[petsc-users] about BDDC preconditioner

[Zhenglun (Alan) Wei]

Dear All,
I hope you're having a nice day.
I'm trying to use BDDC as a preconditioner. The executable command is:
/mpiexec -np 8 ./ex45 -pc_type bddc -ksp_type cg -ksp_rtol 1.0e-7
-log_summary//
///However, it say:
/[//0]PETSC ERROR: --------------------- Error Message
------------------------------------//
//[0]PETSC ERROR: Unknown type. Check for miss-spelling or missing
external package needed for type://
//see
http://www.mcs.anl.gov/petsc/documentation/installation.html#external!//
//[0]PETSC ERROR: Unable to find requested PC type bddc!//
//[0]PETSC ERROR:
------------------------------------------------------------------------//
//[0]PETSC ERROR: Petsc Development GIT revision:
05acd661167488e2bf402ce2590acc1e0469ea17 GIT Date: 2013-04-15 22:45:57
-0500//
//[0]PETSC ERROR: See docs/changes/index.html for recent updates.//
//[0]PETSC ERROR: See docs/faq.html for hints about trouble shooting.//
//[0]PETSC ERROR: See docs/index.html for manual pages.//
//[0]PETSC ERROR:
------------------------------------------------------------------------//
//[0]PETSC ERROR: ./ex45 on a linux-gnu-c-nodebug named m005 by zlwei
Wed Jun 12 14:39:42 2013//
//[0]PETSC ERROR: Libraries linked from
/bio/work1/zlwei/PETSc/petsc-dev/linux-gnu-c-nodebug/lib//
//[0]PETSC ERROR: Configure run at Tue Apr 16 11:59:49 2013//
//[0]PETSC ERROR: Configure options --download-f-blas-lapack
--download-hypre --download-mpich --with-cc=gcc --with-debugging=no
--with-fc=gfortran PETSC_ARCH=linux-gnu-c-nodebug//
//[0]PETSC ERROR:
------------------------------------------------------------------------//
//[0]PETSC ERROR: PCSetType() line 68 in
/bio/work1/zlwei/PETSc/petsc-dev/src/ksp/pc/interface/pcset.c//
//[0]PETSC ERROR: PCSetFromOptions() line 163 in
/bio/work1/zlwei/PETSc/petsc-dev/src/ksp/pc/interface/pcset.c//
//[0]PETSC ERROR: KSPSetFromOptions() line 357 in
/bio/work1/zlwei/PETSc/petsc-dev/src/ksp/ksp/interface/itcl.c//
//[0]PETSC ERROR: main() line 135 in src/ksp/ksp/examples/tutorials/ex45.c//
//application called MPI_Abort(MPI_COMM_WORLD, 86) - process 0//
//[cli_0]: aborting job://
//application called MPI_Abort(MPI_COMM_WORLD, 86) - process 0/
What should I do for this?

thanks,
Alan
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