Invention Grant
- Patent Title: Iterative refinement apparatus
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Application No.: US14623310Application Date: 2015-02-16
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Publication No.: US09779061B2Publication Date: 2017-10-03
- Inventor: Christoph M. Angerer , Konstantinos Bekas , Alessandro Curioni , Silvio Dragone , Heiner Giefers , Christoph Hagleitner , Raphael C. Polig
- Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Tutunjian & Bitetto, P.C.
- Agent Keivan Razavi
- Priority: GB1403018.3 20140220
- Main IPC: G06F17/10
- IPC: G06F17/10 ; G06F17/16 ; G06F17/12

Abstract:
An iterative refinement apparatus configured to generate data defining a solution vector x for a linear system represented by Ax=b, where A is a predetermined matrix and b is a predetermined vector. An outer solver processes input data, defining the matrix A and vector b, in accordance with an outer loop of an iterative refinement method to generate said data defining the solution vector x. An inner solver processes data items in accordance with an inner loop of the iterative refinement method. The inner solver is configured to process said data items having variable bit-width and data format. A precision controller determines the bit-widths and data formats of the data items adaptively in dependence on the results of the processing steps of the iterative refinement method; the precision controller configured to control operation of the inner solver for processing said data items with the bit-widths and data formats.
Public/Granted literature
- US20150234783A1 ITERATIVE REFINEMENT APPARATUS Public/Granted day:2015-08-20
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