Syed Imranul Haq

US Patent:

7487335, Feb 3, 2009

Filed:

Oct 14, 2005

Appl. No.:

11/251427

Inventors:

Shailender Chaudhry - San Francisco CA, US
Syed I. Haq - Sunnyvale CA, US
Mohammed M. Rahman - San Jose CA, US
Khanh Luu - San Jose CA, US

Assignee:

Sun Microsystems, Inc. - Santa Clara CA

International Classification:

G06F 9/00

US Classification:

712214, 712218, 712228

Abstract:

One embodiment of the present invention provides a system that facilitates deferring execution of instructions with unresolved data dependencies as they are issued for execution in program order. During a normal-execution mode, the system issues instructions for execution in program order. Upon encountering an unresolved data dependency during execution of an instruction, the system generates a checkpoint, which includes a checkpointed version of the register file. Next, the system defers the instruction, which involves storing the instruction along with any resolved source operands for the instruction into a deferred buffer. The system then executes subsequent instructions in an execute-ahead mode which operates on a future version of the register file, wherein instructions that cannot be executed because of unresolved data dependencies are deferred, and wherein other non-deferred instructions are executed in program order. If the unresolved data dependency is resolved during the execute-ahead mode, the system executes deferred instructions in a deferred mode, which operates on a deferred version of the register file, wherein deferred instructions which can be executed are executed in program order, and wherein other deferred instructions that still cannot be executed because of unresolved data dependencies are deferred again.

US Patent:

7457858, Nov 25, 2008

Filed:

Apr 2, 2001

Appl. No.:

09/824997

Inventors:

Gilbert Levesque - Mountain View CA, US
Dharmendra J. Naik - San Jose CA, US
Mandar A. Shinde - Milpitas CA, US
Avaneesh C. Arora - San Jose CA, US
Syed F. Haq - San Jose CA, US

Assignee:

Fujitsu Limited - Kawasaki

International Classification:

G06F 15/173
G06F 15/16

US Classification:

709223, 709206, 709232

Abstract:

A network management system includes a network management server and one or more clients initiating network management messages between the server and network elements. The server parses the network management messages and communicates each message to client consoles having filtering criteria satisfied by the contents of the message.