Compiler optimization techniques

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There are several techniques for optimizing compilers.

The three main areas of source-code tuning are as follows:

  • Programming techniques that take advantage of the optimizing compilers and the system architecture.
  • BLAS, a library of Basic Linear Algebra Subroutines. If you have a numerically intensive program, these subroutines can provide considerable performance enhancement. An extension of BLAS is ESSL, the Engineering Scientific Subroutine Library. In addition to a subset of the BLAS library, ESSL includes other high-performance mathematical routines for chemistry, engineering, and physics. A Parallel ESSL (PESSL) exists for SMP machines.
  • Compiler options and the use of preprocessors like KAP and VAST, available from third-party vendors.

In addition to these source-code tuning techniques, the fdpr program restructures object code. The fdpr program is described in Restructuring executable programs with the fdpr program.