Dynamically Reconfigurable Co-processor for Heterogeneous Multi-processor Systems
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Solution Overview
Problem
Multi-processor systems with fixed instruction sets face limitations in optimizing performance due to the inability to dynamically adjust instruction sets, leading to inefficiencies in processing diverse executable instructions across heterogeneous processors.
Innovation Solution
A multi-processor system is developed with a dynamically reconfigurable co-processor that can change its instruction set to match the requirements of specific executable instructions, allowing it to process instructions not natively supported by the host processor, while maintaining cache coherency between processors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multiple homogeneous processors with fixed instruction sets are used, then system stability and ease of operation are improved, but adaptability to diverse executable instructions deteriorates
Solution Approach 1:
The co-processor's instruction set is made dynamically reconfigurable rather than fixed. The instruction set can be changed at runtime to match the requirements of different executable instructions, allowing the system to adapt to diverse workloads while maintaining operational simplicity through automated configuration management.
Solution Approach 2:
The co-processor is designed with multi-functionality, capable of implementing multiple different instruction sets through dynamic reconfiguration. This allows a single processor unit to perform various computational tasks that would otherwise require multiple specialized processors, enhancing system versatility without increasing physical processor count.
2Adaptability or versatility
If a dynamically reconfigurable co-processor is implemented, then adaptability to diverse instructions is improved, but device complexity increases
Solution Approach 1:
An instruction set management mechanism acts as an intermediary between the host processor and the reconfigurable co-processor. This intermediary automatically handles the complexity of instruction set selection, configuration, and loading, shielding the user from the underlying complexity while enabling adaptive processing. The management mechanism translates high-level execution requirements into appropriate co-processor configurations.
3Device complexity
If fixed instruction sets are used in multi-processor systems, then device complexity is reduced, but productivity in processing diverse instructions deteriorates
Solution Approach 1:
The instruction set parameters of the co-processor are dynamically changed to match the computational requirements of different executable instructions. By altering the instruction set configuration parameter rather than the physical hardware, the system achieves high productivity for diverse workloads without increasing device complexity. The reconfiguration allows optimal instruction set selection for each computational task.
Data Source
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AI summary
A multi-processor system comprises at least one host processor, which may comprise a fixed instruction set, such as the well-known x86 instruction set. The system further comprises at least one co-processor, which comprises dynamically reconfigurable logic that enables the co-processor's instruction set to be dynamically reconfigured. In this manner, the at least one host processor and the at least one dynamically reconfigurable co-processor are heterogeneous processors having different instruction sets. Further, cache coherency is maintained between the heterogeneous host and co¬ processors. And, a single executable file may contain instructions that are processed by the multi-processor system, wherein a portion of the instructions are processed by the host processor and a portion of the instructions are processed by the co-processor.