Energy per decision and Landauer Gap calculator
Two quick calculations from the Joule Ledger. Both run in your browser.
Energy per decision
Landauer Gap
Reading the results
- Energy per decision is only comparable at the same meter point, task and quality gate.
- See Decision Yield and the Landauer Gap for definitions.
- These are calculations, not measurements: their label is set by how the input figures were obtained.
Questions
Why does the meter point matter?
The same workload measured at the chip and at the facility can differ by the whole overhead of cooling and power conversion.
Keep reading
Decision YieldDecision Yield, the JL-26 ratio of quality-gated decisions per joule at a stated meter point: formula, task sets, quality gates and MLPerf.Landauer GapThe Landauer Gap compares the energy per irreversible bit operation with the physical minimum, k_B·T·ln 2: the derivation, units, assumptions and evidence.Ledger closure checkerFree closure checker: enter Intake, ΔReserve, Work, Overhead and Waste to see if your energy ledger closes, plus Overhead Ratio.How to measure AI inference energyHow to measure the energy of AI inference properly: task set, quality gate, meter point, analyzer, ranging, 60-second windows, closure check and reporting.
Take the next step.
Free calculator: turn measured energy and passing tasks into energy per decision and Decision Yield, and compare an operation with the Landauer limit.