Invention Grant
- Patent Title: Chaining between exposed vector pipelines
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Application No.: US13795435Application Date: 2013-03-12
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Publication No.: US09250916B2Publication Date: 2016-02-02
- Inventor: Thomas W. Fox , Bruce M. Fleischer , Hans M. Jacobson , Ravi Nair
- 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: Cantor Colburn LLP
- Main IPC: G06F9/30
- IPC: G06F9/30 ; G06F9/40 ; G06F13/00 ; G06F9/38

Abstract:
Embodiments include a method for chaining data in an exposed-pipeline processing element. The method includes separating a multiple instruction word into a first sub-instruction and a second sub-instruction, receiving the first sub-instruction and the second sub-instruction in the exposed-pipeline processing element. The method also includes issuing the first sub-instruction at a first time, issuing the second sub-instruction at a second time different than the first time, the second time being offset to account for a dependency of the second sub-instruction on a first result from the first sub-instruction, the first pipeline performing the first sub-instruction at a first clock cycle and communicating the first result from performing the first sub-instruction to a chaining bus coupled to the first pipeline and a second pipeline, the communicating at a second clock cycle subsequent to the first clock cycle that corresponds to a total number of latch pipeline stages in the first pipeline.
Public/Granted literature
- US20140281386A1 CHAINING BETWEEN EXPOSED VECTOR PIPELINES Public/Granted day:2014-09-18
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