Data processing system for processing vector data and method therefor
US6202130A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 17, 1998 |
| Grant date | Mar 13, 2001 |
| Priority date | — |
| Expiry date | Apr 17, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/6028
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A data processing system includes a data processor (10) coupled to a memory system having a first memory, such as an L1 data cache (16), arranged with a second memory (such as an L2 cache) at a lower hierarchical level. The data processor (10) prefetches data elements of a vector into the first memory prior to processing such data elements. If a requested data element is not present in the first memory, a load request is issued to the second memory and to lower levels of the memory hierarchy until the requested data element is finally retrieved and stored in the first memory. The data processor (10) continues to prefetch subsequent data elements of the vector by considering the length of the data element and the stride of the vector. In one embodiment, the data processor (10) prefetches the vector into the first memory in response to a single data stream touch load (DST) instruction (100).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.