https://community.intel.com/t5/Software-Tuning-Performance/pcm-memory-utility-measures-cache-access-or-DRAM-access/m-p/1157191#M6958 <P>It may depend on the version of PCM that you are using, but the source code to the versions I have looked at use the memory controller DRAM read and write counters for memory bandwidth reports.</P> Wed, 21 Mar 2018 14:57:20 GMT McCalpinJohn 2018-03-21T14:57:20Z https://community.intel.com/t5/Software-Tuning-Performance/pcm-memory-utility-measures-cache-access-or-DRAM-access/m-p/1157190#M6957 <P>Hi,</P> <P>I am new to pcm-memory utility and I am using it for sandybridge E5-2670 processor in linux.</P> <P>The measured bandwidth in MB/s is the bandwidth for cache access or DRAM access?? I can see that the value shoots up for memory intensive benchmarks but I am confused between cache and DRAM.</P> <P>Thanks in advance.</P> Wed, 21 Mar 2018 11:44:45 GMT https://community.intel.com/t5/Software-Tuning-Performance/pcm-memory-utility-measures-cache-access-or-DRAM-access/m-p/1157190#M6957 SamG 2018-03-21T11:44:45Z https://community.intel.com/t5/Software-Tuning-Performance/pcm-memory-utility-measures-cache-access-or-DRAM-access/m-p/1157191#M6958 <P>It may depend on the version of PCM that you are using, but the source code to the versions I have looked at use the memory controller DRAM read and write counters for memory bandwidth reports.</P> Wed, 21 Mar 2018 14:57:20 GMT https://community.intel.com/t5/Software-Tuning-Performance/pcm-memory-utility-measures-cache-access-or-DRAM-access/m-p/1157191#M6958 McCalpinJohn 2018-03-21T14:57:20Z