The Sun Performance Library is a library of optimized subroutines and functions for computational linear algebra and Fourier transforms. It is based on the standard libraries LAPACK, BLAS1, BLAS2, BLAS3, FFTPACK, VFFTPACK, and LINPACK generally available through Netlib.
Each subprogram in the Sun Performance Library performs the same operation and has the same interface as the standard library versions, but is generally much faster and accurate and can be used in a multiprocessing environment.
See the Sun Performance Library User’s Guide for details. (Man pages for the performance library routines are in section 3P.)