Chiplet Latency Calculator
Estimate point-to-point chiplet latency as propagation delay times distance divided by 1000 plus fixed interface overhead, total latency in ns where propagation is ps/mm.
Description
Estimate one-way chiplet link latency from physical distance, propagation delay per millimeter, and fixed interface overhead.
Estimate point-to-point chiplet latency as propagation delay times distance divided by 1000 plus fixed interface overhead, total latency in ns where propagation is ps/mm.
When to use Chiplet Latency Calculator
- Estimate one-way chiplet link latency from physical distance, propagation delay per millimeter, and fixed interface overhead.
- Compare fabrication or device scenarios while holding coefficients and unit conventions constant.
- Check a hand calculation before moving to a higher-fidelity process, circuit, or TCAD model.
How the calculation works
The fixed overhead can dominate short links, while propagation grows linearly with routed distance rather than straight-line die separation.
latency[ns] = distance[mm]·delay[ps/mm]/1000 + overhead[ns] Interpreting the result
The fixed overhead can dominate short links, while propagation grows linearly with routed distance rather than straight-line die separation.
Assumptions and limitations
- Serialization, repeaters, clock crossings, switches, queuing, protocol retries, and round-trip timing are not included.
- Use parameters measured for the same material, geometry, temperature, and operating regime whenever the result informs engineering work.