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Design of quadruple precision multiplier architectures with SIMD single and double precision support
- Source :
- Integration. 65:163-174
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- This paper proposes architectures for dual-mode and tri-mode dynamically configurable multiplier for quadruple precision arithmetic. The proposed dual-mode QPdDP multiplier architectures can either compute on a pair of quadruple precision (QP) operands or provide SIMD support for two-parallel (dual) sets of double precision (DP) operands. The proposed tri-mode QPdDPqSP multiplier architectures are aimed to include the four-parallel (quad) single precision (SP) along with dual-DP and a QP operand processing. For the underlying largest sub-component, the mantissa multiplier, two methods are analyzed to design the dual-mode/tri-mode architectures. One is based on the Karatsuba method, and in another a dual-mode/tri-mode Radix-4 Modified Booth (MB) multiplier is proposed. The proposed dual-mode/tri-mode MB multiplier requires few extra 2:1 MUXs as an overhead compared to a simple MB multiplier. To support dual-mode/tri-mode functioning other important sub-components of the FP multiplication are also re-designed for multi-mode support. The proposed architectures are synthesized using UMC 90 nm ASIC technology, and are compared against prior literature in terms of area, period, and a unified metric “Area (Gate Count) × Period (FO4) × Latency × Throughput (in cycles)”. The dual-mode/tri-mode FP architectures with MB mantissa multipliers shows better timings, however, those with Karatsuba mantissa multipliers acquires smaller area.
- Subjects :
- Quadruple-precision floating-point format
Computer science
020208 electrical & electronic engineering
Karatsuba algorithm
Double-precision floating-point format
02 engineering and technology
Operand
Single-precision floating-point format
020202 computer hardware & architecture
Significand
Gate count
Hardware and Architecture
0202 electrical engineering, electronic engineering, information engineering
Multiplier (economics)
Hardware_ARITHMETICANDLOGICSTRUCTURES
Electrical and Electronic Engineering
Arithmetic
Software
Subjects
Details
- ISSN :
- 01679260
- Volume :
- 65
- Database :
- OpenAIRE
- Journal :
- Integration
- Accession number :
- edsair.doi...........b4744506d8f51b3a1b1c96fa58f1b2be