuspecting customers. I know many big HPC sites that ignore it, but a lot of enterprise customers are dumb enought to deploy it.