检索结果-内蒙古大学图书馆

36th acm sigplan conference on programming language design and implementation

作者： Johnson, Andrew Waye, Lucas Moore, Scott Chong, Stephen MIT Lincoln Lab Cambridge MA 02139 USA Harvard Univ Cambridge MA 02138 USA

ISBN: (纸本)9781450334686

We present PIDGIN, a program analysis and understanding tool that enables the specification and enforcement of precise application-specific information security guarantees. PIDGIN also allows developers to interactively explore the information flows in their applications to develop policies and investigate counter-examples. PIDGIN combines program dependence graphs (PDGs), which precisely capture the information flows in a whole application, with a custom PDG query language. Queries express properties about the paths in the PDG;because paths in the PDG correspond to information flows in the application, queries can be used to specify global security policies. PIDGIN is scalable. Generating a PDG for a 330k line Java application takes 90 seconds, and checking a policy on that PDG takes under 14 seconds. The query language is expressive, supporting a large class of precise, application-specific security guarantees. Policies are separate from the code and do not interfere with testing or development, and can be used for security regression testing. We describe the design and implementation of PIDGIN and report on using it: (1) to explore information security guarantees in legacy programs;(2) to develop and modify security policies concurrently with application development;and (3) to develop policies based on known vulnerabilities.

关键词： Application-specific security program dependence graph graph query language

来源：评论

学校读者我要写书评

暂无评论

Deployable Probabilistic programming

Deployable Probabilistic Programming

引用

acm sigplan International Symposium on New Ideas, New Paradigms, and Reflections on programming and Software (Onward) part of SPLASH conference

作者： Tolpin, David PUB Tel Aviv Israel

ISBN: (纸本)9781450369954

We propose design guidelines for a probabilistic programming facility suitable for deployment as a part of a production software system. As a reference implementation, we introduce Infergo, a probabilistic programming facility for Go, a modern programming language of choice for server-side software development. We argue that a similar probabilistic programming facility can be added to most modern general-purpose programming languages. Probabilistic programming enables automatic tuning of program parameters and algorithmic decision making through probabilistic inference based on the data. To facilitate addition of probabilistic programming capabilities to other programming languages, we share implementation choices and techniques employed in development of Infergo. We illustrate applicability of Infergo to various use cases on case studies, and evaluate Infergo's performance on several benchmarks, comparing Infergo to dedicated inference-centric probabilistic programming frameworks.

关键词： probabilistic programming algorithmic differentiation bayesian modeling

来源：评论

学校读者我要写书评

暂无评论

Task granularity analysis in logic programs 90

Task granularity analysis in logic programs

引用

Proceedings of the acm sigplan '90 conference on programming language design and implementation

作者： Debray, Saumya K. Lin, Nai-Wei Hermenegildo, Manuel Univ of Arizona Tucson United States

ISBN: (纸本)0897913647

While logic programming languages offer a great deal of scope for parallelism, there is usually some overhead associated with the execution of goals in parallel because of the work involved in task creation and scheduling. In practice, therefore, the 'granularity' of a goal, i.e. an estimate of the work available under it, should be taken into account when deciding whether or not to execute a goal concurrently as a separate task. This paper describes a method for estimating the granularity of a goal at compile time. The runtime overhead associated with our approach is usually quite small, and the performance improvements resulting from the incorporation of grainsize control can be quite good. This is shown by means of experimental results.

关键词： Computer programming

来源：评论

学校读者我要写书评

暂无评论

DIY Assistant: A Multi-modal End-User Programmable Virtual Assistant 2021

DIY Assistant: A Multi-modal End-User Programmable Virtual A...

引用

42nd acm sigplan International conference on programming language design and implementation (PLDI)

作者： Fischer, Michael H. Campagna, Giovanni Choi, Euirim Lam, Monica S. Stanford Univ Stanford CA 94305 USA

ISBN: (纸本)9781450383912

While Alexa can perform over 100,000 skills, its capability covers only a fraction of what is possible on the web. Individuals need and want to automate a long tail of web-based tasks which often involve visiting different websites and require programming concepts such as function composition, conditional, and iterative evaluation. This paper presents diya (Do-It-Yourself Assistant), a new system that empowers users to create personalized web-based virtual assistant skills that require the full generality of composable control constructs, without having to learn a formal programming language. With DIYA, the user demonstrates their task of interest in the browser and issues a few simple voice commands, such as naming the skills and adding conditions on the action. diya turns these multi-modal specifications into voice-invocable skills written in the ThingTalk 2.0 programming language we designed for this purpose. diya is a prototype that works in the Chrome browser. Our user studies show that 81% of the proposed routines can be expressed using diya. diya is easy to learn, and 80% of users surveyed find diya useful.

