Method of hybrid compression acceleration utilizing special and general purpose processors

摘要

A hybrid mechanism whereby hardware acceleration is combined with software such that the compression rate achieved is significantly increased while maintaining the original compression ratio (e.g., using full DHT and not SHT or an approximation). The compression acceleration mechanism is applicable to a hardware accelerator tightly coupled with the general purpose processor. The compression task is divided and parallelized between hardware and software wherein each compression task is split into two acceleration requests: a first request that performs SHT encoding using hardware acceleration and provides post-LZ frequency statistics; and a second request that performs SHT decoding and DHT encoding using the DHT generated in software.

主权项

1. A hybrid method of compression acceleration, said method comprising:
performing, using a first hardware accelerator, a first partial compression task on uncompressed input data to generate a first result therefrom; performing, using software, a second partial compression task based on said first result to generate a second result therefrom; and performing, using a second hardware accelerator, a third partial compression task in accordance with said first result and said second result to generate a compressed output therefrom, wherein said third partial compression task comprises performing SHT decoding and DHT encoding.