By the late 1980s, the architecture of computers had changed. The rise of cache memory and vector processors meant that the "point-to-point" memory access patterns of EISPACK were no longer optimal. This led to the development of (Linear Algebra Package). LAPACK superseded EISPACK by:
Combining the capabilities of both EISPACK and LINPACK (for linear equations) into a single framework. Why EISPACK Still Matters
In the early 1970s, the world of scientific computing was fragmented. While the Handbook for Automatic Computation by Wilkinson and Reinsch provided high-quality Algol 60 procedures for matrix computations, there was no standardized, portable, and rigorously tested library for the more widely used Fortran language.
Reorganizing algorithms into "blocked" versions that are significantly faster on modern hardware.
