The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 05, 2001
Filed:
Jan. 12, 1998
Angelo Casamatta, Milan, IT;
Bull HN Information Systems Italia S.p.A., Turin, IT;
Abstract
A data-processing system with cc-NUMA architecture including a plurality of nodes each constituted by at least one processor intercommunicating with a DRAM-technology local memory using a local bus, the nodes intercommunicating using remote interface bridges and at least one intercommunication ring. The at least one processor has access to a system memory space defined by memory addresses. Each node includes a unit for configuring the local memory, for uniquely mapping a first portion of the system memory space, which is different for each node, onto a portion of the local memory and for mapping the portion of the system memory space which as a whole is uniquely mapped onto a portion of the local memory of all the other nodes onto the remaining portion of the local memory, and a SRAM-technology memory for storing labels with associated with a block of data stored in the remaining portion of local memory and each comprising an index identifying the block and bits indicating a coherence state of the block so that the remaining portion of local memory in each node constitutes a remote cache of the node.