How To Get Performance From Commodity Processors?
Today’s processors can achieve high-performance, but this requires extensive machine-specific hand tuning.
Hardware and software have a large design space w/many parameters
- Blocking sizes, loop nesting permutations, loop unrolling depths, software pipelining strategies, register allocations, and instruction schedules.
- Complicated interactions with the increasingly sophisticated micro-architectures of new microprocessors.
About a year ago no tuned BLAS for Pentium for Linux.
Need for quick/dynamic deployment of optimized routines.
ATLAS - Automatic Tuned Linear Algebra Software
- PhiPac from Berkeley
- FFTW from MIT (http://www.fftw.org)