Processor Task Distribution via Ready Signals
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Solution Overview
Problem
Existing processor architectures face inefficiencies in distributing processing tasks among multiple cores, leading to suboptimal resource utilization and potential task delays due to duplication of resource tracking hardware.
Innovation Solution
Implementing a system where processing clusters assert ready signals to a dispatch unit indicating available resources, allowing the dispatch unit to direct tasks to clusters with sufficient resources, and enabling tasks to be passed around a ring of clusters until one accepts the task.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a dispatch unit tracks resource availability in each core, then task distribution efficiency is improved, but device complexity increases due to duplication of resource tracking hardware
Solution Approach 1:
The patent merges the resource tracking function into the processing clusters themselves rather than having a separate dispatch unit track resources. Each processing cluster independently monitors its own resource availability and asserts ready signals when resources are available, eliminating the need for duplicate resource tracking hardware in the dispatch unit.
Solution Approach 2:
Processing clusters perform self-service by autonomously tracking their own resource availability and generating ready signals without external assistance. This self-monitoring capability allows clusters to independently indicate when they are ready to accept tasks, reducing the complexity of centralized resource tracking.
2Productivity
If tasks are directed to cores to maximize occupancy, then productivity is improved, but loss of time increases due to task wait times when resources are unavailable
Solution Approach 1:
The patent implements feedback through ready signals that continuously inform the dispatch unit about resource availability in processing clusters. This real-time feedback mechanism allows the dispatch unit to make informed decisions about task allocation, directing tasks only to clusters that are currently ready to execute them, thereby minimizing task wait times while maintaining high core occupancy.
3Productivity
If multiple processing clusters are used, then productivity is improved through parallel processing, but device complexity increases due to task distribution management
Solution Approach 1:
The patent segments the task distribution management function by giving each processing cluster independent readiness indication capability through ready signals. This segmentation allows the dispatch unit to simply respond to ready signals without implementing complex centralized resource management logic, reducing overall system complexity while maintaining parallel processing throughput.
Data Source
AI summary
Embodiments of the present invention facilitate distributing processing tasks within a processor. In one embodiment, processing clusters keep track of resource requirements. If sufficient resources are available within a particular processing cluster, the available processing cluster asserts a ready signal to a dispatch unit. The dispatch unit is configured to pass a processing task (such as a cooperative thread array or CTA) to an available processing cluster that asserted a ready signal. In another embodiment, a processing task is passed around a ring of processing clusters until a processing cluster with sufficient resources available accepts the processing task.