Massively parallel quantum computer simulator

K. De Raedt, K. Michielsen, H. De Raedt, B. Trieu, G. Arnold, M. Richter, Th Lippert, H. Watanabe, N. Ito

Research output: Contribution to journalArticlepeer-review

123 Citations (Scopus)


We describe portable software to simulate universal quantum computers on massive parallel computers. We illustrate the use of the simulation software by running various quantum algorithms on different computer architectures, such as a IBM BlueGene/L, a IBM Regatta p690+, a Hitachi SR11000/J1, a Cray X1E, a SGI Altix 3700 and clusters of PCs running Windows XP. We study the performance of the software by simulating quantum computers containing up to 36 qubits, using up to 4096 processors and up to 1 TB of memory. Our results demonstrate that the simulator exhibits nearly ideal scaling as a function of the number of processors and suggest that the simulation software described in this paper may also serve as benchmark for testing high-end parallel computers.

Original languageEnglish
Pages (from-to)121-136
Number of pages16
JournalComputer Physics Communications
Issue number2
Publication statusPublished - 2007 Jan 15
Externally publishedYes


  • Computer simulation
  • High performance computing
  • Parallelization
  • Quantum computation

ASJC Scopus subject areas

  • Hardware and Architecture
  • Physics and Astronomy(all)


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