3 ms·
Is that not solvable using an IOMMU (assuming hardware that has one)?
by foresto 2y ago
Is that not solvable using an IOMMU (assuming hardware that has one)?
- justinclift 2y agoNo idea personally. :)
- riehwvfbk 2y agoAn IOMMU does solve it, at the cost of some performance. The GPU can only access memory that the IOMMU allows, and the part that programs the IOMMU is open source. RDMA requires a special network card and is opt-in - an RDMA NIC cannot access any random memory, only specially registered regions. One could argue that a NIC FW bug could cause arbitrary memory accesses, but that's another place where an IOMMU would help.
- justinclift 2y agoAwesome, thanks. :)