Ccd control bios9/28/2023 There is an option to set a specific PCI slot as preferred (scheduling). Note: This configuration is important to achieve the max 200Gb/s performance. To enable NPS2 (allocate memory locally to NUMA node where NIC resides), set the following on the BIOS:Īdvanced → AMD CBS → DF Common Options → Memory Addressing → NUMA nodes per socket → NPS2 However, specific applications might need more testing to tune the specific performance.įor 100Gb/s any NPS configuration will work. We recommend checking with the OEM system vendor, for best NPS configuration on the specific system you own.įor maximum bandwidth of micro-benchmarks tests over InfiniBand HDR (or 200Gb/s) gen4 PCI with EPYC Series 7002 processors, using NPS=1 or NPS=2 is recommended due to the number of memory channels (more memory channels = more bandwidth).įor maximum bandwidth micro-benchmarks tests over InfiniBand HDR100 or EDR with 2 nd Gen EPYC, any configuration will work to reach line rate.įor HPC application testing, NPS=2 or NPS=4 recommendation may depend on the application's ability to reach better locality between the CPUs and the memory.
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