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| | Compiler articles and news from Start Learning Now |
 | | A compiler is a computer program that translates a series of statements written in one computer language (called the source code) into a resulting output in another computer language (often called the object or target language). | | | This 'multipass' method of compiling was useful in the early days of computing due to the small main memories of host computers relative to the source code and data. | | | However, translation from a low level language to a high level one is also possible; this is normally known as a decompiler if it is reconstructing a high level language program which (could have) generated the low level language program. |
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http://www.startlearningnow.com/Compiler.htm
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| | Just In Time - Wikipedia, the free encyclopedia |
| | See just-in-time compilation for the technique for improving the performance of interpreted programs in computing. | | | The result was a factory that became the envy of the industrialized world, and has since been widely emulated. | | | Consider a (highly) simplified mathematical model of the ordering process. |
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http://en.wikipedia.org/wiki/Just-in-time
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| | Boosting Java Performance: Native Code & JIT Compilers |
| | With most languages, source files are compiled to create object code files. | | | Timings are in seconds, with the C++ version compiled at the -O1 level of optimization: | | | If an application is compiled to Java byte code and that byte code is interpreted the same way in every environment then you can write a single program which will work on all the different platforms where Java is supported. |
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http://www.disordered.org/Java-JIT.html
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| | Overview of the IBM Java Just-in-Time Compiler |
| | compiler to apply other loop optimizations in the future, because the array exception checking and the array of array implementation for multidimensional arrays in Java are considered two major factors preventing the application of traditional loop optimizations and thus slowing down the execution of loops. | | | compiler to generate array index out-of-bounds checking code by issuing just one instruction, whereas several instructions were required, including load and shift operations, with the original object layout. | | | compiler by optimizing the original bytecode sequences and applying various code generation techniques, such as method inlining, loop versioning, fast type inclusion testing, and others, while keeping the original program semantics. |
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http://www.research.ibm.com/journal/sj/391/suganuma.html
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| | The Fastest Fourier Transform in the West |
| | Runtime compilation is able to maintain portability, and FFTW demonstrates this by its ability to adapt the computation to the particular hardware thereby performing faster algorithms. | | | Presently, to develop an FFTW-like system requires in-depth knowledge of programming languages and compilers and work is underway to "develop a system for program generation that could also be used by people with no specific competence in these fields" as described by the developers of FFTW. | | | (1) A compiler optimization technique where constant sub-expressions are evaluated at compile time. |
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http://www.iis.ee.ic.ac.uk/~frank/surp00/article2/is98
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| | just-in-time compiler - a Whatis.com definition - see also: JIT |
| | After you've written a Java program, the source language statements are compiled by the Java compiler into bytecode rather than into code that contains instructions that match a particular hardware platform's processor (for example, an Intel Pentium microprocessor or an IBM System/390 processor). | | | In the Java programming language and environment, a just-in-time (JIT) compiler is a program that turns Java bytecode (a program that contains instructions that must be interpreted) into instructions that can be sent directly to the processor. | | | However, the virtual machine handles one bytecode instruction at a time. |
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http://whatis.techtarget.com/definition/0,,sid9_gci212423,00.html
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| | SE Using Java, 2nd Edition -- Chapter 39 |
| | To minimize JIT compilation time, as many optimizations as possible should be made before the class file is generated. | | | Due to their longer download time, the associated graphics are usually cached blindly (for example, without checking for changes on the server) for a much longer period of time. | | | Register variable and processor specific optimizations need to be performed by the JIT compiler because they depend on the type of hardware being used to run the code. |
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http://medialab.di.unipi.it/doc/UsingJava/39javafi.htm
