Hi, After make test, I got the following output. I want to make sure if the installation is correct. Thanks. Yixun command: /petsc-3.1-p6> make PETSC_DIR=/yliu/MyVC/petsc-3.1-p6 PETSC_ARCH=linux-gnu-c-debug test ******************************************output**************************************************************** Running test examples to verify correct installation C/C++ example src/snes/examples/tutorials/ex19 run successfully with 1 MPI process C/C++ example src/snes/examples/tutorials/ex19 run successfully with 2 MPI processes --------------Error detected during compile or link!----------------------- See http://www.mcs.anl.gov/petsc/petsc-2/documentation/troubleshooting.html /yliu/MPICH2/bin/mpif90 -c -Wall -Wno-unused-variable -g -I/yliu/MyVC/petsc-3.1-p6/linux-gnu-c-debug/include -I/yliu/MyVC/petsc-3.1-p6/include -I/yliu/MyVC/petsc-3.1-p6/linux-gnu-c-debug/include -I/yliu/MPICH2/include -I/yliu/MyVC/petsc-3.1-p6/linux-gnu-c-debug/include -I/yliu/MyVC/petsc-3.1-p6/linux-gnu-c-debug/include -I/yliu/MPICH2/include -o ex5f.o ex5f.F ex5f.F:92.72: call PetscOptionsGetReal(PETSC_NULL_CHARACTER,'-par',lambda, 1 Warning: Line truncated at (1) ex5f.F:113.72: call DACreate2d(PETSC_COMM_WORLD,DA_NONPERIODIC,DA_STENCIL_STAR, 1 Warning: Line truncated at (1) ex5f.F:114.72: & i4,i4,PETSC_DECIDE,PETSC_DECIDE,i1,i1,PETSC_NULL_INTEGER, 1 Warning: Line truncated at (1) ex5f.F:125.72: call DAGetInfo(da,PETSC_NULL_INTEGER,mx,my,PETSC_NULL_INTEGER, 1 Warning: Line truncated at (1) ex5f.F:126.72: & PETSC_NULL_INTEGER,PETSC_NULL_INTEGER, 1 Warning: Line truncated at (1) ex5f.F:127.72: & PETSC_NULL_INTEGER,PETSC_NULL_INTEGER, 1 Warning: Line truncated at (1) ex5f.F:128.72: & PETSC_NULL_INTEGER,PETSC_NULL_INTEGER, 1 Warning: Line truncated at (1) ex5f.F:130.72: call DAGetCorners(da,xs,ys,PETSC_NULL_INTEGER,xm,ym, 1 Warning: Line truncated at (1) ex5f.F:132.72: call DAGetGhostCorners(da,gxs,gys,PETSC_NULL_INTEGER,gxm,gym, 1 Warning: Line truncated at (1) ex5f.F:188.72: call SNESSetJacobian(snes,A,J,SNESDAComputeJacobian, 1 Warning: Line truncated at (1) ex5f.F:344.72: if (i .eq. 1 .or. j .eq. 1 1 Warning: Line truncated at (1) ex5f.F:348.72: x(i,j) = temp1 * 1 Warning: Line truncated at (1) ex5f.F:412.72: if (i .eq. 1 .or. j .eq. 1 1 Warning: Line truncated at (1) ex5f.F:417.72: uxx = hydhx * (two*u 1 Warning: Line truncated at (1) ex5f.F:517.72: if (i .eq. 1 .or. j .eq. 1 1 Warning: Line truncated at (1) ex5f.F:522.72: call MatSetValuesLocal(jac,i1,row,i1,col,v, 1 Warning: Line truncated at (1) ex5f.F:528.72: v(3) = two*(hydhx + hxdhy) 1 Warning: Line truncated at (1) ex5f.F:537.72: call MatSetValuesLocal(jac,i1,row,i5,col,v, 1 Warning: Line truncated at (1) /yliu/MPICH2/bin/mpif90 -Wall -Wno-unused-variable -g -o ex5f ex5f.o -Wl,-rpath,/yliu/MyVC/petsc-3.1-p6/linux-gnu-c-debug/lib -L/yliu/MyVC/petsc-3.1-p6/linux-gnu-c-debug/lib -lpetsc -lX11 -Wl,-rpath,/yliu/MyVC/petsc-3.1-p6/linux-gnu-c-debug/lib -L/yliu/MyVC/petsc-3.1-p6/linux-gnu-c-debug/lib -lparmetis -lmetis -lflapack -lfblas -lm -L/yliu/MPICH2/lib -L/usr/lib64/gcc/x86_64-suse-linux/4.5 -L/usr/x86_64-suse-linux/lib -ldl -lmpich -lopa -lmpl -lrt -lpthread -lgcc_s -lmpichf90 -lgfortran -lm -lm -ldl -lmpich -lopa -lmpl -lrt -lpthread -lgcc_s -ldl /bin/rm -f ex5f.o Fortran example src/snes/examples/tutorials/ex5f run successfully with 1 MPI process Completed test examples **************************************************************************************************************************