Difference between revisions of "ALUSaturation"
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(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...") |
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Revision as of 17:50, 5 March 2019
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