"A matrix-free sequential quantum computer simulator vastly improves…" — James E. Fischer (#c552)

Card #c552IR // #c552SynthesisMilitary report

A matrix-free sequential quantum computer simulator vastly improves time and memory performance on a single processor; distributing the algorithm with MPI across parallel processors lets it simulate quantum systems too large to fit in any single machine's memory.

— In our words · Source: A parallel quantum computer simulator (James E. Fischer)

[Use when]

When the problem won't fit in memory, change the math before buying a bigger machine.

[Why it matters]

Before large-scale quantum hardware exists, simulation is how quantum algorithms get developed — and the binding constraint is memory, not just speed.