Topics  Using XL Compilers for Blue Gene L    About this document Who should read this document How to use this document How this document is organized Conventions used in this document Related information    Compiling and linking applications for Blue Gene Compiling programs Compiler option defaults -qarch=[440d | 440] -qbgl -qnoautoconfig -qtune=440 Blue Gene specific options -qfloat=[rngchk | norngchk] Unsupported options    Tuning your code for Blue Gene/L Using the compiler optimization options Structuring data in adjacent pairs Using vectorizable basic blocks Using inline functions Turning off range checking Removing possibilities for aliasing (C/C++) Structuring computations in batches of five or ten Checking for data alignment    Using the high performance libraries Using the Mathematical Acceleration Subsystem (MASS) Using the scalar library Using the vector libraries Compiling and linking a program with MASS    Using XL builtin floating-point functions for Blue Gene/L Complex type manipulation functions Load and store functions Move functions Arithmetic functions Unary functions Binary functions Multiply-add functions Select functions    Index  Getting Started  Compiler Reference  Language Reference  Programming Guide  Installation

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