`Local DRAM accesses` from pcm-numa does not match memory throughput from pcm-memory about pcm

[rdementi]

there are a few more things to consider: pcm-numa measures accesses. Each read access can trigger 64 byte transfer (cache line) or up to two 64 byte transfers (read-for-ownership + write-back) for a write access. This depends on the architecture. 0.527*64 = 33 Gbyte/sec which is close to your read bandwidth measured by pcm-memory. Some of these accesses are writes and generate the additional write bandwidth (14 Gbyte/sec in pcm-memory). Hardware prefetches can also generate additional traffic. pcm-numa is not intended to measure exact memory bandwidth. It is more to assess remote/local access distribution.