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Re: [petsc-maint] Bug#897006: petsc FTBFS on mips: f951: out of memory

On Sat, Apr 28, 2018 at 08:29:48AM -0500, Satish Balay wrote:
> Also we print a summary of compile flags up in the log:
> Using Fortran compile: mpif90 -c -g -O2 -fstack-protector-strong -fPIC   -Wdate-time -D_FORTIFY_SOURCE=2 -fdebug-prefix-map=/<<BUILDDIR>>/petsc-3.9.0+dfsg1=. -I/<<BUILDDIR>>/petsc-3.9.0+dfsg1/include -I/<<BUILDDIR>>/petsc-3.9.0+dfsg1/mips-linux-gnu-real-debug/include -I/usr/include/suitesparse -I/usr/include/superlu -I/usr/include/superlu-dist -I/usr/include/hypre -I/usr/include/hdf5/openmpi -I/usr/include/scotch  -Wdate-time -D_FORTIFY_SOURCE=2   

The failing command is:
mpif90 -c -g -O2 -fstack-protector-strong -fPIC   -Wdate-time -D_FORTIFY_SOURCE=2 -fdebug-prefix-map=/home/bunk/build/petsc-3.9.0+dfsg1=. -I/home/bunk/build/petsc-3.9.0+dfsg1/include -I/home/bunk/build/petsc-3.9.0+dfsg1/mips-linux-gnu-real-debug/include -I/usr/include/suitesparse -I/usr/include/superlu -I/usr/include/superlu-dist -I/usr/include/hypre -I/usr/include/hdf5/serial -I/usr/include/scotch  -Wdate-time -D_FORTIFY_SOURCE=2  -MMD -MP /home/bunk/build/petsc-3.9.0+dfsg1/src/dm/f90-mod/petscdmmod.F -o mips-linux-gnu-real-debug/obj/dm/f90-mod/petscdmmod.o -J/home/bunk/build/petsc-3.9.0+dfsg1/mips-linux-gnu-real-debug/include

I am hitting the 2 GB limit even after changing to -g0 -O0.

> Also - current build is with:
> Using MAKEFLAGS: -j4 -l4 w -j4 -Oline --jobserver-auth=3,4 -- PETSC_DIR=/<<BUILDDIR>>/petsc-3.9.0+dfsg1 PETSC_ARCH=mips-linux-gnu-real-debug CFLAGS=-fdebug-prefix-map=/<<BUILDDIR>>/petsc-3.9.0+dfsg1=. CXXFLAGS=-fdebug-prefix-map=/<<BUILDDIR>>/petsc-3.9.0+dfsg1=. FCFLAGS=-fdebug-prefix-map=/<<BUILDDIR>>/petsc-3.9.0+dfsg1=. FFLAGS=-fdebug-prefix-map=/<<BUILDDIR>>/petsc-3.9.0+dfsg1=.
> If '-j1' is used - memory usage will go down a bit. [but might not be sufficient to clear the 2 GB limit]

This won't make a difference.

Overall memory usage is not a problem here, the machines do have 8 GB RAM.

> Satish



       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

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