So, What should I do to use the correct mpiexec? Am I configure petsc with the wrong way or something should be done?
Stefano Zampini <[email protected]> 於 2020年2月26日 週三 下午4:26寫道： > This is what I get > > [szampini@localhost tutorials]$ mpiexec -n 2 ./ex2 -ksp_monitor_short -m > 5 -n 5 -ksp_gmres_cgs_refinement_type refine_always > 0 KSP Residual norm 2.73499 > 1 KSP Residual norm 0.795482 > 2 KSP Residual norm 0.261984 > 3 KSP Residual norm 0.0752998 > 4 KSP Residual norm 0.0230031 > 5 KSP Residual norm 0.00521255 > 6 KSP Residual norm 0.00145783 > 7 KSP Residual norm 0.000277319 > Norm of error 0.000292349 iterations 7 > > When I sequentially, I get (same output as yours) > > [szampini@localhost tutorials]$ mpiexec -n 1 ./ex2 -ksp_monitor_short -m > 5 -n 5 -ksp_gmres_cgs_refinement_type refine_always > 0 KSP Residual norm 3.21109 > 1 KSP Residual norm 0.93268 > 2 KSP Residual norm 0.103515 > 3 KSP Residual norm 0.00787798 > 4 KSP Residual norm 0.000387275 > Norm of error 0.000392701 iterations 4 > > This means you are using the wrong mpiexec > > Il giorno mer 26 feb 2020 alle ore 11:17 Tsung-Hsing Chen < > [email protected]> ha scritto: > >> Hi, >> >> I tried to run the example in ksp/examples/tutorials/ex2. >> I run the code with : mpiexec -n 2 ./ex2 -ksp_monitor_short -m 5 -n 5 >> -ksp_gmres_cgs_refinement_type refine_always >> >> the output is : >> 0 KSP Residual norm 3.21109 >> 1 KSP Residual norm 0.93268 >> 2 KSP Residual norm 0.103515 >> 3 KSP Residual norm 0.00787798 >> 4 KSP Residual norm 0.000387275 >> Norm of error 0.000392701 iterations 4 >> 0 KSP Residual norm 3.21109 >> 1 KSP Residual norm 0.93268 >> 2 KSP Residual norm 0.103515 >> 3 KSP Residual norm 0.00787798 >> 4 KSP Residual norm 0.000387275 >> Norm of error 0.000392701 iterations 4 >> >> My output(above) is twice as the ksp/examples/tutorials/output/ex2_4.out. >> Is this the right answer that should come out? >> >> Thanks in advance, >> >> Tsung-Hsing Chen >> > > > -- > Stefano >
