Intel Corporation

K S Venkatraman

David W Burns

Jason W Brandt

Eric A Sprangle

Ronak Singhal

Robert T George

Anwar Q Rohillah

Kenneth J Janik

Sangwook Kim

Method, apparatus, and system embodiments to assign priority to a thread when the thread is otherwise unable to proceed with instruction retirement. For at least one embodiment, the thread is one of a plurality of active threads in a multiprocessor system that includes memory livelock breaker logic and/or starvation avoidance logic. Other embodiments are also described and claimed.

Thread livelock unit

Method, apparatus and system embodiments to assign priority to a thread when the thread is otherwise unable to proceed with instruction retirement. For at least one embodiment, the thread is one of a plurality of active threads in a multiprocessor system that includes memory livelock breaker logic and/or starvation avoidance logic. Other embodiments are also described and claimed.

Thread livelock reduction unit

Multi-thread processing system for detecting and handling live-lock conditions by arbitrating livelock priority of logical processors based on a predertermined amount of time

In one embodiment of the present invention, a method includes invalidating an entry of a filter coupled to a pipeline resource if an update to the entry occurs during a first context; and flushing a portion of the pipeline resource corresponding to an address space including the entry.

Dynamically partitioning pipeline resources

A prefetching scheme to detect when a load misses the lower level cache and hits the next level cache. Consequently, the prefetching scheme utilizes the previous information for the cache miss to the lower level cache and hit to the next higher level of cache memory that may result in initiating a sidedoor prefetch load for fetching the previous or next cache line into the lower level cache. In order to generate an address for the sidedoor prefetch, a history of cache access is maintained in a queue.

Method and apparatus for prefetching data to a lower level cache memory

In a multithreaded processor, the efficiency of instruction processing may be improved by suspending an executing thread during the translation of a virtual memory address to a physical memory address when the address translation data must be retrieved from storage external to the processor. The suspension of an executing thread allows an address translation to be performed for an instruction in another thread while the address translation data needed for the first thread is retrieved.

Growing community of inventors

Hillsboro, OR, United States of America

K S Venkatraman