I am often asked what “Large Pages” in computer systems are good for. For commodity (x86_64) processors, “small pages” are 4KiB, while “large pages” are (typically) 2MiB. The size of the page controls how many bits are translated between virtual and physical addresses, and so represent a trade-off between what… read more
Reference
AMD Opteron Processor models, families, and revisions
Opteron/PhenomII STREAM Bandwidth vs CPU and DRAM Frequency
In a recent post (link) I showed that local memory latency is weakly dependent on processor and DRAM frequency in a single-socket Phenom II system. Here are some preliminary results on memory bandwidth as a function of CPU frequency and DRAM frequency in the same system. This table does not… read more