Intel(R) Math Kernel Library for Linux* OS User's Guide

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Managing Performance and Memory 6Redirecting the pointers is the only correct way to use your own set of memorymanagement functions. If you call your own memory functions without redirecting thepointers, the memory will get managed by two independent memory managementpackages, which may cause unexpected memory issues.How to Redefine Memory FunctionsTo redefine memory functions, use the following procedure:1. Include the i_malloc.h header file in your code.This header file contains all declarations required for replacing the memory allocationfunctions. The header file also describes how memory allocation can be replaced inthose Intel libraries that support this feature.2. Redefine values of pointers i_malloc, i_free, i_calloc, i_realloc prior to thefirst call to MKL functions:Example 6-4 Redefining Memory Functions#include "i_malloc.h". . .i_malloc = my_malloc;i_calloc = my_calloc;i_realloc = my_realloc;i_free = my_free;. . .// Now you may call Intel MKL functions6-19
Language-specific UsageOptions 7The Intel® Math Kernel Library (Intel® MKL) provides broad support for Fortran andC/C++ programming. However, not all function domains support both Fortran and Cinterfaces (see Table A-1 in Appendix A). For example, LAPACK has no C interface. You cancall functions comprising such domains from C using mixed-language programming.If you want to use LAPACK or BLAS, which support Fortran, in the Fortran 95 environment,additional effort may be initially required to build compiler-specific interface libraries andmodules from the source code provided with Intel MKL.This chapter focuses on mixed-language programming and the use of language-specificinterfaces. It explains the use of Intel MKL in C language environments for functiondomains that provide only Fortran interfaces, as well as explains usage of language-specificinterfaces, specifically the Fortran 95 interfaces to LAPACK and BLAS. The chapter alsodiscusses compiler-dependent functions to explain why Fortran 90 modules are supplied assources. A separate section guides you through the process of running examples to invokeIntel MKL functions from Java*.Using Language-Specific Interfaces with Intel® MKLYou can create the following interface libraries and modules using the respective makefileslocated in the interfaces directory.Table 7-1Interface Libraries and ModulesFile nameContainsLibraries, in Intel MKL architecture-specific directorieslibmkl_blas95.a 1Fortran 95 wrappers for BLAS (BLAS95) for IA-32architecture.libmkl_blas95_ilp64.a 1Fortran 95 wrappers for BLAS (BLAS95) supporting LP64interface.7-1
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Intel® Math Kernel Libraryfor Linu
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ContentsChapter 1Chapter 2Chapter 3
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ContentsOperating on Denormals.....
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1 Intel® Math Kernel Library User
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