3 ms·
I did a lot of work with the 5600 Westmere. After working out the "easy" stuff related to NUMA and IOH, the (relatively new IIRC) uncore was a big remaining pa
by wyldfire 8y ago
I did a lot of work with the 5600 Westmere. After working out the "easy" stuff related to NUMA and IOH, the (relatively new IIRC) uncore was a big remaining part of the recipe for performance when trying to saturate the PCIe devices.
- dragontamer 8y agoInteresting story! Care to elaborate on what kind of PCIe devices you were using? Was it GPGPU compute? Or were you trying to saturate a router / network of some kind? And do you remember what kind of problems you faced? (Latency or bandwidth??)
- wyldfire 8y agoThey were Intel X520-SR2 Niantic 10GbE cards (later 82599ES). Bandwidth. It was challenging to find a stable recipe on linux to receive TCP streams at or near the media limit (x four ports, simultaneously).