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| | Absolutely Positively on Time: What Would It Take? |
| | In embedded software, time matters, yet computing's 20th-century abstractions hold time to be irrelevant. | | | For example, while synchronous digital logic delivers precise timing determinacy, advances in computer architecture and software have made it difficult or impossible to estimate or predict software's execution time. | | | With so many promising starts, the time is ripe to pull these techniques together and build 21st-century embedded computer science. |
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http://www.computer.org/portal/site/computer/menuitem.5d61c1d591162e4b0ef1bd108bcd45f3/index.jsp?&pName=computer_level1_article&TheCat=1001&path=computer/homepage/0705&file=embed.xml&xsl=article.xsl&
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| | Just-in-Time Compilation |
| | I would have liked to have seen a discussion of how each optimization differs from the native compiler version and what aspects of these optimizations were sacrificed for the sake of speed. | | | The experimental results are a bit difficult to analyze, since there is a relatively small set of benchmarks and an unnecessary bias introduced by using a dual processor machine for some of the experiments. | | | Though many of the optimizations are shown to be reasonably effective in terms of the goal of the optimization, the overall benefit is relatively small compared to the benefit claimed by other papers for simplying doing JIT compilation in the first place. |
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http://www.cs.berkeley.edu/~jcondit/cs265/expert.html
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| | JIT - Just In Time |
| | Abbreviation for "just in time." In education, just-in-time instruction is available at the time a learner needs it in order to perform a task, rather than only at the time a provider wants to make it available. | | | A phrase that describes an action that is taken only when it becomes necessary, such as Just-In-Time compilation or Just-In-Time object activation. | | | More information about the definition of JIT may appear below: |
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http://www.auditmypc.com/acronym/JIT.asp
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| | Efficient JavaVM Just-in-Time Compilation - Krall (ResearchIndex) |
| | ...compiling each method with a fixed set of optimizations the first time it was invoked. | | | More advanced adaptive systems [5, 22, 30, 31, 35] moved beyond this simple strategy by dynamically selecting a subset of... | | | However, the reduced environment of an embedded system most likely cannot fulfill their... |
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http://citeseer.ist.psu.edu/krall98efficient.html
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| | Research - People - Guei-Yuan Lueh |
| | Guei-Yuan Lueh is a manager for Just-In-Time compilation development at the Intel MTL. | | | Compiling Task and Data Parallel Programs for iWarp, Workshop on Languages, Compilers, and Run-time Environments for Distributed Memory Machines, Sep. - Oct., 1992. | | | Research Interests: His research interests include computer architecture, register allocation, Just-In-Time compilation, and dynamic optimizations. |
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http://www.intel.com/technology/techresearch/people/bios/Lueh_g.htm
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| | Slide Notes: Just-In-Time Compilation |
| | This just does the linkage; it doesn't move the register windows. | | | Designed for an earlier era of compilers that were bad at optimisation (although never, it turns out, bad at register allocation). | | | Therefore they provide hardware assistance for a solved software problem: always a bad idea. |
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http://www.cs.usyd.edu.au/~scilect/tpop/handouts/JIT_Compilation.htm
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| | Just-in-time compilation - Wikipedia, the free encyclopedia |
| | Dynamic translation was pioneered by the commercial Smalltalk implementation currently known as VisualWorks, in the early 1980s. | | | The bytecode is then interpreted, or run on a virtual machine. | | | In computing, just-in-time compilation (JIT), also known as dynamic translation, is a technique for improving the performance of bytecode-compiled programming systems, by translating bytecode into native machine code at runtime. |
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http://www.wikipedia.org/wiki/Just_In_Time_compilation
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| | LaTTe: A Fast and Efficient Java VM Just-in-Time Compiler |
| | LaTTe was created by the MASS (Microprocessor Architecture and System Software) Laboratory of the School of Electrical Engineering at Seoul National University, as joint work with the VLIW research group at IBM T.J. Watson Research Center. | | | We invite volunteers worldwide to join our LaTTe open-source development team and help us implement the exciting, leading edge JIT compiler, VM and instruction level parallelism optimizations to come. | | | One on-going project where we would like help now is to integrate LaTTe back into the current version of Kaffe. |
