Quantum Backoff Service for Runtime Qubit Allocation
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Solution Overview
Problem
Quantum computing devices face challenges in efficiently managing the limited allocation of qubits among multiple executing quantum services, as qubits require specific environmental conditions and assigning properties to one service can disrupt others, leading to operational failures when insufficient qubits are available.
Innovation Solution
Implementing a quantum backoff service (QBS) that determines qubit availability and places executing quantum services into a sleep state when qubits are unavailable, ensuring safe execution by storing the current state and halting execution until qubits become available, thereby preventing corruption of qubit properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If qubits are allocated to multiple quantum services simultaneously, then service execution capability is improved, but qubit availability and system reliability deteriorate when qubits are insufficient
Solution Approach 1:
The quantum backoff service performs preliminary checks on qubit availability before allocating qubits to quantum services. When qubits are unavailable, the service proactively places requesting services into a sleep state before allocation failure occurs, preventing system errors and ensuring reliable qubit allocation.
2Reliability
If qubits are assigned to one quantum service, then execution safety is improved, but allocation flexibility and system productivity worsen
Solution Approach 1:
The system dynamically adjusts qubit allocation based on real-time availability. When qubits are available, services are allocated and executed; when unavailable, services are placed in sleep state. This dynamic approach maintains execution safety while maximizing allocation flexibility and system productivity.
Solution Approach 2:
The quantum backoff service implements a feedback mechanism that continuously monitors qubit availability and adjusts service allocation accordingly. When qubits become available, sleeping services are notified and can resume execution, ensuring both execution safety and allocation flexibility.
3Speed
If runtime qubit allocation is managed without backoff mechanism, then service request speed is improved, but system reliability and qubit property integrity worsen
Solution Approach 1:
The system performs preliminary qubit availability checks before allocation, and proactively places services in sleep state when qubits are unavailable. This prevents allocation failures and qubit property corruption while maintaining fast service request handling through efficient state management.
Data Source
AI summary
Managing runtime qubit allocation for executing quantum services is disclosed. In one example, a processor device of a quantum computing system implements a quantum backoff service (QBS) that enables safe runtime qubit allocation for executing quantum services. The QBS receives a request from a quantum service scheduler for allocation of one or more qubits for an executing quantum service. Upon receiving the request for allocation, the QBS determines whether the one or more qubits are unavailable for execution. If the QBS determines that the one or more qubits are unavailable for allocation, the QBS places the executing quantum service into a sleep state. The QBS in some examples may subsequently receive an indication that the one or more qubits have become available for allocation. The QBS then restores the executing quantum service into an executing state and allocates the one or more qubits for the executing quantum service.