Processor Compression Instruction to Eliminate Task Switch Overhead

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Solution Overview

Problem

Existing computing environments face inefficiencies in compression and decompression operations due to the need for multiple primitive software instructions, which increase program complexity and require task switches to input/output devices, leading to reduced performance.

Innovation Solution

A single architected machine instruction is used on a general-purpose processor to perform compression and decompression functions, eliminating the need for multiple primitive instructions and avoiding task switches by executing these operations directly on the processor, compliant with industry standards like the DEFLATE format.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple primitive software instructions are used to perform compression and decompression operations, then the operations can be performed on a general-purpose processor, but program complexity increases and execution time is extended

Engineering Contradiction:
Improveprocessor compatibilityVSAvoidprogram complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent merges multiple primitive software instructions into a single dedicated hardware instruction for compression and decompression operations. This single instruction encompasses the functionality of numerous software instructions, thereby reducing program complexity while maintaining execution on general-purpose processors.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent introduces a dedicated compression instruction as an intermediary between the general-purpose processor and the compression functionality. This instruction acts as a mediator that handles the complex compression operations internally, shielding the programmer from the complexity of multiple primitive instructions while maintaining compatibility with general-purpose processors.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Adaptability or versatility

If multiple primitive software instructions are used to perform compression and decompression operations, then the operations can be performed, but execution time is extended and performance is reduced

Engineering Contradiction:
Improvesoftware implementation flexibilityVSAvoidexecution speed
Core Design Contradiction:
Adaptability or versatilityVSProductivity

Solution Approach 1:

The patent combines multiple software instructions into a single hardware instruction, allowing the processor to execute compression and decompression operations in a single cycle rather than requiring multiple sequential software instructions. This merging dramatically improves execution speed and overall productivity.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent replaces the mechanical software instruction execution model with a dedicated hardware instruction that can be executed directly by the processor in a single cycle. This substitution eliminates the overhead of multiple software instruction executions and significantly accelerates compression and decompression operations.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Ease of manufacture

If compression and decompression operations are dispatched to input/output devices, then the operations can be performed, but task switches are required which reduce performance

Engineering Contradiction:
Improveoperation availabilityVSAvoidtask switch overhead
Core Design Contradiction:
Ease of manufactureVSProductivity

Solution Approach 1:

The patent merges the compression and decompression functionality directly into the general-purpose processor instruction set, eliminating the need to dispatch operations to separate I/O devices. This integration allows operations to be performed within the processor without requiring task switches, thereby improving productivity.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent makes the general-purpose processor universal by enabling it to perform both general-purpose computing and specialized compression/decompression operations through a single instruction. This multi-functionality eliminates the need for separate I/O devices and task switches, as the processor itself can handle all operations.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS10630312B1General-purpose processor instruction to perform compression/decompression operations
Publication Date: 2020.04.21 INTERNATIONAL BUSINESS MACHINE CORPORATION
  • US10630312B1 patent drawing
  • US10630312B1 patent drawing
  • US10630312B1 patent drawing

AI summary

A DEFLATE Conversion Call general-purpose processor instruction. An instruction is obtained by a general-purpose processor of the computing environment. The instruction is a single architected instruction of an instruction set architecture that complies to an industry standard for compression. The instruction is executed, and the executing includes transforming, based on a function to be performed by the instruction being a compression function or a decompression function, state of input data between an uncompressed form of the input data and a compressed form of the input data to provide a transformed state of data. The transformed state of the data is provided as output to be used in performing a task.