knl cache mode performance
port of https://www.nersc.gov/research-and-development/knl-cache-mode-performance-coe/
related issue #33 (closed) about where exactly to put this is unresolved
port of https://www.nersc.gov/research-and-development/knl-cache-mode-performance-coe/
related issue #33 (closed) about where exactly to put this is unresolved