Hi Wolfgang, Now I used the command you mentioned to check whether UMFPACK is enabled and it shows like this: # ( DEAL_II_WITH_HDF5 = OFF ) # ( DEAL_II_WITH_LAPACK = OFF ) # ( DEAL_II_WITH_METIS = OFF ) # ( DEAL_II_WITH_MPI = OFF ) # DEAL_II_WITH_MUPARSER set up with bundled packages # ( DEAL_II_WITH_NANOFLANN = OFF ) # ( DEAL_II_WITH_NETCDF = OFF ) # ( DEAL_II_WITH_OPENCASCADE = OFF ) # ( DEAL_II_WITH_P4EST = OFF ) # ( DEAL_II_WITH_PETSC = OFF ) # ( DEAL_II_WITH_SLEPC = OFF ) # ( DEAL_II_WITH_SUNDIALS = OFF ) # DEAL_II_WITH_THREADS set up with bundled packages # ( DEAL_II_WITH_TRILINOS = OFF ) # ( DEAL_II_WITH_UMFPACK = OFF )
So UMFPACK is not installed, right? But what to do next? How can I know whether my Ubuntu OS already installed the lapack and blas package? (I tried to search lapack library under /usr/lib and it showed that there is only a FindLAPACK.cmake file whose name contains lapack, no files such as liblapack is found. I also found a folder named Lapack under /usr/include/CGAL which contains a file named Linear_algebra_lapack.h, and a LAPACK.h under the path /usr/include/CGAL/auto_link The above is all I can find but seems no lib like liblapack exits) I can intall lapack and blas myself, but I don't know how to compile and install UMFPACK. I think I have found the source files which are needed under /home/dyfluid/dealii/bundled/umfpack/UMFPACK . > > As a general rule, there is no need to compile deal.II and then try to run > any > programs with it if you want to find out whether your UMFPACK will work or > not. All you need to do is to run the > cmake .... > command you run to configure deal.II. At the end, it prints out a summary > that > shows what packages it found. if UMFPACK is not listed as ON, then > compiling > deal.II to test it is not necessary -- UMFPACK has not been enabled. > > Now, if you do find that UMFPACK has not been enabled, even though you > specificed > -DDEAL_II_WITH_UMFPACK=ON > then you need to go higher up in the cmake output to find what precisely > it > was that cmake couldn't figure out. The usual cause is that UMFPACK > requires > BLAS and LAPACK, and if your system does not have these libraries > available, > or has them in places where cmake can't find them, then UMFPACK can not be > enabled. > > What it is in your case that doesn't work, I don't know of course. But you > can > find out by looking through the cmake output. > > Best > W. > > -- > ------------------------------------------------------------------------ > Wolfgang Bangerth email: bang...@colostate.edu > <javascript:> > www: http://www.math.colostate.edu/~bangerth/ > > -- The deal.II project is located at http://www.dealii.org/ For mailing list/forum options, see https://groups.google.com/d/forum/dealii?hl=en --- You received this message because you are subscribed to the Google Groups "deal.II User Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to dealii+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
