Dear Libmesh developers and users, is it possible to install libmesh without MPI but with PETSc?
If yes, what is the correct way to do it? I tried to install PETSc without MPI, and then compile libmesh. I have got the following compilation error: Compiling C++ (in debug mode) src/numerics/distributed_vector.C... In file included from /home/michael/software/libmesh-no-MPI/libmesh-0.6.2/include/numerics/distributed_vector.h:42, from src/numerics/distributed_vector.C:28: /home/michael/software/libmesh-no-MPI/libmesh-0.6.2/include/utils/parallel.h:319:41: error: macro "MPI_Allgather" requires 7 arguments, but on ly 6 given /home/michael/software/libmesh-no-MPI/libmesh-0.6.2/include/utils/parallel.h:345:41: error: macro "MPI_Allgather" requires 7 arguments, but on ly 6 given /home/michael/software/libmesh-no-MPI/libmesh-0.6.2/include/utils/parallel.h:352:41: error: macro "MPI_Allgather" requires 7 arguments, but on ly 6 given /home/michael/software/libmesh-no-MPI/libmesh-0.6.2/include/utils/parallel.h: In function ‘void Parallel::allgather(T, __gnu_debug_def::vector <T, std::allocator<_CharT> >&)’: /home/michael/software/libmesh-no-MPI/libmesh-0.6.2/include/utils/parallel.h:314: error: ‘MPI_Allgather’ was not declared in this scope /home/michael/software/libmesh-no-MPI/libmesh-0.6.2/include/utils/parallel.h: In function ‘void Parallel::allgather(std::complex<_Tp>, __gnu_d ebug_def::vector<std::complex<_Tp>, std::allocator<std::complex<_Tp> > >&)’: /home/michael/software/libmesh-no-MPI/libmesh-0.6.2/include/utils/parallel.h:340: error: ‘MPI_Allgather’ was not declared in this scope src/numerics/distributed_vector.C: At global scope: src/numerics/distributed_vector.C:530: warning: unused parameter ‘pid’ src/numerics/distributed_vector.C:562: warning: unused parameter ‘pid’ /home/michael/software/libmesh-no-MPI/libmesh-0.6.2/include/utils/parallel.h: In function ‘void Parallel::sum(__gnu_debug_def::vector<T, std:: allocator<_CharT> >&) [with T = float]’: src/numerics/distributed_vector.C:497: instantiated from here /home/michael/software/libmesh-no-MPI/libmesh-0.6.2/include/utils/parallel.h:239: warning: right-hand operand of comma has no effect /home/michael/software/libmesh-no-MPI/libmesh-0.6.2/include/utils/parallel.h: In function ‘void Parallel::sum(__gnu_debug_def::vector<T, std:: allocator<_CharT> >&) [with T = double]’: src/numerics/distributed_vector.C:519: instantiated from here /home/michael/software/libmesh-no-MPI/libmesh-0.6.2/include/utils/parallel.h:239: warning: right-hand operand of comma has no effect /home/michael/software/libmesh-no-MPI/libmesh-0.6.2/include/numerics/distributed_vector.h: In member function ‘void DistributedVector<T>::init (unsigned int, unsigned int, bool) [with T = float]’: src/numerics/distributed_vector.C:593: instantiated from here /home/michael/software/libmesh-no-MPI/libmesh-0.6.2/include/numerics/distributed_vector.h:466: warning: right-hand operand of comma has no eff ect /home/michael/software/libmesh-no-MPI/libmesh-0.6.2/include/numerics/distributed_vector.h:467: warning: right-hand operand of comma has no eff ect /home/michael/software/libmesh-no-MPI/libmesh-0.6.2/include/numerics/distributed_vector.h: In member function ‘void DistributedVector<T>::init (unsigned int, unsigned int, bool) [with T = double]’: src/numerics/distributed_vector.C:594: instantiated from here /home/michael/software/libmesh-no-MPI/libmesh-0.6.2/include/numerics/distributed_vector.h:466: warning: right-hand operand of comma has no eff ect /home/michael/software/libmesh-no-MPI/libmesh-0.6.2/include/numerics/distributed_vector.h:467: warning: right-hand operand of comma has no eff ect /home/michael/software/libmesh-no-MPI/libmesh-0.6.2/include/utils/parallel.h: In function ‘void Parallel::sum(__gnu_debug_def::vector<T, std:: allocator<_CharT> >&) [with T = int]’: /home/michael/software/libmesh-no-MPI/libmesh-0.6.2/include/numerics/distributed_vector.h:473: instantiated from ‘void DistributedVector<T>: :init(unsigned int, unsigned int, bool) [with T = float]’ src/numerics/distributed_vector.C:593: instantiated from here /home/michael/software/libmesh-no-MPI/libmesh-0.6.2/include/utils/parallel.h:239: warning: right-hand operand of comma has no effect /home/michael/software/libmesh-no-MPI/libmesh-0.6.2/include/utils/parallel.h: In function ‘void Parallel::min(T&) [with T = double]’: /home/michael/software/libmesh-no-MPI/libmesh-0.6.2/include/numerics/distributed_vector.h:691: instantiated from ‘Real DistributedVector<T>: :min() const [with T = float]’ src/numerics/distributed_vector.C:593: instantiated from here /home/michael/software/libmesh-no-MPI/libmesh-0.6.2/include/utils/parallel.h:154: warning: right-hand operand of comma has no effect /home/michael/software/libmesh-no-MPI/libmesh-0.6.2/include/utils/parallel.h: In function ‘void Parallel::max(T&) [with T = double]’: /home/michael/software/libmesh-no-MPI/libmesh-0.6.2/include/numerics/distributed_vector.h:709: instantiated from ‘Real DistributedVector<T>: :max() const [with T = float]’ src/numerics/distributed_vector.C:593: instantiated from here /home/michael/software/libmesh-no-MPI/libmesh-0.6.2/include/utils/parallel.h:188: warning: right-hand operand of comma has no effect /home/michael/software/libmesh-no-MPI/libmesh-0.6.2/include/utils/parallel.h: In function ‘void Parallel::sum(T&) [with T = double]’: src/numerics/distributed_vector.C:48: instantiated from ‘T DistributedVector<T>::sum() const [with T = float]’ src/numerics/distributed_vector.C:593: instantiated from here /home/michael/software/libmesh-no-MPI/libmesh-0.6.2/include/utils/parallel.h:222: warning: right-hand operand of comma has no effect make: *** [src/numerics/distributed_vector.x86_64-unknown-linux-gnu.dbg.o] Error 1 Thank you, Michael. ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world 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