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Leopard Reference Library
The performance of Mac OS X applications and hardware devices can be measured, evaluated, and optimized using Apple's developer tools, technologies, and programming interfaces. Developers can fine-tune their applications for high performance using tools such as the Shark code-profiling application, features such as multiprocessing, and APIs such as the one for the vDSP library.

A guided introduction to improving performance in Mac OS X software.   Essential information for improving the performance of developer applications.   API references, organized by framework.
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vDSP One-Dimensional Fast Fourier Transforms Reference (HTML) (PDF)
Describes an interface for performing one-dimensional fast Fourier transforms on an input signal.
Carbon, Vector Engines Reference 2009-01-06
vDSP Reference Collection (HTML) (PDF)
Describes the vDSP programming interface defined in the Accelerate framework for digital signal processing.
Vector Engines Reference 2008-10-15
vDSP Single-Vector Operations Reference (HTML) (PDF)
This document describes the C API for performing common routines on a single vector in vDSP.
Carbon, Vector Engines Reference 2009-01-07
vDSP Two-Dimensional Fast Fourier Transforms Reference (HTML) (PDF)
Improved function discussions and corrections.
Carbon, Vector Engines Reference 2008-11-19
vDSP Vector Scalar Arithmetic Operations Reference (HTML) (PDF)
Describes vDSP functions that perform arithmetic operations combining a scalar with each element of a vector.
Carbon, Vector Engines Reference 2007-06-15
vDSP Vector-To-Scalar Operations Reference (HTML) (PDF)
Describes functions that receive a vector as input and compute scalars as output.
Carbon, Vector Engines Reference 2009-01-06
vDSP Vector-to-Vector Arithmetic Operations Reference (HTML) (PDF)
Describes functions that receive a vector as input and return a vector as output.
Carbon, Vector Engines Reference 2009-01-06
vecLib Framework Reference (HTML) (PDF)
Describes the C API for vector mathematical functions in the vecLib subframework of the Accelerate framework.
Carbon, General, Vector Engines Reference 2009-01-06
vecLib Reference Update (HTML) (PDF)
Summarizes the symbols added to the vecLib framework.
Vector Engines Release Notes 2005-06-04
VelEng FFT (HTML) (DMG) (ZIP)
G4 Velocity Engine implementation of Fast Fourier Transform (FFT) and associated convolution/correlation routines.
Audio, Carbon, Graphics & Imaging, Hardware & Drivers, Tools, Vector Engines Sample Code 2003-01-14
VelEng Multiprecision (HTML) (DMG) (ZIP)
An implementation of arbitrary precision arithmetic using the PowerPC Velocity-Engine (G4) vector instructions.
High Performance Computing, Vector Engines Sample Code 2003-01-14
VelEng Wavelet (HTML) (DMG) (ZIP)
This demonstrates a Velocity Engine (G4) implementation of wavelet processing of color images
Vector Engines Sample Code 2003-01-14
VideoViewer (HTML) (DMG) (ZIP)
Simple example of video rendering using QuickTime visual contexts, OpenGL, Core Video and Core Image.
Graphics & Imaging Sample Code 2005-08-01
vImage Alpha Compositing Reference (HTML) (PDF)
Describes the programming interface for high-performance alpha compositing operations.
Graphics & Imaging Reference 2007-07-12
vImage Conversion Reference (HTML) (PDF)
Describes the programming interface for high performance image conversion operations.
Graphics & Imaging Reference 2007-07-12
vImage Convolution Reference (HTML) (PDF)
Describes the programming interface for high performance image convolution operations.
Graphics & Imaging Reference 2007-07-12
vImage Data Types and Constants Reference (HTML) (PDF)
Describes the data types and constants used by the vImage framework.
Graphics & Imaging Reference 2007-07-12
vImage Decompression Filtering Reference (HTML) (PDF)
Describes the programming interface for decompression filtering operations.
Graphics & Imaging Reference 2007-07-12
vImage Geometry Reference (HTML) (PDF)
Describes the programming interface for high performance geometric operations on images.
Graphics & Imaging Reference 2007-07-12
vImage Histogram Reference (HTML) (PDF)
Describes the programming interface for high performance image histogram operations.
Graphics & Imaging Reference 2007-07-12
vImage Morphology Reference (HTML) (PDF)
Describes the programming interface for high performance morphological operations on images.
Graphics & Imaging Reference 2007-07-12
vImage Programming Guide (HTML) (PDF)
Explains how to use the C programming interface for high-speed vector image processing.
Graphics & Imaging Guides 2008-10-15
vImage Reference Collection (HTML) (PDF)
Describes the C programming interface for high-performance image processing.
Graphics & Imaging, Vector Engines Reference 2007-07-12
vImage Transform Reference (HTML) (PDF)
Describes the programming interface for high performance image transform operations.
Graphics & Imaging Reference 2007-07-12
Xcode Debugging Guide (HTML) (PDF)
Describes the Xcode debugging facilities and the recommended debugging techniques.
Tools Guides 2009-01-06
Xgrid Foundation Reference (HTML)
Describes the API for monitoring and controlling Xgrid cluster operations.
High Performance Computing Reference 2005-06-04
Xgrid Foundation Reference Update (HTML) (PDF)
Summarizes the symbols added to the Xgrid Foundation framework.
Darwin, Multiprocessing Release Notes 2007-07-18
Xgrid Programming Guide (HTML) (PDF)
Explains how to create client applications that use Xgrid, Apple's parallel multiprocessing technology.
High Performance Computing, Multiprocessing Guides 2007-10-31
Xgrid: High Performance Computing for the Rest of Us (HTML)
Learn how mathematicians and scientists are making the most of Xgrid's power and easy setup.
High Performance Computing Articles 2004-03-29
Xsan 2 Administrator's Guide (PDF)
Explains how to set up and manage Xsan volumes in a storage area network.
Storage Guides 2008-06-09
Xsan 2 Setup Guide (PDF)
Explains how to set up a volume on a storage area network (SAN) using Xsan 2.
Storage Guides 2008-06-09
Xsan Programming Guide (HTML) (PDF)
Describes managing files and storage pools with Xsan.
High Performance Computing, Storage Guides 2006-05-23
Xsan Reference (HTML) (PDF)
Describes the Xsan API commands.
Storage Reference 2006-05-23