256-bit Execution Units for 512-bit Operations
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Solution Overview
Problem
Current processors face challenges in efficiently performing 512-bit operations due to the increased physical size and energy usage of 512-bit execution units, as well as the size and energy issues associated with dedicated 512-bit registers, which can be mitigated by using 256-bit execution resources to achieve 512-bit results without the need for 512-bit sources or execution units.
Innovation Solution
The approach involves using 256-bit data operands and execution resources to perform 512-bit operations by decoding instructions to map 256-bit operands to 512-bit equivalents, generating micro-operations for 256-bit execution circuits, and scheduling these operations to produce 512-bit results, either concurrently or sequentially using multiple 256-bit execution circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If 512-bit execution units are used to perform 512-bit operations, then operation capability is improved, but physical size and energy usage increase
Solution Approach 1:
The patent divides the 512-bit operation into two separate 256-bit operations executed by existing 256-bit execution units. This segmentation allows the system to achieve 512-bit operation capability without requiring a single large 512-bit execution unit, thereby reducing energy consumption and physical size while maintaining full functionality.
2Adaptability or versatility
If 512-bit execution units are used to perform 512-bit operations, then operation capability is improved, but physical size increases
Solution Approach 1:
The patent segments the 512-bit operation into two 256-bit operations that can be handled by existing 256-bit execution units. This approach avoids the need to physically add large 512-bit execution units to the processor, thereby maintaining compact physical size while enabling 512-bit operation capability through software-based coordination of smaller units.
3Adaptability or versatility
If dedicated 512-bit registers are added to support 512-bit operations, then operation capability is improved, but device complexity increases
Solution Approach 1:
The patent makes existing 256-bit registers and execution units universal by enabling them to handle 512-bit operations through software coordination. Instead of adding dedicated 512-bit registers, the system reuses existing 256-bit registers in a coordinated manner, thereby avoiding increased device complexity while achieving 512-bit operation capability.
4Use of energy by moving object
If 256-bit execution resources are used to achieve 512-bit results, then energy consumption is reduced, but operation complexity increases
Solution Approach 1:
The patent introduces software-based intermediaries (instruction translation and scheduling components) that coordinate multiple 256-bit execution units to perform 512-bit operations. These intermediaries handle the complexity of orchestrating multiple smaller operations, thereby reducing the energy consumption associated with using larger execution units while managing the operational complexity through software abstraction.
Data Source
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AI summary
Embodiments of systems, apparatuses, and methods for performing 512-bit operations are detailed. For example, an apparatus comprising: decoder circuitry to decode an instruction having fields for an opcode and at least one operand identifier; and execution circuitry to execute the decoded instruction to perform a 512-bit operation according to the opcode on the at least one operand, wherein at least one of the identified operand and the execution circuitry is less than 512-bit is detailed.