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Opened 9 years ago

Last modified 9 years ago

#337 new setup

Sherpa on Intel Sandy Bridge

Reported by: Stefan Hoeche Owned by: support@sherpa-mc.de
Priority: major Milestone:
Component: Unknown Version:
Keywords: Cc:

Description

If you run gcc on machines with Intel Sandy Bridge processors, consider using one of the following optimization flags for Sherpa 

  -march=corei7-avx
  -march=core-avx2

Find out which instruction set the native architecture compilation would support with 

  gcc -march=native -Q --help=target

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Change History (2)

comment:1 Changed 9 years ago by Stefan Hoeche

Milestone: rel-2.2.0
Type: defect → setup
Version: 2.1.1

comment:2 Changed 9 years ago by Frank Siegert

On a Haswell processor (i7-4600U) I don't see any difference between the default gcc settings and any of the following: 

-march=native
-march=haswell
-march=corei7-avx
-march=core-avx2

I'm running on Archlinux x86_64 with gcc 4.9.2... maybe the new gcc already picks that up automatically.

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