A Hybrid Classical-Quantum HPC Workload
- URL: http://arxiv.org/abs/2312.04933v1
- Date: Fri, 8 Dec 2023 09:54:51 GMT
- Title: A Hybrid Classical-Quantum HPC Workload
- Authors: Aniello Esposito, Sebastien Cabaniols, Jessica R. Jones, David
Brayford
- Abstract summary: A strategy for the orchestration of hybrid classical-quantum workloads on supercomputers featuring quantum devices is proposed.
An example application is investigated that offloads parts of computation to a quantum device.
The present test bed serves as a basis for more advanced hybrid workloads eventually involving a real quantum device.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: A strategy for the orchestration of hybrid classical-quantum workloads on
supercomputers featuring quantum devices is proposed. The method makes use of
heterogeneous job launches with Slurm to interleave classical and quantum
computation, thereby reducing idle time of the quantum components. To better
understand the possible shortcomings and bottlenecks of such a workload, an
example application is investigated that offloads parts of the computation to a
quantum device. It executes on a classical HPC system, with a server mimicking
the quantum device, within the MPMD paradigm in Slurm. Quantum circuits are
synthesized by means of the Classiq software suite according to the needs of
the scientific application, and the Qiskit Aer circuit simulator computes the
state vectors. The HHL quantum algorithm for linear systems of equations is
used to solve the algebraic problem from the discretization of a linear
differential equation. Communication takes place over the MPI, which is broadly
employed in the HPC community. Extraction of state vectors and circuit
synthesis are the most time consuming, while communication is negligible in
this setup. The present test bed serves as a basis for more advanced hybrid
workloads eventually involving a real quantum device.
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