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http://latte.snu.ac.kr
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| | Developer Featured Article: Save Debugging Time |
| | The metadata system allows metadata to be persisted at compile time and then queried at runtime so that the CLR knows how to instantiate objects, call their methods, and access their properties. | | | Therefore, even though all your.NET applications will work together regardless of which languages you write them in, some languages might implement more of the.BCL than others. | | | When you start moving in this direction, you will find that you need to pay much more attention to the design of your base classes. |
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http://www.microsoft.com/learning/books/developer/feature/050301.asp
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| | Truly Reusable Code: Assembly Binding Redirection in .NET @ .NET DEVELOPER'S JOURNAL |
| | The process of fixing the mistake was infuriating; as far as I was concerned, code reuse was a nice-sounding concept, but not something with which to be overly preoccupied. | | | But most of the time I found myself having to rebuild VB6 executables simply because I had changed the implementation of a method they referenced in a library. | | | As a consequence of virtualization, method implementations can be switched on demand and applications can receive an assembly upgrade in much the same way that hardware receives upgraded components time and again. |
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http://www.sys-con.com/story/?storyid=47001&DE=1
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| | Computer Science Technical Report 2004-03 |
| | A disadvantage of a compile-only approach in resource-constrained environments is that it uses more memory than interpretation to store compiled code for reuse. | | | When memory is highly constrained, this reduction translates into significant execution time benefits for the benchmarks, JVM, and JVM configuration that we investigated. | | | Most JVMs for such devices execute programs using interpretation. |
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http://www.cs.ucsb.edu/research/trcs/abstracts/2004-03.shtml
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| | Project suggestion |
| | The goal of this project is to extend OCaml's virtual machine with a just-in-time compiler that enable efficient execution of existing OCaml byte code programs. | | | The project involves a large amount of programming (in OCaml and C). | | | JIT compilers were originally designed to achieve efficient execution of system-independent programs distributed over the Internet. |
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http://www.akira.ruc.dk/~mir/Projects/jitocaml.html
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| | Compiling Java Just in Time |
| | Early implementations of the Java(TM) programming language relied on byte code interpretation, leading to poor performance compared to compiled programs. | | | "Compiling Java Just in Time," IEEE Micro, vol. 17, no. 3, pp. | | | This article describes JIT compilation in general and specifically the techniques used in the Sun Java JIT compilers. |
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http://csdl2.computer.org/persagen/DLAbsToc.jsp?resourcePath=/dl/mags/mi/&toc=comp/mags/mi/1997/03/m3toc.xml&DOI=10.1109/40.591653
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| | CGL Meeting Agenda |
| | This short talk will discuss the issues and describe a formalism in which execution can be optimized. | | | Just-in-time compilation makes it possible to compile and/or optimize at run-time, using observed properties of the running code. | | | The decision whether to compile or to interpret then becomes an economic one. |
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http://www.cgl.uwaterloo.ca/agendas/Archives/1997/1997.08.06.html
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| | Exforsys.com - VB.NET 2005 Training : The .NET Framework Architecture Part 2 |
| | In this tutorial of The.NET Framework Architecture Part 2 we will learn about Just-In-Time (JIT) compilation, Assemblies, native assemblies, Global Assembly Cache (GAC) and Comparison of VB.NET, C#, and J#. | | | However, the option settings in the compiler will have to be set to the language of coding before the compiler is used. | | | As stated above, the Just in time compiler is a facility that is invoked by the CLR to convert the IL into machine code. |
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http://www.exforsys.com/content/view/1456/350
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| | Native Image Generator (Ngen.exe) and JIT (Just In Time) Compilation - Data Mining and .NET Framework :: Community |
| | When you run the NGen.NET Framework command line utility on an assembly, the Native Image will be generated and installed in the Native Image Cache and subsequent calls to methods of that assembly will be handled by the Native Image of the assembly. | | | This compilaton is done the first time the method is invoked and since the compilation is done just when the method needs to execute, it is called Just In Time (JIT) compilation. | | | The Common Language Runtime (CLR) uses a JIT (Just In Time) compiler to convert MSIL (Microsoft Intermediate Language) method calls to native code. |
