Main Memory Bus Interface for High-Bandwidth Co-Processor I/O
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current computer systems face communication bottlenecks due to the lower bandwidths supported by I/O buses, which restrict the performance of co-processors and I/O devices that operate at faster speeds, necessitating a method to interface these devices through the main memory system for enhanced I/O capabilities.
Innovation Solution
The system connects co-processors or I/O devices directly to the main memory bus, allowing them to communicate at higher bandwidths, eliminating bottlenecks by using a TeraDIMM architecture that integrates non-volatile memory into the memory channel, similar to SSDs, and employs a discovery boot loader and BIOS changes to initialize and configure these devices for optimal operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If co-processors and I/O devices interface via the I/O bus, then device compatibility and ease of connection are maintained, but communication bandwidth is limited causing performance bottlenecks
Solution Approach 1:
The patent makes the main memory bus serve dual functions: its traditional role in connecting the CPU to system memory, and a new role as an I/O interface bus for co-processors and peripheral devices. This multi-functionality allows high-speed I/O operations without requiring separate dedicated I/O buses, thereby improving I/O performance while maintaining system simplicity.
Solution Approach 2:
The patent merges the I/O interface function with the main memory system by integrating I/O controllers and co-processor interfaces directly onto the memory bus. This consolidation eliminates the need for separate I/O bus infrastructure, allowing devices to operate at memory bus speeds and resolving the bandwidth limitation problem.
2Speed
If co-processors operate at faster speeds, then processing capability is improved, but communication bottlenecks occur due to lower bandwidth I/O buses
Solution Approach 1:
The patent introduces the main memory bus as an intermediary communication channel between co-processors and the system. By routing co-processor communications through this high-bandwidth bus rather than traditional I/O buses, the system enables fast co-processor operations to maintain their speed advantage without encountering communication bottlenecks.
3Productivity
If the main memory bus is used for I/O interfacing, then bandwidth is increased eliminating bottlenecks, but bus contention and configuration complexity may increase
Solution Approach 1:
The patent segments the main memory bus into multiple transaction types or channels, allowing simultaneous CPU-memory operations and I/O operations to proceed without excessive contention. This segmentation strategy enables the bus to handle diverse traffic patterns efficiently, maintaining high bandwidth while managing complexity through structured organization.
Data Source
AI summary
A system for interfacing with a co-processor or input/output device is disclosed. According to one embodiment, the system includes a computer processing unit, a memory module, a memory bus that connects the computer processing unit and the memory module and a co-processing unit or input/output device, wherein the memory bus also connects the co-processing unit or input/output device to the computer processing unit.