Simplified Task Runtime for Lightweight Kernel Execution
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional task-based runtime systems incur significant overhead in managing lightweight kernels, impairing performance and energy efficiency due to complex task management processes, making them unsuitable for parallelizing lightweight computational procedures with simple dependencies.
Innovation Solution
Implementing a simplified task management system that bypasses normal task management stages by using a runtime-managed simple task table, allowing direct execution of lightweight kernels without instantiating task structures, and scheduling them using a scheduler that identifies and executes simple tasks as normal tasks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional task-based runtime system is used to manage lightweight kernels, then task management functionality is provided, but significant overhead is incurred in task creation, dispatching and management
Solution Approach 1:
The patent segments task management into two paths: a simplified path for lightweight kernels that bypasses normal task management stages, and a traditional path for heavyweight kernels. This segmentation allows lightweight kernels to avoid the overhead of task structure instantiation while maintaining necessary management functionality through a runtime-managed simple task table.
Solution Approach 2:
The patent extracts the essential task management functionality from the traditional task-based runtime system and implements it directly through a simple task table. By taking out only the necessary elements (task pointer, kernel pointer, iteration counter) and removing unnecessary overhead components, the system achieves efficient management of lightweight kernels without full task management infrastructure.
2Reliability
If a full-fledged task-based runtime system is used, then complex dependencies and synchronization requirements are handled, but parallelization occurs at lower frequencies
Solution Approach 1:
The patent divides kernel execution into two categories: lightweight kernels that can be executed in parallel at high frequency with simplified management, and heavyweight kernels that require full task management for complex dependencies. This segmentation enables high-frequency parallelization for simple kernels while preserving the capability to handle complex scenarios when needed.
Solution Approach 2:
The patent applies partial action by implementing only the necessary task management steps for lightweight kernels (simple task table lookup and direct execution) rather than the full task management sequence. This partial implementation achieves sufficient functionality for simple kernels while avoiding the overhead that would limit parallelization frequency.
3Reliability
If normal task management stages are used for lightweight kernels, then complete task management is provided, but overhead is comparable to the actual computation
Solution Approach 1:
The patent extracts only the essential task management elements needed for lightweight kernels (simple task table with minimal metadata) and removes the overhead of full task structures, scheduling infrastructure, and management stages. This extraction provides sufficient task management functionality while dramatically reducing the computational overhead to levels below the actual kernel execution time.
Solution Approach 2:
The patent uses lightweight, disposable task representations in the simple task table that require minimal memory and processing resources. These simple task entries are created and destroyed efficiently without the overhead of persistent task structures, enabling energy-efficient management of short-lived lightweight kernel executions.
Data Source
AI summary
Aspects include computing devices, systems, and methods for implementing scheduling and execution of lightweight kernels as simple tasks directly by a thread without setting up a task structure. A computing device may determine whether a task pointer in a task queue is a simple task pointer for the lightweight kernel. The computing device may schedule a first simple task for the lightweight kernel for execution by the thread. The computing device may retrieve, from an entry of a simple task table, a kernel pointer for the lightweight kernel. The entry in the simple task table may be associated with the simple task pointer. The computing device may directly execute the lightweight kernel as the simple task.