0.5 Petabyte Simulation of a 45-Qubit Quantum Circuit
Authors
Event Type
Paper
Applications
Machine Learning
Quantum Computing
TimeWednesday, November 15th2:30pm -
3pm
Location301-302-303
DescriptionNear-term quantum computers will soon reach sizes that
are challenging to directly simulate, even when
employing the most powerful supercomputers. Yet, the
ability to simulate these early devices using classical
computers is crucial for calibration, validation, and
benchmarking. In order to make use of the full potential
of systems featuring multi- and many-core processors, we
use automatic code generation and optimization of
compute kernels, which also enables performance
portability. We apply a scheduling algorithm to quantum
supremacy circuits in order to reduce the required
communication and simulate a 45-qubit circuit on the
Cori II supercomputer using 8,192 nodes and 0.5
petabytes of memory. To our knowledge, this constitutes
the largest quantum circuit simulation to this date. Our
highly-tuned kernels in combination with the reduced
communication requirements allow an improvement in
time-to-solution over state-of-the-art simulations by
more than an order of magnitude at every scale.
Download PDF:
here
