implement mtx to vbr conversion routine with given widths using a dense intermediate.
Example matrix: https://sparse.tamu.edu/HB/bcsstk14
Fitting in 2x2 grids for this matrix yields 17813 blocks. 17813 blocks correspond to 71252 values. The number of non-zero entries in the mtx format is only 32630. Therefore, the overall density of the blocks is 32630/71252 = 46%, less than 50%.
implement mtx to vbr conversion routine with given widths using a dense intermediate.
Example matrix: https://sparse.tamu.edu/HB/bcsstk14 Fitting in 2x2 grids for this matrix yields 17813 blocks. 17813 blocks correspond to 71252 values. The number of non-zero entries in the mtx format is only 32630. Therefore, the overall density of the blocks is 32630/71252 = 46%, less than 50%.