[petsc-dev] Petsc-3.7.7-Parallel-Testing

[Gürcan Serttaş]

Hello Sir/Madam,


We tried to run the tutorial steps following site.

*https://www.mcs.anl.gov/petsc/documentation/tutorials/HandsOnExercise.html*

  * Compile src/ksp/ksp/examples/tutorial/ex11.c

       cd /petsc-3.7.7/src/ksp/ksp/examples/tutorial/ex11.c
       make ex11
   

  * Run simple advection through a tiny hybrid mesh
  *

    We are new to the petsc and  when we ran the ex11 input we got a
    screen output like one below

        ~/petsc-3.7.7/openmpi-gnu-O3/bin/mpiexec  -n 1 ./ex11 -f ${PETSC_DIR}/share/petsc/datafiles/meshes/sevenside.exo

       $ Norm of error 0.00133762 iterations 26

  * When we increase the number of core the result did not change.

	$ ~/petsc-3.7.7/openmpi-gnu-O3/bin/mpiexec  -n 4 ./ex11 -f ${PETSC_DIR}/share/petsc/datafiles/meshes/sevenside.exo
	$ Norm of error 0.00133762 iterations 26

*    But the expected value is :*

   0  time        0  |x|    7.155
   1  time   0.7211  |x|    4.386
   2  time    1.442  |x|    1.968
   3  time    2.163  |x|    1.925
CONVERGED_TIME at time 2.16333 after 3 steps

**

Moreover, we got the similar output in the other examples and did not 
see any running time .

Could you please help in this issue ?

Kind Regards.
-- 
*Gürcan Serttaş*
System Engineer
E-mail: gurcan.serttas at eduline.com.tr
Mobile: +90 541 350 40 72
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