Pvf includes full support for 64bit addressing, native integrated. The papers are organized in sections on finegrain parallelism, interprocedural analysis, program analysis, fortran 90 and hpf, loop parallelization for hpf compilers, tools and libraries, looplevel optimization, automatic data distribution, compiler models, irregular computation, objectoriented and functional parallelism. It combines restructuring and reformatting with global static analysis, dynamic analysis and many other features in a single powerful package. Interprocedural analysis ipa enables the compiler to optimize across different. Pgi visual fortran pvf contains a suite of pgi protected geographical indication highperformance 64bit and 32bit parallel fortran compilers to. Interprocedural analysis and optimization, communications. Interprocedural optimization ipo intel developer zone. Pdf while efficient new algorithms for interprocedural dataflow analysis have. Suif 1 is a parallelizing compiler and suif 2 performs interprocedural analysis. The compiler may apply the following optimizations. Interprocedural analysis an overview sciencedirect topics.
These results demonstrate the importance of interprocedural array dataflow analysis, array privatization and array reduction recognition. Pgi compilers are supported on, and can generate fully optimized code for, a broad range of popular highperformance computing platforms including 64bit x64 multicore processorbased systems as well as 32bit x86 systems. Forcheck detects more anomalies in your program than most compilers do. Ipo differs from other compiler optimization because it analyzes the entire program. The fortran 90 concept of kind provides the means for selecting and specifying the numeric model of integer and real data. Comprehensive set of compiler optimizations including dependence analysis and global optimization, function inlining including library functions, simd vectorization, invariant conditional removal, loop interchange, loop splitting, loop unrolling, loop fusion, interprocedural. The intraprocedural propagation is presented, as well as a general linear framework for interprocedural analyses, which handles array reshapes. They reemerged into the commercial compiler world in the early 1990s with compilers from both convex the application compiler for the convex c4 and from ardent the compiler for the ardent titan. The open source gcc was criticized for a long time for lacking powerful interprocedural optimizations, but it is changing in this respect.
In addition to many commonly known passes, polaris includes advanced capabilities performing the following tasks. Interprocedural optimization ipo intel fortran compiler 19. Intel fortran compiler, also known as ifort, is a group of fortran compilers from intel for windows, linux, and os x. But research on the analysis of fortran programs is still going on, as a number of problems are not yet satisfactorily solved and others are emerging with new language dialects. Interprocedural optimization ipo is an automatic, multistep process that allows the compiler to analyze your code to determine where you can benefit from specific optimizations. Pgi fortran compilers offer worldclass performance and features including both automatic and openmp 3. Pgi compilers deliver the performance you need on cpus, with openacc and cuda fortran for hpc applications development on gpuaccelerated systems. Ieee transactions on software engineering special issue on architectureindependent languages and software tools for parallel processing archive. But research on the analysis of fortran programs is still go. In this article we examine the role played by the interprocedural analysis of array accesses in the automatic parallelization of fortran programs.
The compiler can perform highquality interprocedural analysis, dataflow analysis, data dependence analysis, and array region analysis. It generates code that leverages the capabilities of the latest power9 architecture and maximizes your hardware utilization. Interprocedural constant propagation proceedings of the 1986. Using interprocedural analysis ibm knowledge center. Sep 08, 2016 intel fortran compiler, also known as ifort, is a group of fortran compilers from intel for windows, linux, and os x. In this video, we learn the use of bisection method to find solution of function in one variable. Interprocedural analyses ipa are becoming more and more common in commercial compilers. Implementation and empirical results mayer, herbert g wolfe, michael 19931101 00.
Pvf incorporates pgis native parallelizing fortran compiler, which generates fully optimized code for single core and multicore 64bit amd64, intel 64 and 32bit x86 processors. The infrastructure was intended as a general compiler framework for multiple languages. May 26, 2016 the intraprocedural propagation is presented, as well as a general linear framework for interprocedural analyses, which handles array reshapes. With the advent of vector and parallel computers, singleprocedureanalysis will no longer be enough to produce highquality parallelized code. In the simplest case, in which every procedure call invokes a procedure named by a literal constant, as in call foox, y, z, the problem is straightforward. The first problem that the compiler must address in interprocedural analysis is the construction of a call graph. Highperformance pgi compilers pvf features the latest version of pgis native openmp and autoparallel fortran compilers. Interprocedural parallelization analysis in suif request pdf. List and compiler info options cray documentation portal. Implicit aliasing caused by reference parameter passing can be uncovered in a program with multiple compilation units by.
