Re: [boost] [ublas] Weakness in large sparse matrices

On Sat, 8 Feb 2003, Joerg Walter wrote: > Hi Johan, > [...] > On 32-bit systems the upper dimensions for sparse_matrix are 65535 x 65535 > due to the internal mapping of (i, j) -> (i * size2+j) (or (i + j * size1). > I've added a corresponding check to the debug version. > > For larger dimension

[boost] [ublas] Weakness in large sparse matrices

Hi, I've done some testing of matrix representations to decide what we're going to use for a project, and I get strange results with uBLAS. What we need is efficient memory usage, fast large sparse matrix assembly (insertion speed) and fast large sparse matrix-vector multiply. Large here means on