Yasushi Umezawa

7315895, Jan 1, 2008

May 17, 2002

10/150618

Kazunori Masuyama - Kanazawa, JP
Yasushi Umezawa - Cupertino CA, US
Jeremy J. Farrell - Campbell CA, US
Sudheer Miryala - San Jose CA, US
Takeshi Shimizu - Sunnyvale CA, US
Hitoshi Oi - Boca Raton FL, US
Patrick N. Conway - Los Altos CA, US

Fujitsu Limited - Kawasaki

G06F 15/173
G06F 15/00
G06F 11/00

709226, 712 13, 714 10, 714 25

A system and method for fault containment and error handling within a domain in a partitioned computer system includes a system manager having read and write access to a resource definition table. The system manager is adapted to quiesce the system when failure occurs within a domain, identify an allocated resource associated with the failed domain, identify a non-failed domain, and exit the quiesce mode for the non-failed domain, thereby containing a failure within the failed domain. The system manager further handles an error within the failed domain by deallocating a resource allocated to the failed domain so that the resource becomes available to non-failed domains.

7380001, May 27, 2008

May 17, 2002

10/150618

Kazunori Masuyama - Kanazawa, JP
Yasushi Umezawa - Cupertino CA, US
Jeremy J. Farrell - Campbell CA, US
Sudheer Miryala - San Jose CA, US
Takeshi Shimizu - Sunnyvale CA, US
Hitoshi Oi - Boca Raton FL, US
Patrick N. Conway - Los Altos CA, US

Fujitsu Limited - Kawasaki

G06F 15/173
G06F 15/00
G06F 11/00

709226, 712 13, 714 10, 714 25

A system and method for fault containment and error handling within a domain in a partitioned computer system includes a system manager having read and write access to a resource definition table. The system manager is adapted to quiesce the system when failure occurs within a domain, identify an allocated resource associated with the failed domain, identify a non-failed domain, and exit the quiesce mode for the non-failed domain, thereby containing a failure within the failed domain. The system manager further handles an error within the failed domain by deallocating a resource allocated to the failed domain so that the resource becomes available to non-failed domains.

6490630, Dec 3, 2002

Apr 2, 1999

09/285316

Wing Leong Poon - Santa Clara CA
Patrick J. Helland - Bellevue WA
Takeshi Shimizu - San Jose CA
Yasushi Umezawa - Cupertino CA
Wolf-Dietrich Weber - San Jose CA

Fujitsu Limited

G06F 1516

709235, 709232, 709234, 370229, 370231, 370232

A computer architecture for avoiding a deadlock condition in an interconnection network comprises a messaging buffer having a size pre-calculated to temporarily store outgoing messages from a node. Messages are classified according to their service requirements and messaging protocols, and reserved quotas in the messaging buffer are allocated for different types of messages. The allocations of the reserved quotas are controlled by a mechanism that, to prevent overflow, limits the maximum number of messages that can be outstanding at any time. The messaging buffer is sized large enough to guarantee that a node is always able to service incoming messages, thereby avoiding deadlock and facilitating forward progress in communications. The buffer may be bypassed to improve system performance when the buffer is empty or when data in the buffer is corrupted. In addition, a multicast engine facilitates dense packing of the buffer and derives information from a message header to determine whether there is a multicast to perform and to permit passage of messages.