Performance/Power Space Exploration for Binary64 Division Units

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Abstract

The digit-recurrence division algorithm is used in several high-performance processors because it provides good tradeoffs in terms of latency, area and power dissipation. In this work we develop a minimally redundant radix-8 divider for binary64 (double-precision) aiming at obtaining better energy efficiency in the performance-per-watt space. The results show that the radix-8 divider, when compared to radix-4 and radix-16 units, requires less energy to complete a division for high clock rates.
Original languageEnglish
JournalI E E E Transactions on Computers
Volume65
Issue number5
Pages (from-to)1671-1677
ISSN0018-9340
DOIs
Publication statusPublished - 2016

Keywords

  • Floating-point
  • Division
  • Energy efficiency
  • Digit-recurrence

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