<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:times new roman, new york, times, serif;font-size:12pt"><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;">I am sorry. This is the error message:<br><br>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<br>g++: unrecognized option '-PIC'<br>gmres.c: In function ��PetscErrorCode KSPSolve_GMRES(_p_KSP*)��:<br>gmres.c:259: error: invalid use of undefined type ��struct _p_PC��<br>/home/software/petsc-2.3.1-p10/include/petscpc.h:27: error: forward declaration of ��struct _p_PC��<br>make[1]:
[/home/software/petsc-2.3.1-p10/lib/linux-gnu-cxx-complex-debug/libpetscksp.a(gmres.o)] Error 1 (ignored)<br>/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<br>make[1]: [/home/software/petsc-2.3.1-p10/lib/linux-gnu-cxx-complex-debug/libpetscksp.a(gmres.o)] Error 1 (ignored)<br>if test -n ""; then /usr/bin/ar cr gmres.lo; fi<br>/bin/rm -f gmres.o gmres.lo<br><br>It said that the struct _p_PC was undefined. But it seems impossible. I dont know where is wrong?<br><br>Thanks!<br><br><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;">----- ԭʼ�ʼ� ----<br>�����ˣ� Barry Smith <bsmith@mcs.anl.gov><br>�ռ��ˣ� petsc-users@mcs.anl.gov<br>�ѷ��ͣ� 2007/1/28(����), ����12:43:28<br>���⣺ Re: �ظ��� about combining the GMRES and smooth methods<br><br><div><br> If you want help with why a compile fails you
need to at least<br>send the entire output when the compile fails.<br><br> Barry<br><br><br>On Sun, 28 Jan 2007, jiaxun hou wrote:<br><br>> 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?<br> Thanks!<br>-------------------------------------------------------------<br><br><br>----- ԭʼ�ʼ� ----<br>�����ˣ� Barry Smith <bsmith@mcs.anl.gov><br>�ռ��ˣ� petsc-users@mcs.anl.gov<br>�ѷ��ͣ� 2007/1/28(����), ����11:28:35<br>���⣺ Re: about combining the GMRES and smooth methods<br><br><br>It seems extremely likely that you do not want to do this.<br><br> If you want to use SOR or SSOR as a preconditioner for GMRES simply<br>use -pc_type sor; see the manual page for PCSOR for other options.<br><br> Barry<br><br><br>On Sun, 28 Jan 2007, jiaxun hou wrote:<br><br>> Hi, <br>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:<br><br>PetscErrorCode KSPSolve_GMRES(KSP ksp) {<br>.....<br> ierr = GMREScycle(&its,ksp);CHKERRQ(ierr);<br> <br> ierr = MatRelax(ksp->pc->mat, ksp->vec_rhs,1,SOR_FORWARD_SWEEP,0,1,1,ksp->vec_sol);CHKERRQ(ierr);<br>.....<br>}<br><br>But compile fail. Is it the right way? <br>Thanks.<br><br><br> <br>___________________________________________________________ <br>�Ż��������-3.5G������20M���� <br><a target="_blank" href="http://cn.mail.yahoo.com/">http://cn.mail.yahoo.com/</a><br><br><br> <br>___________________________________________________________ <br>��ע�Ż��������-3.5G������20M������ <br><a target="_blank"
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