PGI User's Guide

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

References related to AcceleratorsThis intrinsic Returns this value ...fabsflogflog10fpowfsinfsinhfsqrtftanftanhfabsolute value of the floating-point argument.natural logarithm of the specified value.base-10 logarithm of the specified value.value of the first argument raised to the power of the second argument.value of the sine of the argument.hyperbolic sine of the argument.square root of the argument.tangent of the specified value.hyperbolic tangent of the specified value.References related to Accelerators• ISO/IEC 1539-1:1997, Information Technology - Programming Languages - Fortran, Geneva, 1997 (Fortran95).• American National Standard Programming Language C, ANSI X3.159-1989 (ANSI C).• ISO/IEC 9899:1999, Information Technology - Programming Languages - C, Geneva, 1999 (C99).• PGDBG Dubugger Manual, The Portland Group, Release 11.1, January, 2011. Available online at http://www.pgroup.com/doc/pgdbg.pdf.• PGPROF Profiler Manual, The Portland Group, Release 11.1, January, 2011. Available online at http://www.pgroup.com/doc/pgprof.pdf.• PGI Fortran Reference, The Portland Group, Release 11.1, January, 2011. Available online at http://www.pgroup.com/doc/pgifortref.pdf106
Chapter 8. Using Directives andPragmasIt is often useful to be able to alter the effects of certain command line options or default behavior of thecompiler. Fortran directives and C/C++ pragmas provide pragmatic information that control the actions ofthe compiler in a particular portion of a program without affecting the program as a whole. That is, while acommand line option affects the entire source file that is being compiled, directives and pragmas apply, ordisable, the effects of a command line option to selected subprograms or to selected loops in the source file,for example, to optimize a specific area of code. Use directives and pragmas to tune selected routines or loops.PGI Proprietary Fortran DirectivesPGI Fortran compilers support proprietary directives that may have any of the following forms:!pgi$g directive!pgi$r directive!pgi$l directive!pgi$ directiveNoteIf the input is in fixed format, the comment character must begin in column 1 and either * or C isallowed in place of !.The scope indicator controls the scope of the directive. This indicator occurs after the $. Some directivesignore the scope indicator.The valid scopes, shown in the previous forms of the directive, are these:grl(global) indicates the directive applies to the end of the source file.(routine) indicates the directive applies to the next subprogram.(loop) indicates the directive applies to the next loop, but not to any loop contained within the loop body.Loop-scoped directives are only applied to DO loops.107
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PGI ® Compiler User’s Guide4. Us
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Organizationxvi• Fortran 95 Handb
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Conventionsin this guide with which
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Chapter 1. Getting StartedThis chap
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Invoking Function Inlining50except:
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Page 110 and 111: Accelerator DirectivesAccelerator D
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Examples160int a,b,c;a=8; b=2;print
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Win32 Calling Conventions164call wo
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Medium Memory Model and Large Array
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Large Array and Small Memory Model
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Extended Inline AssemblyExtended In
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Extended Inline Assembly180movq %rs
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Extended Inline AssemblyModifierDes
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Intrinsicsvoid example21(){void * s
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suboptions, 18syntax, 2, 17Commands
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InstallLinux portability package, 1
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modifier *, 186, 186modifier &, 186
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optimization, 39-tp option, 39UNIXc
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