Handling data cache misses out-of-order for asynchronous...

Details Handling data cache misses out-of-order for asynchronous... Handling data cache misses out-of-order for asynchronous...

2011-03-01

2011-03-01

Coleman, Eric (Department: 2183)

Electrical computers and digital processing systems: processing

Processing control

C712S225000

Reexamination Certificate

active

07900024

ABSTRACT:
Mechanisms for handling data cache misses out-of-order for asynchronous pipelines are provided. The mechanisms associate load tag (LTAG) identifiers with the load instructions and uses them to track the load instruction across multiple pipelines as an index into a load table data structure of a load target buffer. The load table is used to manage cache “hits” and “misses” and to aid in the recycling of data from the L2 cache. With cache misses, the LTAG indexed load table permits load data to recycle from the L2 cache in any order. When the load instruction issues and sees its corresponding entry in the load table marked as a “miss,” the effects of issuance of the load instruction are canceled and the load instruction is stored in the load table for future reissuing to the instruction pipeline when the required data is recycled.

REFERENCES:
patent: 5590368 (1996-12-01), Heeb et al.
patent: 5828860 (1998-10-01), Miyaoku et al.
patent: 6173410 (2001-01-01), Bondi et al.
patent: 6216219 (2001-04-01), Cai et al.
patent: 2003/0061470 (2003-03-01), Yeh
patent: 2003/0126379 (2003-07-01), Kaushik et al.
patent: 2007/0022278 (2007-01-01), Abernathy et al.
Martinez, Jose F., et al., Cherry: Checkpointed Early Resource Recycling in Out-of-order Microprocessors, 2002, IEEE, pp. 3-14.

Affiliated with

Also associated with

Rating

Handling data cache misses out-of-order for asynchronous... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Handling data cache misses out-of-order for asynchronous..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Handling data cache misses out-of-order for asynchronous... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2716654