------- Comment #6 from longb at cray dot com 2007-09-12 21:05 ------- Subject: Re: GFORTRAN OPTIMIZATION ERROR ABOVE -O0 FOR MPICH2 TEST F90_RMA/BASEATTRWINF90.F90
sgk at troutmask dot apl dot washington dot edu wrote: > ------- Comment #5 from sgk at troutmask dot apl dot washington dot edu > 2007-09-10 18:28 ------- > Subject: Re: GFORTRAN OPTIMIZATION ERROR ABOVE -O0 FOR MPICH2 TEST > F90_RMA/BASEATTRWINF90.F90 > > On Mon, Sep 10, 2007 at 04:03:21PM -0000, longb at cray dot com wrote: > >> gcc version 4.2.1 20070719 (rpm:3) >> >> Note: The version of gcc we are using is not the same as the one you >> noted, and for the XT systems all linking is static. >> > > I checked my version again, and it was 4.2.1 20070523. There > aren't many significant changes between this version and yours > to at least the Fortran front-end. I just rebuild 4.2.2 (note > it's been marked for a release) and get > > GNU F95 version 4.2.2 20070905 (prerelease) (x86_64-portbld-freebsd7.0) > > Your program with my addition and static linking gives > > node10:kargl[254] ../mpich2/bin/mpiexec -machinefile mf1 -n 1 ./long > Got right value for WIN_DISP_UNIT ( 4 , should be 4 ) > node10:kargl[255] ./long > Got right value for WIN_DISP_UNIT ( 4 , should be 4 ) > > >> Our version of mpich2 appears to be older. I can ask the MPI group for >> a newer version. >> > > The mpich2 changelog suggests that there may be some changes which > effect gfortran+mpich2. > I had our MPI guy run the test with a virgin mpich2 build and he also finds no error. This appears to be a bug in the version of the mpich2 library we have on our system. I've reassigned the bug to them. Please close the bug against gfortran. Cheers, Bil > > -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33339