3 ms·
Isn't that what CXL is?
by O5vYtytb 3y ago
Isn't that what CXL is?
- crest 3y agoCXL supports cache-coherent memories and even the numbers claimed in marketing materials are ~5x when it comes than DDR5 access times measured on desktop CPUs in microbenchmarks. It's still a lot better than having software handle the coherency protocol and could be really useful to allow either very large ccNUMA systems or memory capacity and bandwidth hungry accelerators to access the host DRAM as long they can tolerate the latency e.g. something along the lines of a several SX-Aurora cards hooked into a big host with a few TiB of DRAM spread over ≥16 DDR5 or later channels.