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Vectorizing HIRLAM II: Using the autovect branch compiler.
- From: Toon Moene <toon at moene dot indiv dot nluug dot nl>
- To: fortran at gcc dot gnu dot org, gcc at gcc dot gnu dot org
- Date: Sat, 22 Oct 2005 11:50:57 +0200
- Subject: Vectorizing HIRLAM II: Using the autovect branch compiler.
L.S.,
Using the autovect branch compiler:
Using built-in specs.
Target: x86_64-unknown-linux-gnu
Configured with: ../gcc/configure --prefix=/usr/vec --disable-nls --disable-multilib --enable-languages=f95
Thread model: posix
gcc version 4.1.0 20051022 (experimental)
I now get the following results:
Number of potentially vectorizable loops: 9799.
Number of loops vectorized: 2658.
Number of loops not vectorized: 7141.
Of which:
- due to unhandled data-refs: 3078.
- due to complicated access patterns: 1573.
- due to undeterminable dependence: 1224.
- due to unsupported use in statement: 674.
- due to no vectype in statement (complex8): 238.
So this version of the compiler performs slightly better.
The reduction in the number of potentially vectorizable loops
is due to me rsync'ing a new version of HIRLAM where various
duplicated libraries have been merged.
Kind regards,
--
Toon Moene - e-mail: toon@moene.indiv.nluug.nl - phone: +31 346 214290
Saturnushof 14, 3738 XG Maartensdijk, The Netherlands
A maintainer of GNU Fortran 95: http://gcc.gnu.org/fortran/