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You are here: Foswiki>ATLAS/Documentation Web>GeneralDocumentation>GccOptimBuildOptions (05 Sep 2012, CarstenAulbert)Edit Attach
GCC native compile mode
gcc knows the -mtunenative option to auto-detect what flags to use on the local machine. to find out the flags, run thisgcc -march=native -E -v - </dev/null 2>&1 | sed -n 's/.* -v - //p'Examples:
- titan2 (Opteron 2376)
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-march=amdfam10 -mcx16 -msahf -mpopcnt --param l1-cache-size=64 --param l1-cache-line-size=64 --param l2-cache-size=512 -mtune=amdfam10 - atlas1 (Xeon E5345)
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-march=core2 -mcx16 -msahf --param l1-cache-size=32 --param l1-cache-line-size=64 --param l2-cache-size=4096 -mtune=core2
DocumentationForm edit
| Title | GCC native compile and flags |
| Description | Which flags does GCC use when using native compile mode |
| Tags | gcc native optimization |
| Category | Developer |
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Topic revision: r1 - 05 Sep 2012, CarstenAulbert
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