We saw a crash in many computers, in the octave check phase, where octave crashed.
It was due to atlas being built for AMD Family 10h, which has a special SSE
trick that others computer don't have.
For x86_64, atlas is for K7. And for i686, PII.
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build machine because that feature offsets the performance timings. We ignore
that check, however, because with binaries being pre-built on Hydra those
timings aren't accurate for the local machine in the first place. The build log
might show something such as the following:
| It appears you have cpu throttling enabled, which makes timings
| unreliable and an ATLAS install nonsensical. Aborting.
| See ATLAS/INSTALL.txt for further information
| Ignoring CPU throttling by user override!
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