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:
May. 16, 2006
Filed:
Jul. 31, 2002
Toshihiko Kurihara, Kanagawa-ken, JP;
Hung Qui Le, Austin, TX (US);
Alexander Erik Mericas, Austin, TX (US);
Robert Dominick Mirabella, Round Rock, TX (US);
Michitaka Okuno, Nagano, JP;
Masahiro Tokoro, Kanagawa, JP;
Toshihiko Kurihara, Kanagawa-ken, JP;
Hung Qui Le, Austin, TX (US);
Alexander Erik Mericas, Austin, TX (US);
Robert Dominick Mirabella, Round Rock, TX (US);
Michitaka Okuno, Nagano, JP;
Masahiro Tokoro, Kanagawa, JP;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method and system for identifying instruction completion delays for a group of instructions in a computer processor. Each instruction in the group of instructions has a status indicator that identifies what is preventing that instruction from completing execution. Examples of completion delays are cache misses, data dependencies or simply the time required for an execution unit in the computer processor to process the instruction. As each instruction finishes executing, its associated status indicator is cleared to indicate that the instruction is no longer waiting to execute. The last instruction to execute is the instruction that is holding up completion of the entire group, and thus the cause for the completion delay of the last instruction is recorded as the cause of completion delay for the entire group.