Hi everyone, I am trying to debug this strange behavior. I am trying to build a PETSC sparse parallel matrix using 4 processors. This gives me 32 local number of rows (so 128 global number of rows). But when I pass the local_num_of_rows variable into the reinit function, this is the PETSC error I get:
PETSC ERROR: Nonconforming object sizes PETSC ERROR: Sum of local lengths 512 does not equal global length 128, my local length 128 Here is my reinit function and necessary vectors: std::vector<size_type> local_rows_per_process(num_procs,local_num_rows); std::vector<size_type> local_columns_per_process(num_procs,number_of_columns); spm.reinit(MPI_COMM_WORLD, dsp, local_rows_per_process, local_columns_per_process, my_proc); The number of local rows for this example is local_num_rows=32, I printed to check. Though when it is passed into the reinit function, it looks like it is using the global number of rows. I get the same error from the constructor that doesn’t use the dynamic sparsity pattern: spm.reinit(MPI_COMM_WORLD,global_row_size,global_column_size,local_row_size,local_column_size,number_of_non_zeros); Just for clarifying this constructor, what is “local_rows” and “local_columns” for this constructor? The documentation just says see the class documentation. I see where the 4th constructor uses “local_rows_per_process” and this means how many rows do all other processors own and same for the columns so I thought I had that figured out for my constructor with the dynamic sparsity pattern but maybe not. For this constructor, I just used the local number of rows and columns. Can someone please show me what they would do to debug this situation? Thank you, Zachary -- 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. To view this discussion on the web visit https://groups.google.com/d/msgid/dealii/E60642F6-E3A0-465E-AAFA-4B3A184F974D%40gmail.com.
