The performance of petsc_3.3p2  is five times faster than petsc_dev-r24197. Why? <br><br>It is tested with pflotran example problem 100x100x100.<br>config parameter£º--with-mpi=0 --CC=gcc --FC=gfortran --CCFLAGS="-g -O2"  --FCFLAGS="-g -O2" --blas-lapack-dir=$MKLROOT<br>
<br>detail time:<br>                      petsc_3.3p2          petsc_dev24197<br>walltime(sec)        28.116                 110.25<br><br>Thank you!<br>