Origin 2000 Performance Prescription

• Always use dplace on all codes

• Always use

-LNO:cache_size2=4096

• For accuracy compile and link with

-O2 -IPA -SWP:=ON -LNO -TENV:X=0-5

• or

  -Ofast=ip27 -OPT:roundoff=0-3
  
  -OPT:IEEE_arithmetic=1-3

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