Thanks. So I have to build libmesh with PETSc? > On Jun 21, 2016, at 1:35 PM, John Peterson <jwpeter...@gmail.com> wrote: > > > > On Tue, Jun 21, 2016 at 12:28 PM, 张江 <zhangjiang.d...@gmail.com > <mailto:zhangjiang.d...@gmail.com>> wrote: > Hi, > > I am using parallel environment to read an unstructured grid data so that > each process is assigned one part of data. > But there is an error when running the program (mpiexec -n 2 ./out) at the > following codes: > > eqsys = new EquationSystems(*mesh); > > asys = &(eqsys->add_system<System>("Velocity")); > Ax_var = asys->add_variable("Vx", FIRST, LAGRANGE); > Ay_var = asys->add_variable("Vy", FIRST, LAGRANGE); > Az_var = asys->add_variable("Vz", FIRST, LAGRANGE); > > eqsys->init(); > > > The error is: > > Error: EigenError: EigenSparseVectors can onSparseVectors can only be usely > be used in serial!d in serial! > > [1[0] ./inclu] ./include/libmesh/de/libmesh/eigen_spareigen_sparse_vector.h, > line se_vector.h, line 506, compiled Jun 11 2016 at 16:06:07 > 506, compiled Jun 11 2016 at 16:06:07 > application called MPI_Abort(MPI_COMM_WORLD, 1) - process 0 > application called MPI_Abort(MPI_COMM_WORLD, 1) - process 1 > > It seems that the error occurs at eqsys->init(). Is there any wrong operation > here? Thanks. > > You are attempting to run in parallel, but don't have a parallel > SolverPackage (like PETSc) available for the NumericVector classes. > > -- > John
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