IBM® Open XL Fortran for Linux® on Power® details

Adoption of the LLVM infrastructures

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Combines the IBM XL Fortran frontend with the LLVM infrastructure. Enables you to enjoy the industry-leading Fortran implementation while gaining additional capabilities provided by the LLVM infrastructure.

Exploitation of the latest Power10 architecture

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Fully exploits Power10 architecture. Provides Power10 architecture options, built-in functions, and tuned library functions to maximize the hardware ROI.

Link Time Optimization (LTO)

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Provides program optimization during linking. Enables you to take advantage of intermodular optimizations without making any significant changes to the makefiles or build system.

Profile Guided Optimization (PGO)

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Provides compiler optimization technique in computer programming that uses profiling to improve program runtime performance.

Language standard compliance

Supports FORTRAN 77, Fortran 90, Fortran 95, Fortran 2003, and a subset of Fortran 2008; supports a subset of Technical Specification 29113 for further interoperability of Fortran with C; helps to protect investments in existing Fortran source and object code that is built with previous versions of the compilers; supports the compatibility of object code or libraries that are compiled with previous versions of IBM XL Fortran with the new IBM Open XL Fortran compiler and runtime environment.

High-performance libraries

Provides a set of libraries for high-performance mathematical computing including the Mathematical Acceleration Subsystem (MASS) and Basic Linear Algebra Subprograms (BLAS).

Optimization reports

Provides information to help you utilize compiler features to optimize your applications.

Vector programming

Provides language extensions to support vector multimedia extension (VMX) and vector scalar extension (VSX) programming.

Technical details

Software requirements

  • Red Hat® Enterprise Linux (RHEL) 8.4, 8.6, or 9.0
  • Ubuntu 20.24 or 22.04
  • SUSE Linux Enterprise Server (SLES) 15 SP3

Hardware requirements

Use any IBM Power server as long as it is supported by your operating system distribution.

  • Approximately 200 MB for product packages
  • Minimum of 2 GB hard drive space for paging
  • Minimum of 512 MB for temporary files
  • 2 GB RAM minimum; 4 GB or more RAM recommended