Processor Core Component Configuration via OS Process Attributes
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Solution Overview
Problem
Current microarchitectures in central processing units (CPUs) do not optimally adapt to the varying characteristics and behaviors of operating system processes, leading to inefficient operation due to delayed adaptations based on usage patterns, which can result in suboptimal performance, power management, malware response, fault tolerance, and application security.
Innovation Solution
Implementing a system that identifies operating system processes by attributes such as address space identifiers and configures microarchitectural components like prefetchers, branch predictors, and dispatch units with dynamic parameters based on process-specific models, allowing for per-process tuning of performance, power management, malware response, and security settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If microarchitectures use fixed configuration for all processes, then device complexity is reduced, but adaptability to different process characteristics deteriorates
Solution Approach 1:
The microarchitecture configuration is made dynamic by allowing parameters to change based on the identified process characteristics. The system transitions from a static fixed configuration to a dynamic configuration that adapts to different processes, resolving the contradiction between adaptability and complexity by making the complexity conditional rather than permanent.
Solution Approach 2:
The invention changes physical or operational parameters of the microarchitecture (such as cache size, pipeline depth, execution units) based on process attributes. This allows the system to optimize performance for different process types by adjusting parameters, thereby improving adaptability without requiring a completely different architecture for each process.
2Productivity
If microarchitectures adapt based on usage patterns, then performance is improved, but response time to context switch increases
Solution Approach 1:
The system performs preliminary identification of process characteristics at context switch boundaries, allowing the microarchitecture to be pre-configured for the incoming process before execution begins. This eliminates adaptation delays during context switches by having the configuration ready in advance, thus improving response time while maintaining performance optimization.
Solution Approach 2:
The system uses feedback from process identification mechanisms (such as OS-provided process attributes or performance monitoring) to dynamically adjust microarchitecture configuration. This feedback loop enables the system to respond quickly to context switches by using readily available process information to determine optimal configuration, reducing adaptation time while maintaining performance benefits.
3Productivity
If microarchitectures are optimized for specific process types, then performance is improved, but versatility across different process types deteriorates
Solution Approach 1:
The invention creates a universal microarchitecture configuration system that can serve multiple process types. By using process identification and parameter-based configuration, a single microarchitecture can be optimized for different process types (scientific computing, graphics, general-purpose) through parameter adjustment rather than requiring separate hardware designs, thus maintaining versatility while achieving performance optimization for each process type.
Data Source
AI summary
A first operating system process may be identified. The first operating system process may have instructions configured to be executed by a processor core. A first set of parameters may be determined based on an attribute of the first operating system process. For example, the first set of parameters may be determined based on an address space identifier, an address space stored in a page table base register, a virtual machine identifier, or a combination thereof. A component of the processor core may be configured using the first set of parameters. For example, one or more components, such as a branch predictor, a prefetcher, a dispatch unit, a vector unit, a clock controller, and the like, may be configured using the first set of parameters.