Mixed-Format Hardware Instructions for Fused Conversion Multiplication
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Solution Overview
Problem
Existing graphics processors lack robust support for mixed format hardware instructions, requiring software conversions or explicit data type changes when operands have different data types, which hinders efficient processing.
Innovation Solution
Implementing circuitry for fused format conversion multiplies that directly perform operations on mixed data types within the graphics processor, eliminating the need for software conversions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If software conversion or explicit data type conversion is used for mixed format operations, then data type compatibility is achieved, but processing time increases and efficiency decreases
Solution Approach 1:
The patent combines the data type conversion function and the arithmetic operation function into a single fused hardware instruction. The conversion circuitry is integrated within the functional unit, allowing mixed-format operands to be converted and operated upon in one unified process rather than through separate software conversion steps followed by arithmetic operations.
Solution Approach 2:
The patent introduces specialized conversion circuitry as an intermediary component within the functional unit. This conversion circuitry acts as a mediator that automatically handles data type conversions between different formats (e.g., integer to floating-point) before the arithmetic operation, eliminating the need for external software conversion routines.
2Adaptability or versatility
If separate conversion circuitry is used for mixed format operations, then data type conversion capability is provided, but hardware complexity increases
Solution Approach 1:
The functional unit is designed with multi-functionality, serving both as a conversion unit and an arithmetic operation unit. The same hardware resources are utilized for both data type conversion and arithmetic operations, eliminating the need for completely separate dedicated conversion hardware and reducing overall system complexity.
Solution Approach 2:
The patent merges the conversion functionality and arithmetic operation functionality into a single integrated functional unit. This consolidation reduces hardware complexity by eliminating redundant components and interconnections that would exist if separate conversion circuits and arithmetic units were implemented independently.
3Productivity
If fused format conversion multiply is implemented, then processing speed increases, but hardware complexity increases
Solution Approach 1:
The patent combines conversion and arithmetic operations into a single fused instruction that executes in one hardware pass. This merging eliminates the need for multiple sequential operations (conversion then arithmetic), thereby increasing processing speed while the integration keeps hardware overhead manageable through shared resources.
Data Source
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Figure 2B~2C
AI summary
One embodiment provides a graphics processor comprising a memory interface and a processing resource coupled with the memory interface. The processing resource including a mixed format functional unit configured to receive an integer input and a floating-point input, perform a fused format conversion multiply operation on the integer input and the floating-point input to generate a floating-point result, and output the floating-point result.