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From: brooks@maddog.llnl.gov
Newsgroups: gnu.gcc
Subject: GCC performance on the Alliant
Message-ID: <21847@lll-winken.LLNL.GOV>
Date: 12 Mar 89 22:43:50 GMT
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Distribution: gnu
Organization: Lawrence Livermore National Laboratory
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After a patch or two I finally managed to get GCC 1.34 to compile a
rather large floating point intensive code for the Alliant.  GCC outperforms
PCC as is usual, but the Allian FX/C compiler producing code that is a little
more than twice as fast as GCC code.  I presume that the difference is mostly
pipeline scheduling that GCC lacks any knowledge of.  I remember someone
setting out to create a portable pipeline scheduler for GCC, the Alliant
might be a good test target for this.

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