发明名称 |
Register file bit and method for fast context switch |
摘要 |
A register file bit includes a primary latch and a secondary latch with a feedback path and a context switch mechanism that allows a fast context switch when execution changes from one thread to the next. A bit value for a second thread of execution is stored in the primary latch, then transferred to the secondary latch. The bit value for a first thread of execution is then written to the primary latch. When a context switch is needed (when the first thread stalls and the second thread needs to begin execution), the register file bit can perform a context switch from the first thread to the second thread in a single clock cycle. The register file bit contains a backup latch inside the register file itself so that minimal extra wire paths are needed to or from the existing register file.
|
申请公布号 |
US2005081018(A1) |
申请公布日期 |
2005.04.14 |
申请号 |
US20030682134 |
申请日期 |
2003.10.09 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
LUICK DAVID ARNOLD |
分类号 |
G06F9/30;G06F9/38;G06F9/46;(IPC1-7):G06F9/30 |
主分类号 |
G06F9/30 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|