EP 1141838 A1 20011010 - CONSERVATION OF SYSTEM MEMORY BANDWIDTH AND CACHE COHERENCY MAINTENANCE USING MEMORY CANCEL MESSAGES
Title (en)
CONSERVATION OF SYSTEM MEMORY BANDWIDTH AND CACHE COHERENCY MAINTENANCE USING MEMORY CANCEL MESSAGES
Title (de)
EINSPARUNG DER SYSTEMSPEICHERBANDBREITE UND AUFRECHTERHALTUNG DER CACHESPEICHERKOHÄRENZ MIT SPEICHERANNULIERUNGSNACHRICHTEN
Title (fr)
CONSERVATION DE LA LARGEUR DE BANDE DE MEMOIRE SYSTEME ET MAINTENANCE DE LA COHERENCE D'ANTEMEMOIRES A L'AIDE DE MESSAGES D'EFFACEMENT DE MEMOIRE
Publication
Application
Priority
- US 9919856 W 19990826
- US 21769998 A 19981221
- US 21721298 A 19981221
- US 21764998 A 19981221
- US 37097099 A 19990810
Abstract (en)
[origin: WO0038070A1] A messaging scheme that conserves system memory bandwidth and maintains cache coherency during a victim block write operation in a multiprocessing computer system (10) is described. A target node (72) receives a memory cancel response corresponding to a transaction, and aborts processing of the transaction in response to the memory cancel response. In one embodiment, the transaction is a victim block write and the memory cancel response is received from a source node (70). In another embodiment, the transaction is a read operation and the memory cancel response is received from a different node (76) having a modified copy of the data addressed by the read operation.
IPC 1-7
IPC 8 full level
G06F 12/08 (2006.01); G06F 12/0813 (2016.01); G06F 12/0817 (2016.01); G06F 15/177 (2006.01)
CPC (source: EP KR)
G06F 12/0813 (2013.01 - EP KR); G06F 12/0815 (2013.01 - KR); G06F 12/0828 (2013.01 - EP); G06F 13/1652 (2013.01 - KR); G06F 2212/2542 (2013.01 - EP); G06F 2212/621 (2013.01 - KR)
Citation (search report)
See references of WO 0038070A1
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 0038070 A1 20000629; EP 1141838 A1 20011010; EP 2320322 A2 20110511; EP 2320322 A3 20110803; JP 2002533813 A 20021008; JP 4718012 B2 20110706; KR 100615660 B1 20060825; KR 20010082376 A 20010829
DOCDB simple family (application)
US 9919856 W 19990826; EP 10183401 A 19990826; EP 99944008 A 19990826; JP 2000590062 A 19990826; KR 20017007742 A 20010619