I am sorry. This is the error message:
g++ -c -Wall -Wshadow -Wwrite-strings -fomit-frame-pointer -Wno-strict-aliasing
-g3 -PIC -I/home/software/petsc-2.3.1-p10
-I/home/software/petsc-2.3.1-p10/bmake/linux-gnu-cxx-complex-debug
-I/home/software/petsc-2.3.1-p10/include -I/home/software/mpich2/include
-D__SDIR__='"src/ksp/ksp/impls/gmres/"' gmres.c
g++: unrecognized option '-PIC'
gmres.c: In function ?PetscErrorCode KSPSolve_GMRES(_p_KSP*)?:
gmres.c:259: error: invalid use of undefined type ?struct _p_PC?
/home/software/petsc-2.3.1-p10/include/petscpc.h:27: error: forward declaration
of ?struct _p_PC?
make[1]:
[/home/software/petsc-2.3.1-p10/lib/linux-gnu-cxx-complex-debug/libpetscksp.a(gmres.o)]
Error 1 (ignored)
/usr/bin/ar cr
/home/software/petsc-2.3.1-p10/lib/linux-gnu-cxx-complex-debug/libpetscksp.a
gmres.o/usr/bin/ar: gmres.o: No such file or directory
make[1]:
[/home/software/petsc-2.3.1-p10/lib/linux-gnu-cxx-complex-debug/libpetscksp.a(gmres.o)]
Error 1 (ignored)
if test -n ""; then /usr/bin/ar cr gmres.lo; fi
/bin/rm -f gmres.o gmres.lo
It said that the struct _p_PC was undefined. But it seems impossible. I dont
know where is wrong?
Thanks!
----- ???? ----
???? Barry Smith <bsmith at mcs.anl.gov>
???? petsc-users at mcs.anl.gov
???? 2007/1/28(??), ??12:43:28
??? Re: ??? about combining the GMRES and smooth methods
If you want help with why a compile fails you need to at least
send the entire output when the compile fails.
Barry
On Sun, 28 Jan 2007, jiaxun hou wrote:
> But I already had another preconditioner. I want to study the behave of the
> smooth method in the GMRES with my preconditioner. How can I do?
Thanks!
-------------------------------------------------------------
----- ???? ----
???? Barry Smith <bsmith at mcs.anl.gov>
???? petsc-users at mcs.anl.gov
???? 2007/1/28(??), ??11:28:35
??? Re: about combining the GMRES and smooth methods
It seems extremely likely that you do not want to do this.
If you want to use SOR or SSOR as a preconditioner for GMRES simply
use -pc_type sor; see the manual page for PCSOR for other options.
Barry
On Sun, 28 Jan 2007, jiaxun hou wrote:
> Hi,
I want to add a smooth method in the GMRES routine. I do it in the function
KSPSolve_GMRES of /src/ksp/ksp/impls/gmres/gmres.c. The code likes that:
PetscErrorCode KSPSolve_GMRES(KSP ksp) {
.....
ierr = GMREScycle(&its,ksp);CHKERRQ(ierr);
ierr = MatRelax(ksp->pc->mat,
ksp->vec_rhs,1,SOR_FORWARD_SWEEP,0,1,1,ksp->vec_sol);CHKERRQ(ierr);
.....
}
But compile fail. Is it the right way?
Thanks.
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