Presentation 2006-11-28
Computational Complexity of Simultaneous Optimization of Control Schedule and Skew in Datapath Synthesis
Takayuki OBATA, Mineo KANEKO,
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Abstract(in English) As well as the schedule affects system performance, the control skew, i.e., the arrival time difference of control signals between registers, can be utilized to improve the system performance. In this paper, we discuss the simultaneous optimization of the control step assignment and the control skew assignment, and we prove that, even if the execution sequence of operations assigned to the same resource is fixed and only the control step assignment remains unfixed, the simultaneous optimization problem under a fixed clock period is NP-hard. The proof is based on the reduction from 3SAT problem. The result of this paper would become an important base for various types of the intentional-skew-aware system optimization problems.
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Keyword(in English) High-Level Synthesis / Skew Scheduling / Control Scheduling / NP-hard
Paper # VLD2006-65,DC2006-52
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Committee DC
Conference Date 2006/11/21(1days)
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Language ENG
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Computational Complexity of Simultaneous Optimization of Control Schedule and Skew in Datapath Synthesis
Sub Title (in English)
Keyword(1) High-Level Synthesis
Keyword(2) Skew Scheduling
Keyword(3) Control Scheduling
Keyword(4) NP-hard
1st Author's Name Takayuki OBATA
1st Author's Affiliation School of Information Science, Japan Advanced Institute of Science and Technology()
2nd Author's Name Mineo KANEKO
2nd Author's Affiliation School of Information Science, Japan Advanced Institute of Science and Technology
Date 2006-11-28
Paper # VLD2006-65,DC2006-52
Volume (vol) vol.106
Number (no) 390
Page pp.pp.-
#Pages 6
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