[Boost-users] Odd uBLAS limitation

G'day all. Looks like the uBLAS questions are going here, since we can't post to the proper list. So might as well ask here. I'm on a 32-bit platform, and I can't create a sparse matrix of dimensions 65536*65536. I get a run-time assertion failure, because uBLAS requires that for an m by n matrix, m*n fits in a machine word. For a dense matrix, that's an understandable limitation, but for a sparse matrix it's impractically small. I'm trying to use uBLAS to solve finite element Poisson problems with odd boundary conditions, which involves solving a ver sparse linear system with the grid points as unknowns. This limitation means I can't use anything larger than a 40*40*40 voxel grid. Any thoughts? Cheers, Andrew Bromage