Torbjorn Granlund tg at
Thu Feb 16 07:54:02 CET 2012

nisse at (Niels Möller) writes:

  > But first MUL_TOOM43_TO_TOOM54_THRESHOLD needs to be measured and set to
  > some default.
  I have pushed in an attempt at tuning code. Please have a look to see if
  makes sense. I measure a line with an operand size ratio 5/6. On this
  core2 machine I get
  #define MUL_TOOM43_TO_TOOM54_THRESHOLD     100
  I set the default to 150, since other tuned thresholds seem to be a bit
  smaller than the defaults.
I haven't yet admired the code, but magically it is now tabled with the
other thtresholds:


More information about the gmp-devel mailing list