QCGPU

An Open Source, High Performance & GPU Accelerated, Quantum Computer Simulator in Rust

• Uses the parallel programing library ArrayFire, which supports CUDA and OpenCL kernels.
• Runs Cross Platform (x86, ARM, CUDA, and OpenCL devices)

Prerequisites:

• ArrayFire 3.5.x or newer via. pre-built binaries
• Set the environment variable AF_PATH to point to the ArrayFire installation root folder
• Add the library files to your PATH
  • Windows: Add %AF_PATH%\lib to your PATH
  • MacOS / Linux: run export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$AF_PATH/lib
• Rust (install here). Please use a nightly build.

Building this project

1. Make sure you have all the requirements completed / installed

Initial Benchmarks

Run cargo bench

test tests::qubits_16_cpu                ... bench:     220,692 ns/iter (+/- 47,403)
test tests::qubits_16_from_string_cpu    ... bench:     224,432 ns/iter (+/- 25,096)
test tests::qubits_16_from_string_opencl ... bench:       5,079 ns/iter (+/- 633)
test tests::qubits_16_opencl             ... bench:       4,965 ns/iter (+/- 543)

Notes

Currently, the biggest bottleneck is the kron and gate generation functions

Can also max at 30 qubits, or the number storage will have to be changed (Will require using f64 complex numbers instead of f32, which not all GPUs support)

Could try and use sparse matrices for the gates

License

This software is licensed under the MIT licence (see LICENSE.md)

Copyright (c) 2018 Adam Kelly