Dynamic Load Profile Adjustment for Power Swing Mitigation

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Solution Overview

Problem

Large power swings caused by sudden starts and stops of bulk-synchronous workloads in datacenters lead to equipment damage and energy inefficiencies, with existing solutions requiring costly infrastructure modifications like batteries and capacitor banks.

Innovation Solution

Implementing on-die current source and sink circuits in processing devices, such as GPUs, to dynamically adjust load profiles during workload events, allowing for customizable ramp-up and ramp-down rates to mitigate power swings without additional hardware costs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If bulk-synchronous workloads are started or stopped suddenly to avoid glitching, then processing efficiency is improved, but large power swings occur causing equipment damage and energy inefficiencies

Engineering Contradiction:

Improveprocessing efficiencyVSAvoidpower swings

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The system dynamically adjusts the load profile of processing devices during bulk-synchronous workloads by modifying clock frequencies and power states in real-time. The cluster manager continuously monitors workload progress and adjusts operational parameters to maintain synchronization while reducing power consumption during idle periods, thereby eliminating large power swings without sacrificing processing efficiency.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The invention changes operational parameters such as clock frequencies, power states, and load distribution across processing devices. By dynamically adjusting these parameters based on workload synchronization requirements, the system maintains high processing efficiency during active computation while reducing power consumption during idle synchronization periods, thus preventing harmful power swings.

Inventive Principle:

Principle #35Parameter changes

2Stability of the object's composition

If power delivery specifications are enforced to limit power swings, then grid stability is improved, but processing performance may be degraded

Engineering Contradiction:

Improvegrid stabilityVSAvoidprocessing performance

Core Design Contradiction:

Stability of the object's compositionVSProductivity

Solution Approach 1:

The system implements periodic adjustments to processing device operation during bulk-synchronous workloads. By synchronizing power state transitions with computational barriers and synchronization points, the system maintains grid stability through regular, predictable power consumption patterns while preserving overall processing performance through efficient use of full-power intervals.

Inventive Principle:

Principle #19Periodic action

3Device complexity

If traditional power management approaches are used, then simplicity is maintained, but response time to power swings is slow (minutes instead of milliseconds)

Engineering Contradiction:

Improvemanagement simplicityVSAvoidresponse time

Core Design Contradiction:

Device complexityVSLoss of time

Solution Approach 1:

The cluster manager implements a feedback mechanism that continuously monitors workload progress, synchronization status, and power consumption patterns. Based on this real-time feedback, the system automatically adjusts load profiles and operational parameters of processing devices, enabling millisecond-level response to power swing conditions while maintaining automated simplicity without complex manual intervention.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS20240004705A1Devices, systems, and methods for handling power swings

Publication Date: 2024.01.04 NVIDIA CORP

AI summary

A device comprises one or more circuits that dynamically adjust a load profile of one or more processing devices processing a workload in a bulk-synchronous mode.