building lapack3 packages with gfortran
In order to help with the transition from g77 to gfortran, I have tried to
build lapack3 libraries. I used the refblas3 libraries built
using -ffloat-store option for this purpose. I am using unstable, gfortran
4.2.1-0 .
case 1) If I build the lapack3 libraries without the -ffloat-store option,
then there is one failure in the test suite.
==> testing/ssvd.out <==
14: norm( I - (V' P') (P V) ) / ( N ulp )
M= 40, N= 30, type 10, seed=2365,2219, 454,1129, test( 9)= 41.08
SBD: 1 out of 5510 tests failed to pass the threshold
case 2) If I build the lapack3 libraries with the -ffloat-store option, then
there is one failure but at a different place.
==> testing/csep.out <==
11=Large, evenly spaced eigenvals. 15=Matrix with small random
entries.
Tests performed: See cdrvst.f
Matrix order= 20, type= 9, seed=1139,3868,2100,1985, result 101 is
8.472E+05
CST drivers: 1 out of 11664 tests failed to pass the threshold
The complete build log for case1, case2 can be found at
http://kamaraju.googlepages.com/build_lapack_log_20070724.txt
http://kamaraju.googlepages.com/build_lapack_log_20070725.txt
The patch used for case1 can be found at
http://kamaraju.googlepages.com/build_lapack_patch_20070724.txt
http://kamaraju.googlepages.com/build_lapack_patch_20070725.txt
I haven't had time to investigate the failure. But since the builds take
considerable amount of time, I thought the logs might be useful for someone
interested in fixing the issues.
$ gfortran -v
Using built-in specs.
Target: i486-linux-gnu
Configured
with: ../src/configure -v --enable-languages=c,c++,fortran,objc,obj-c++,treelang --prefix=/usr --enable-shared --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --enable-nls --with-gxx-include-dir=/usr/include/c++/4.2 --program-suffix=-4.2 --enable-clocale=gnu --enable-libstdcxx-debug --enable-mpfr --enable-targets=all --disable-werror --enable-checking=release --build=i486-linux-gnu --host=i486-linux-gnu --target=i486-linux-gnu
Thread model: posix
gcc version 4.2.1 (Debian 4.2.1-0)
hth
raju
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