CXL Interconnect Congestion Monitoring for Dynamic Memory Allocation
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Solution Overview
Problem
Existing computing systems experience increased latency and decreased interface bandwidth efficiency during data transfer due to memory congestion and inefficient signal transfer paths.
Innovation Solution
Implementing a computing system with a CXL interconnect device and congestion monitors that monitor signal transfers in real time, allowing for dynamic memory region allocation and signal path adjustment based on congestion information to reduce delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If memory devices are shared by multiple host devices, then resource utilization is improved, but signal transfer delay increases due to congestion
Solution Approach 1:
The patent implements dynamic memory region allocation where the interconnect device adjusts the mapping between host devices and memory regions based on real-time congestion information. This dynamic reconfiguration allows the system to adapt to changing load conditions, redirecting traffic away from congested memory regions to reduce signal transfer delay while maintaining high memory sharing utilization.
2Productivity
If data transfer operations are increased, then productivity is improved, but interface bandwidth efficiency decreases due to congestion
Solution Approach 1:
The patent employs a feedback mechanism where congestion monitors continuously detect congestion levels in memory regions and provide this information to the interconnect device. The interconnect device uses this feedback to dynamically adjust memory region allocation, ensuring that data transfer operations are routed through non-congested paths. This maintains high productivity while optimizing interface bandwidth efficiency by avoiding redundant transfers through congested regions.
Data Source
AI summary
A computing system includes an interconnect device, a plurality of memory devices electrically coupled to communicate with the interconnect device, a plurality of host devices electrically coupled to communicate with the interconnect device and configured to generate requests for access to the plurality of memory devices via the interconnect device, and a plurality of congestion monitors. These congestion monitors are configured to generate congestion information by monitoring a congestion degree of signal transfers with respect to at least one of the plurality of memory devices and the interconnect device in real time. The computing system is also configured to control at least one of: a memory region allocation of the plurality of host devices to the plurality of memory devices, and a signal transfer path inside the interconnect device, based on the congestion information.