GPU Resource Barrier Hardware for Low-Latency Pipeline Synchronization

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Solution Overview

Problem

Current graphics processing units (GPUs) face inefficiencies in processing graphics data due to resource barriers, which hinder optimal performance in parallel processing environments, particularly in SIMT architectures where thread synchronization is crucial.

Innovation Solution

Implementing hardware acceleration of resource barriers within the graphics pipeline using dedicated circuitry to manage and optimize thread synchronization, allowing for more efficient parallel processing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If resource barriers are processed using traditional software-based synchronization methods in GPUs, then thread synchronization can be achieved, but processing latency increases and throughput decreases

Engineering Contradiction:

Improvethread synchronizationVSAvoidprocessing latency

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent replaces software-based resource barrier processing with dedicated hardware circuitry within the graphics processor. Specifically, it introduces barrier execution units and synchronization hardware that directly handle resource barrier operations, substituting the traditional software-driven synchronization mechanism. This hardware substitution eliminates the performance overhead associated with software processing while maintaining reliable thread synchronization, thereby resolving the contradiction between synchronization reliability and processing latency.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces intermediate hardware components including barrier execution units and synchronization hardware that act as mediators between computing units and memory resources. These intermediary elements manage resource barrier operations independently, facilitating efficient coordination between parallel threads without requiring full software intervention. This intermediary hardware layer reduces synchronization latency while ensuring thread coordination reliability.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Productivity

If hardware acceleration of resource barriers is implemented, then processing throughput increases, but device complexity increases

Engineering Contradiction:

Improveprocessing throughputVSAvoidgraphics processor complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent segments the graphics processor into distinct functional units, including dedicated barrier execution units and synchronization hardware modules. Rather than implementing a monolithic complex system, the resource barrier functionality is divided into specialized sub-components that operate independently. This segmentation allows the system to achieve high processing throughput for barrier operations while managing overall device complexity through modular design, where each segment handles specific aspects of resource synchronization.

Inventive Principle:

Principle #1Segmentation

3Productivity

If more hardware circuitry is added for barrier processing, then thread execution efficiency improves, but manufacturing cost increases

Engineering Contradiction:

Improvethread execution efficiencyVSAvoidmanufacturing complexity

Core Design Contradiction:

ProductivityVSEase of manufacture

Solution Approach 1:

The patent designs the dedicated barrier execution units and synchronization hardware to serve multiple purposes within the graphics processor ecosystem. These hardware components not only handle resource barrier operations but also facilitate general thread coordination and synchronization tasks across different computing units. This multi-functionality allows the system to improve thread execution efficiency through specialized hardware while avoiding the need for separate dedicated circuits for each function, thereby controlling manufacturing complexity and cost.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20260004380A1Hardware acceleration of resource barriers in a graphics environment

Publication Date: 2026.01.01 INTEL CORP

AI summary

An apparatus to facilitate hardware acceleration of resource barriers in a graphics environment is disclosed. The apparatus includes resource barrier hardware circuitry for processing cores and a graphics pipeline to: receive a resource barrier instruction to transition a resource utilized by the graphics pipeline from a first usage to a second usage; responsive to the resource barrier instruction, cause a draw group marker having a current draw group count to be sent to an end of the graphics pipeline to track completion of each stage of the graphics pipeline; increment the current draw group count to a new draw group count for each new draw group of the graphics pipeline; and determine that a current signal stage of the graphics pipeline is complete for a current draw group responsive to a done count for the current signal stage being less than or equal to the current draw group count.