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Intel Digital Random Number Generator

Gael Hofemeier, Intel, Intel Digital Random Number Generator(DRNG) Software Implementation Guide, here.

Download Article

Download Intel® Digital Random Number Generator (DRNG) Software Implementation Guide [PDF 572KB]
Download Rdrand manual and library (Linux* and OS X* version)
Download Rdrand manual and library (Windows* version)
Download Intel® Digital Random Number Generator software code examples

RDRAND Response Time and Reseeding Frequency

  • ~150 clocks per invocation
    Note: Varies with CPU clock frequency since constraint is shared data path from DRNG to cores.
  • Little contention until 8 threads
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