Patent · US Active

Distributed residue-checking of a floating point unit

US8566383B2 · kind B2 · utility

2Cited by

11References

13Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Son T. Dao · Stuttgart, DE
Juergen Haess · Schenefeld, DE
Michael K. Kroener · Ehningen, DE
Silvia M. Mueller · Altdorf, DE
Jochen Preiss · Eppelheim, DE

Key dates

Filing date	Oct 17, 2008
Grant date	Oct 22, 2013
Priority date	—
Expiry date	Dec 13, 2031

Classification

Technology area (CPC G)Physics
CPC primaryG06F7/483
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A distributed residue checking apparatus for a floating point unit having a plurality of functional elements performing floating-point operations on a plurality of operands. The distributed residue checking apparatus includes a plurality of residue generators which generate residue values for the operands and the functional elements, and a plurality of residue checking units distributed throughout the floating point unit. Each residue checking unit receives a first residue value and a second residue value from respective residue generators and compares the first residue value to the second residue value to determine whether an error has occurred in a floating-point operation performed by a respective functional element.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.