Author's Blogs

How to Plot OpenMP* Scaling Results
By Cownie, James H (Intel) Posted on 12/02/16 0
Short Version When plotting scaling graphs for Intel processors which support multiple hardware threads/core, NEVER use an X-axis labelled “Threads”, but always use “Cores”, and plot separate data for 1thread/core, 2threads/core and, on Intel® Xeon Phi™ processors, 4threads/core. Long Version ...
Intel® Xeon Phi™ Product Family x200 (KNL) User mode (ring 3) MONITOR and MWAIT
By Cownie, James H (Intel) Posted on 10/06/16 1
The Intel® Xeon Phi™ Product Family x200 series processors (formerly known as “Knights Landing”) contain a model specific feature, which allows the MONITOR and MWAIT[1] instructions to be executed in rings other than ring 0, whereas architecturally these instructions are restricted to ring 0 (ker...