On Wed, 27 Jul 2022, Satish Balay via petsc-dev wrote: > Maybe should try without hwloc...
So this helps! i.e build with: $ ./configure --with-debugging=0 --download-mpich --with-hwloc=0 && make >>> balay@p1 /home/balay/petsc/src/ksp/ksp/tests (main =) $ sleep 30; time ./ex39; time ./ex39 real 0m0.029s user 0m0.020s sys 0m0.009s real 0m0.027s user 0m0.018s sys 0m0.008s <<<< Satish