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http://www.visual-basic-data-mining.net/Forum/PrintPost.aspx?PostID=293
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| | Apple takes another swig of Java - Computerworld |
| | Apple Computer, Inc. has furthered its commitment to Java through a licensing deal for Java development tools from Natural Intelligence, Inc., that Apple announced yesterday. | | | Specifically, Apple will license the Roaster Virtual Machine and just-in-time Java compilation technologies from Natural Intelligence. | | | The Roaster Virtual Machine simulates a native Java chip to translate Java code into a format that can be understood by, in this case, the Macintosh. |
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http://www.computerworld.com/printthis/1996/0,4814,24437,00.html
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| | Java Technology |
| | Make sense of many Java technologies and acronyms with Unraveling Java Terminology and the Java Concept Map. | | | Sun has more certifications listed than any other certification vendor. | | | Once again, several of Sun's professional certifications have been recognized as 'HOT', this time by Foote Partners and CIO Magazine. |
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http://java.sun.com
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| | Just-in-Time (JIT) Compiler |
| | After the JIT compiler translates a method, the JVM uses the method's native code instead of Java bytecode. | | | performs just-in-time (JIT) compilation on each class, translating the class to native RISC code when it is loaded. | | | The JIT compiler uses method-by-method translation; that is, it translates each method as it is loaded, rather than translating an entire class. |
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http://nonstop.compaq.com/nsswdocs/nsj/nsj_1_6/proggd/compiler.htm
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| | Comp.compilers: Re: Requirements for Just-in-time Compilation |
| | A JIT compiler might also be more complex in that compilation would | | | while the JIT compiler (assembler?) would translate to machine | | | >Also, is making such a compiler retargetable a lofty goal? |
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http://compilers.iecc.com/comparch/article/01-04-130
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| | Essentials - Close up on .NET Just-in-Time |
| | Languages in the.NET Framework compile to Microsoft Intermediate Language (IL) ready for the JiT (Just-in-Time) compiler to turn them into native code when the program is installed or first run. | | | The runtime engine pulls in uncompiled functions for compilation on the fly as required. |
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http://www.dnjonline.com/articles/essentials/iss24_essentials_4.html
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| | Tower Records - Just In Time - The Compilation - Bam-J Entertainment Presents |
| | On the latest CD Bam-J Entertainment presents...Just In Time the Compilation, they both contributed to the musical content. | | | By the time he was 5 years old Cadillac had a mastered the drums and was jamming with some of the greats of the 80's, like well known singer Jeffrey Osborne. | | | Throughout his school years Cadillac was always in the band, where he played numerous instruments including the piano, violin, trumpet, bass, guitar and saxophone. |
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http://www.towerrecords.com/product.aspx?pfid=3130318
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| | pyrex just in time compilation |
| | It occured to me that an import hook could be written for pyrex '.pyx' files, so that compilation can occur at runtime, if the source file has changed since the last compile. | | | Before I try this myself, has anyone else already written any code to do thi s? | | | 02-22-05 08:59 AM Re: pyrex just in time compilation |
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http://www.codecomments.com/message404332.html
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| | LtU Classic Archives |
| | This is not a new paper but it does provide a detailed and readable description of JIT compilation. | | | Proceedings of the International Conference on Parallel Architectures and Compilation Techniques, pp. | | | Any good references on state of the art JIT techniques? |
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http://lambda-the-ultimate.org/classic/message4750.html
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| | Smartmoney.com: Fund Screen: Smartmoney.com |
| | Investment Research: Become a Smarter Investor in Just 10 Minutes a Week with Dr. Mark Skousen and Investment U - Free! | | | Learn options trading at a free workshop in your area! |
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http://www.smartmoney.com/fundscreen/index.cfm?story=20040326&adv=articles&advtype=FundScreen
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