Methods and apparatus for initiating and resynchronizing multi-cycle SIMD instructions
US6622234B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 2000 |
| Grant date | Sep 16, 2003 |
| Priority date | — |
| Expiry date | Mar 5, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/3887
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Techniques for adding more complex instructions and their attendant multi-cycle execution units with a single instruction multiple data, stream (SIMD) very long instruction word (VLIW) processing framework are described. In one aspect, an initiation mechanism also acts as a resynchronization mechanism to read the results of multi-cycle execution. This multi-purpose mechanism operates with a short instruction word (SIW) issue of the multi-cycle instruction, in a sequence processor (SP) alone, with a VLIW, and across all processing elements (PEs) individually or as an array of PEs. A number of advantageous floating point instructions are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.