Intel® 64 and IA-32 Architectures Optimization Reference Manual

APPLICATION PERFORMANCE TOOLSlibrary include linear algebra consisting of LAPACK and BLAS, Discrete FourierTransforms (DFT), vector transcendental functions (vector math library/VML) andvector statistical functions (VSL). Intel MKL is optimized for the latest featuresand capabilities of the Intel Pentium 4 processor, Pentium M processor, Intel Xeonprocessors and Intel ® Itanium ® 2 processors.• Intel ® Integrated Performance Primitives for Linux* and Windows*: IPP is across-platform software library which provides a range of library functions forvideo decode/encode, audio decode/encode, image color conversion, computervision, data compression, string processing, signal processing, image processing,JPEG decode/encode, speech recognition, speech decode/encode, cryptographyplus math support routines for such processing capabilities.Intel IPP is optimized for the broad range of Intel microprocessors: Intel Core 2processor family, Dual-core Intel Xeon processors, Intel Pentium 4 processor,Pentium M processor, Intel Xeon processors, the Intel Itanium architecture,Intel ® SA-1110 and Intel ® PCA application processors based on the IntelXScale ® microarchitecture. With a single API across the range of platforms, theusers can have platform compatibility and reduced cost of development.A.3.1Benefits SummaryThe overall benefits the libraries provide to the application developers are as follows:• Time-to-Market — Low-level building block functions that support rapidapplication development, improving time to market.• Performance — Highly-optimized routines with a C interface that giveAssembly-level performance in a C/C++ development environment (MKL alsosupports a Fortran interface).• Platform tuned — Processor-specific optimizations that yield the bestperformance for each Intel processor.• Compatibility — Processor-specific optimizations with a single applicationprogramming interface (API) to reduce development costs while providingoptimum performance.• Threaded application support — Applications can be threaded with theassurance that the MKL and IPP functions are safe for use in a threadedenvironment.A.3.2Optimizations with the Intel ® Performance LibrariesThe Intel Performance Libraries implement a number of optimizations that arediscussed throughout this manual. Examples include architecture-specific tuningsuch as loop unrolling, instruction pairing and scheduling; and memory managementwith explicit and implicit data prefetching and cache tuning.A-13