[petsc-dev] Seeking OLCF users complaining about poor build times

[Victor Eijkhout]

> On Feb 26, 2015, at 3:52 PM, Satish Balay <balay at mcs.anl.gov> wrote:
> 
> --------------
> Laptop build: MAKE_NP = 4
> --------------
> $ time ./configure --download-hypre --download-metis --download-parmetis --download-superlu_dist --download-fblaslapack --with-debugging=0 --with-c2html=0 PETSC_ARCH=arch-test COPTFLAGS="-O3 -fast" FOPTFLAGS="-O3 -fast" CXXOPTFLAGS="-O3 -fast"
> <snip>
> real    3m56.755s
> user    2m47.458s
> sys     0m57.206s

3 minutes !? Wow.

real    15m19.935s
user    8m46.586s
sys     3m8.955s

I think unpacking those big tar balls is bad on lustre.


> $ time    make PETSC_DIR=/home/balay/petsc PETSC_ARCH=arch-test all
> <snip>
> real    1m13.519s
> user    3m40.708s
> sys     0m47.002s

=========================================
gmake[1]: Leaving directory `/work/00434/eijkhout/petsctest/petsc-3.5.3'
Now to check if the libraries are working do:
make PETSC_DIR=/work/00434/eijkhout/petsctest/petsc-3.5.3 PETSC_ARCH=arch-test test
=========================================

real    1m13.661s
user    5m47.502s
sys     1m44.092s