Run-time memory access uniformity checking
US10346055B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 28, 2017 |
| Grant date | Jul 9, 2019 |
| Priority date | — |
| Expiry date | Jan 5, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/1663
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Systems, apparatuses, and methods for performing run-time checking of access uniformity of vector memory access instructions are disclosed. A system includes a vector unit, a scalar unit, and a memory. The system performs a run-time check to determine if two or more threads of a wave have access uniformity to the memory prior to executing a vector memory access instruction for the wave on the vector unit. The system replaces the vector memory access instruction with a group of instructions responsive to determining that two or more threads of the wave have access uniformity to the memory. The group of instructions includes a scalar access instruction to memory followed by a cross-thread data sharing instruction. The scalar access instruction is executed on the scalar unit. Alternatively, the group of instructions can include a vector memory access instruction by only a single thread in each group having access uniformity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.