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  • Committer: Bazaar Package Importer
  • Author(s): Sylvestre Ledru
  • Date: 2009-09-17 23:31:54 UTC
  • mto: (2.2.1 experimental)
  • mto: This revision was merged to the branch mainline in revision 10.
  • Revision ID: james.westby@ubuntu.com-20090917233154-9esw88ub02twbuab
Tags: upstream-3.8.3
Import upstream version 3.8.3

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CONFIG/gcc3x86.txt
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ATLAS has detected that you are running on an x86 architecture
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(eg., Athlon, P4, PIII, etc), but do not have a pre-2.96 gcc installed.
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Using gcc 3/2.96 will result in a performance loss of 10-20% IN THE BEST CASE
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over a gcc previous to 2.96.  If your install goes slightly wrong, performance
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drops of 50% are more normal with these compilers.  Full details of this
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problem can be found at:
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   http://www.cs.utk.edu/~rwhaley/ATLAS/gcc30.html
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In the meantime, we suggest you abondon this ATLAS install, and install a gcc
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that delivers decent x86 performance, and restart the install then.  You
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do not need to be root to install, and full instructions, along with all
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needed files, are given in the ATLAS errata file at:
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   http://math-atlas.sourceforge.net/errata.html#UnixGccInst
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