Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Access authorization table for multi-processor caches










Image Number 2 for United States Patent #5230070.

A multi-processor (MP) system having shared storage is provided with locking of exclusivity status and read only status in multi-processor caches. The multi-processor system includes a plurality of processors, a shared main storage and a storage control element (SCE). The storage control element includes a global access authorization table (GAAT). Locking of exclusivity status in multi-processor caches is accomplished by providing at each processor a local access authorization table (AAT) containing access status for recently used data blocks wherein the size of a data block is a multiple of cache line size. The access status of a block in the local access authorization table is checked when the block is to be accessed by a processor. Only if the access status for a block is not found in the local access authorization table is authorization to access the block requested from the storage control element.








 
 
  Recently Added Patents
Anti-phishing system and method
Retransmission and retransmission request in data communication systems
Method for driving bistable display device
Patterned MR device with controlled shape anisotropy
Fluorescent molecule and method for detecting target nucleic acid
System and method for deposition in high aspect ratio magnetic writer heads
Single check memory devices and methods
  Randomly Featured Patents
Sampling hydrocarbons in a well using a flexible bag
Data processing method, transmitter, device, network element and base station
Image developing method utilizing sodium sulfide and ammonium polysulfide developer solution whereby exposed copper substrate surface changes color
Object inspection apparatus
Method for producing pellets from film
Overhead transmission conductor
Wear tip for rotary mineral breaker
Bar code addressing audio playing device
Terrestial-signal based exclusion zone compliance
Censoring assembly adapted for use with closed caption television