XL Fortran Advanced Edition for Linux

At a glance - What's new for V11.1
XL Fortran Advanced Edition for Linux V11.1 introduces the following new enhancements:

• Supports Red Hat Enterprise Linux AS 5 (RHEL5) for IBM POWER and SUSE Linux Enterprise Server 10 Service Pack 1 (SLES10 SP1) for IBM POWER

• Improved support for Fortran 2003, including new xlf2003 and f2003 compiler invocation commands, recognition of .f03 and .F03 filename extensions, and enhanced compliance with the Fortran 2003 standard

• Support for the latest POWER6 processors, including new object code tuning options, directives, and intrinsic functions

• New -qtune=balanced default setting instructs the compiler to tune generated code for optimal performance across a range of current IBM processor architectures

• Many new optimization options and suboptions to help you improve the performance of your applications

For more information on these and other new enhancements to XL Fortran, see "What´s new for IBM XL Fortran Advanced Edition for Linux V11.1".

Basic Linear Algebra Subprograms (BLAS)
XL Fortran Advanced Edition for Linux also includes the Basic Linear Algebra Subprograms (BLAS) set of high-performance algebraic functions. You can use these functions to perform combined matrix multiplication and addition on general matrices or their transposes.

Optimization and performance
XL Fortran offers optimization and performance-tuning features to exploit all PowerPC systems, including the latest POWER6 hardware architectures. The -qarch and -qtune compiler options include new suboptions to provide code tuning for the new POWER6 processors. In addition, new intrinsic functions are introduced to add functionality and to exploit the capabilities of the new POWER6 processors.

Mathematical Acceleration Subsystem (MASS)
XL Fortran Advanced Edition for Linux includes Mathematical Acceleration Subsystem (MASS). MASS consists of libraries of tuned mathematical intrinsic functions that offer improved performance over the standard mathematical library routines, are thread-safe and support both 32-bit and 64-bit compilations in C, C++, and Fortran applications.

OpenMP API Version 2.5
The OpenMP Application Programming Interface (API) is a portable, scalable programming model that provides a standard interface for developing multiplatform, shared-memory parallel applications in C, C++, and Fortran. The specification is defined by the OpenMP organization, a group of major computer hardware and software vendors, which includes IBM. XL Fortran Advanced Edition for Linux complies with the latest OpenMP API Version 2.5 specification.

Extensions to Fortran language
XL Fortran Advanced Edition for Linux V11.1 implements additional language features compliant to the Fortran 2003 Standard. For more information, see "Enhanced support for Fortran 2003."