Algorithms exist for compiling fortran d for mimd distributedmemory machines, but are significantly restricted in the presence of procedure calls. It performs a static analysis of a fortran program or separate fortran program units. Citeseerx interprocedural compilation of fortran d for. Interprocedural array alignment analysis springerlink. Pvf delivers worldclass performance through stateoftheart vectorization, parallelization, interprocedural analysis, memoryhierarchy optimizations, function. Compiler command line options cray documentation portal. Efficient interprocedural array dataflow analysis for. Interprocedural analyses of fortran programs sciencedirect. The papers are organized in sections on finegrain parallelism, interprocedural analysis, program analysis, fortran 90 and hpf, loop parallelization for hpf compilers, tools and libraries, looplevel optimization, automatic data distribution, compiler models, irregular computation, object. Were upgrading the acm dl, and would like your input. Openacc and cuda programs can run several times faster on a single tesla v100 gpu compared to all the cores of a dualsocket server, and interoperate with mpi and openmp to deliver the full power of.
Interprocedural optimization ipo is a collection of compiler techniques used in computer. Because it locates bugs as early in the development phase as possible, it saves you time and annoyance. In this paper we introduce some of the problems that can be solved with the help of an interprocedural analysis and. Addresstaken analysis array dimension padding alias analysis automatic array transposition automatic memory pool.
Interprocedural array region analyses springerlink. Interprocedural analysis and optimizations are common in modern commercial compilers from hp, ibm, sgi, intel, microsoft, and sun microsystems. Language features are provided for inquiring about the numeric model and specifying the kind of the data entity. Stateoftheart compiler technologies found in pvf include vectorization, parallelization, interprocedural analysis, memory hierarchy optimization, cross file. Comprehensive set of compiler optimizations including dependence analysis and global optimization, function inlining including library functions, simd vectorization, invariant conditional removal, loop interchange, loop splitting, loop unrolling, loop fusion, interprocedural analysis ipa, interprocedural optimization of libraries and more. Dec 16, 2019 interprocedural optimization ipo is an automatic, multistep process that allows the compiler to analyze your code to determine where you can benefit from specific optimizations. Intel visual fortran compiler professional edition with imsl fortran numerical library offers the compiler, intel mkl, and imsl.
Introduction as machines and languages have become more complicated, compiler technology has necessarily become more sophisticated. Improve fortran code quality with static analysis intel parallel studio xe evaluation guide introduction this document is an introductory tutorial describing the static analysis feature of the intel parallel studio xe. Another open source compiler with full analysis and. Mipafast is the recommended option to get best performances for global optimization. Interprocedural optimization ipo is a collection of compiler techniques used in computer programming to improve performance in programs containing many frequently used functions of small or medium length. Fortran d is a version of fortran extended with data. The techniques of interprocedural analysis and optimization were the subject of academic research in the 1980s and 1990s. This paper presents interprocedural analysis, optimization, and code generation algorithms for fortran d that limit compilation to only one pass over each procedure. Download and install the software accepting all the defaults. Supports fortran 77, fortran 90, fortran 95, fortran 2003, and a subset of the fortran 2008 standard. Polaris performs its transformations in several compilation passes. It can sometimes make sense to perform interprocedural analyses within an intermediate level, such as a library or a java package. Languages and compilers for parallel computing 8th.
We examine issues concerning the effectiveness of automatic parallelization using these methods and. Implementation and empirical results interprocedural alias analysis. Because it locates bugs as early in the development phase as possible, it saves you time and annoyance and helps you to produce more reliable code. Interprocedural analysis and optimization, communications on.
Fortran analysis, testing, and programming aid forcheck. We presented an overview of an automatic alignment analysis tool elsewhere, which is able to automatically generate alignment proposals for the arrays accessed in a procedure and thus simplifies the data distribution problem. Citeseerx document details isaac councill, lee giles, pradeep teregowda. It provides a brief description of the goals of the product feature and walks through an endtoend example showing. Interprocedural analyses of fortran programs b eatrice creusillet, fran.
Advanced compiler technologies found in pvf include vectorization, parallelization, interprocedural analysis, memory hierarchy optimization, cross file function inlining, cpuspecific optimization and more. We use the ptran system to provide measurements of several benchmarks to compare different methods of representing interprocedurally accessed arrays. The compiler can perform highquality interprocedural analysis, dataflow analysis, data dependence analysis, and. Stateoftheart compiler technologies found in pvf include vectorization, parallelization, interprocedural analysis, memory. Cooper, linda torczon, in engineering a compiler second edition, 2012. An empirical study of precise interprocedural array analysis. Implicit aliasing caused by reference parameter passing can be uncovered in a program with multiple. If there is a call to another routine that occurs within a loop, ipo analysis may determine that it is best to inline that.
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