ALUSaturation
Revision as of 17:50, 5 March 2019 by Thomas-gruber-5537@uni-erlangen.de (talk | contribs) (Created page with "== Description == The pattern "ALU saturation" describes the performance limitation caused by fully utilizing a functional unit inside a CPU core. == Symptoms == * Throughput...")
Description
The pattern "ALU saturation" describes the performance limitation caused by fully utilizing a functional unit inside a CPU core.
Symptoms
- Throughput at design limit(s)
- Good (low) CPI
- Integral ratio of cycles to specific instruction count(s).
Detection
Use a hardware-counter tool like:
- LIKWID with performance groups FLOPS_SP, FLOPS