Compiling ma57 with "gfortran -O<n> -ftree-parallelize-loops=2 -c ma57.f -o ma57.o" produces the following error messages:
<n> = 1,2 ---------- ma57.f: In function 'ma57od': ma57.f:2724: error: edge from 676 to 686 should be marked irreducible ma57.f:2724: error: basic block 686 should be marked irreducible ma57.f:2724: error: edge from 686 to 679 should be marked irreducible ma57.f:2724: error: basic block 679 should be marked irreducible ma57.f:2724: error: edge from 679 to 124 should be marked irreducible ma57.f:2724: confused by earlier errors, bailing out <n> = 3 -------- ma57.f: In function 'ma57od': ma57.f:2724: error: edge from 840 to 850 should be marked irreducible ma57.f:2724: error: basic block 850 should be marked irreducible ma57.f:2724: error: edge from 850 to 843 should be marked irreducible ma57.f:2724: error: basic block 843 should be marked irreducible ma57.f:2724: error: edge from 843 to 160 should be marked irreducible ma57.f:2724: confused by earlier errors, bailing out Since the HSL codes are subject to restricted licenses, I am pretty sure that I am not supposed to include its source-code here. You can have a look at http://www.cse.scitech.ac.uk/nag/hsl/ though, if you are eligible to obtain a copy of ma57! My gcc version: Using built-in specs. Target: i686-pc-linux-gnu Configured with: /localdata/install/gcc/gcc-4.3.2/configure --prefix=/home/dwassel --program-suffix=-4.3.2 --enable-languages=c,c++,fortran --with-gmp=/home/dwassel --with-mpfr=/home/dwassel --with-arch=athlon64 --with-tune=athlon64 --enable-version-specific-runtime-libs Thread model: posix gcc version 4.3.2 (GCC) -- Summary: parallelization fails for MA57 Product: gcc Version: 4.3.2 Status: UNCONFIRMED Severity: normal Priority: P3 Component: fortran AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: dennis dot wassel at googlemail dot com GCC host triplet: i686-pc-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37951
