Amdahl's Law Calculator
Estimate overall performance speedup using Amdahl's law.
Estimate overall performance speedup using Amdahl's law.
Move between processor performance, parallel speedup, data transfer, cache access, network delay, memory addressing and information entropy.
Calculate CPU execution time from instruction count, cycles per instruction and clock rate.
Open calculatorEstimate overall performance speedup using Amdahl's law.
Calculate data transfer time from data size and transfer rate.
Open calculatorCalculate average memory access time from cache hit time, miss rate and miss penalty.
Open calculatorCalculate the bandwidth-delay product from network bandwidth and round-trip time.
Open calculatorCalculate addressable memory capacity from address width and bytes per address.
Open calculatorCalculate binary information entropy from the probability of one outcome.
Open calculatorAmdahl's Law Calculator is an educational computer-science tool for exploring a standard computing relationship.
Enter the requested values using the stated units. The calculator validates the numerical domain and applies S = 1 / ((1 - p) + p / s).
Variables: p = Parallelizable portion (%); s = Speedup of improved portion.
Example: p = 80%, s = 4 → overall speedup = 2.5×.
It is intended for study, classroom exercises and quick exploration of the stated computing relationship.
No. Real systems can include hardware, software, protocol, workload, caching, scheduling and implementation effects beyond the simplified model.
These sources are used to verify terminology, formulas, and information related to this calculator.