Host Processor Caching for Accelerator Configuration Boot
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Solution Overview
Problem
Managing the boot and configuration of accelerators in data centers is complex due to the need for multiple configuration files with specific sequencing and interdependencies, particularly for programmable ICs that require complementary clearing configuration bitstreams, which can be cumbersome and error-prone.
Innovation Solution
A method and system where a host processor caches and manages configuration files, including primary and secondary configuration files, and provides them to accelerators during boot and configuration events, using containers that store metadata and sequencing information to ensure correct loading and updating of configuration bitstreams, thereby automating the boot and configuration process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple configuration files are manually managed during accelerator boot, then configuration functionality can be achieved, but the process becomes complex and error-prone due to sequencing requirements and interdependencies
Solution Approach 1:
The patent introduces an intermediary boot management system that mediates between the configuration files and the accelerator device. This intermediary automatically handles the complex sequencing and interdependency management of multiple configuration files, eliminating manual management complexity while ensuring correct configuration application order.
Solution Approach 2:
The boot management system implements self-service by automatically detecting configuration file requirements, determining proper loading sequences, and managing configuration file interdependencies without external intervention. The system serves itself by maintaining an internal model of configuration relationships and autonomously resolving the complex boot configuration process.
2Productivity
If configuration files are loaded directly from storage during boot, then the accelerator can be configured, but the process is time-consuming due to repeated reads and lack of caching
Solution Approach 1:
The patent applies preliminary action by caching configuration files in memory during system initialization before the accelerator boot process begins. This preliminary caching action prepares configuration data for rapid access, eliminating the need for time-consuming repeated reads from storage during the actual boot and reconfiguration processes.
Solution Approach 2:
The system creates copies of configuration files by loading them from persistent storage into volatile memory caches. These copies enable rapid access during boot and reconfiguration operations without repeatedly accessing the original storage media, significantly reducing configuration loading time while preserving the original configuration data.
3Productivity
If configuration files are cached in local memory, then subsequent configuration events are faster, but memory resources are consumed by cached files
Solution Approach 1:
The patent dynamically changes the parameter of memory allocation by implementing a caching strategy that adjusts cached configuration file sizes and quantities based on system state, reconfiguration frequency, and available memory resources. This parameter adjustment optimizes the balance between reconfiguration speed and memory consumption by caching only the most frequently accessed configuration files.
Solution Approach 2:
The system applies local quality by selectively caching configuration files based on their specific access patterns and importance. Not all configuration files are cached uniformly; instead, the system identifies and caches only those configuration files that benefit most from rapid access, optimizing memory utilization while maintaining high reconfiguration performance for critical configurations.
Data Source
AI summary
Managing an accelerator may include responsive to determining a first container including a first configuration file and a second configuration file, caching, using a host processor, the second configuration file within a local memory of the host processor. The first configuration file may be provided, using the host processor, to a device of the accelerator. Responsive to a configuration event, the host processor may provide the cached second configuration file from the local memory to the device of the accelerator.