关键词： end-user programming programming by demonstration web automation voice user interfaces virtual assistants

来源：评论

学校读者我要写书评

暂无评论

Concurrent Orchestration in Haskell

Concurrent Orchestration in Haskell

引用

3rd acm Haskell Symposium on Haskell

作者： Launchbury, John Elliott, Trevor Galois Inc. Portland OR United States

ISBN: (纸本)9781450302524

We present a concurrent scripting language embedded in Haskell, emulating the functionality of the Orc orchestration language by providing many-valued (real) non-determinism in the context of concurrent effects. We provide many examples of its use, as well as a brief description of how we use the embedded Ore DSL in practice. We describe the abstraction layers of the implementation, and use the fact that we have a layered approach to demonstrate algebraic properties satisfied by the combinators.

关键词： design languages Concurrency Haskell Orc DSL Monad

来源：评论

学校读者我要写书评

暂无评论

Improving JavaScript Performance by Deconstructing the Type System 14

Improving JavaScript Performance by Deconstructing the Type ...

引用

35th acm sigplan conference on programming language design and implementation (PLDI)

作者： Ahn, Wonsun Choi, Jiho Shull, Thomas Garzaran, Maria J. Torrellas, Josep Univ Illinois Champaign IL 61820 USA

ISBN: (纸本)9781450327848

Increased focus on Java Script performance has resulted in vast performance improvements for many benchmarks. However, for actual code used in websites, the attained improvements often lag far behind those for popular benchmarks. This paper shows that the main reason behind this shortfall is how the compiler understands types. Java Script has no concept of types, but the compiler assigns types to objects anyway for ease of code generation. We examine the way that the Chrome V8 compiler defines types, and identify two design decisions that are the main reasons for the lack of improvement: (1) the inherited prototype object is part of the current object's type definition, and (2) method bindings are also part of the type definition. These requirements make types very unpredictable, which hinders type specialization by the compiler. Hence, we modify V8 to remove these requirements, and use it to compile the Java Script code assembled by JSBench from real websites. On average, we reduce the execution time of JSBench by 36%, and the dynamic instruction count by 49%.

关键词： design languages Performance Java Script Scripting language Dynamic Typing Type Specialization Hidden Class Inline Caching Prototype

来源：评论

学校读者我要写书评

暂无评论

Using Camlp4 for Presenting Dynamic Mathematics on the Web: DynaMoW, an OCaml language Extension for the Run-Time Generation of Mathematical Contents and their Presentation on the Web 11

Using Camlp4 for Presenting Dynamic Mathematics on the Web: ...

引用

16th acm sigplan International conference on Functional programming (ICFP 11)

作者： Chyzak, Frederic Darrasse, Alexis INRIA Rocquencourt France

ISBN: (纸本)9781450308656

We report on the design and implementation of a programming tool, DynaMoW, to control interactive and incremental mathematical calculations to be presented on the web. This tool is implemented as a language extension of OCaml using Cam1p4. Fragments of mathematical code written for a computer-algebra system as well as fragments of mathematical web documents are embedded directly and naturally inside OCaml code. A DynaMoW-based application is made of independent web services, whose parameter types are checked by the OCaml extension. The approach is illustrated by two implementations of online mathematical encyclopedias on top of DynaMoW.

关键词： mathematical encyclopedias quotations antiquotations metaprogramming web services

来源：评论

学校读者我要写书评

暂无评论

The liberty structural specification language: A high-level modeling language for component reuse

The liberty structural specification language: A high-level ...

引用

Proceedings of the 2004 acm sigplan conference on programming language design and implementation (PLDI'04)

作者： Vachharajani, Manish Vachharajani, Neil August, David I. Department of Computer Science Princeton University Princeton NJ 08544 United States

Rapid exploration of the design space with simulation models is essential for quality hardware systems research and development. Despite striking commonalities across hardware systems, designers routinely fail to achieve high levels of reuse across models constructed in existing general-purpose and domain-specific languages. This lack of reuse adversely impacts hardware system design by slowing the rate at which ideas are evaluated. This paper presents an examination of existing languages to reveal their fundamental limitations regarding reuse in hardware modeling. With this understanding, a solution is described in the context of the design and implementation of the Liberty Structural Specification language (LSS), the input language for a publicly available high-level digital-hardware modeling tool called the Liberty Simulation Environment. LSS is the first language to enable low-overhead reuse by simultaneously supporting static inference based on hardware structure and flexibility via parameterizable structure. Through LSS, this paper also introduces a new type inference algorithm and a new programming language technique, called use-based specialization, which, in a manner analogous to type inference, customizes reusable components by statically inferring structural properties that otherwise would have had to have been specified manually.

关键词： Computer programming languages

来源：评论

学校读者我要写书评

暂无评论

Descend: A Safe GPU Systems programming language

引用

PROCEEDINGS OF THE acm ON programming languageS-PacmPL 2024年第PLDI期8卷 841-864页

作者： Koepcke, Bastian Gorlatch, Sergei Steuwer, Michel Univ Munster Munster Germany Tech Univ Berlin Berlin Germany

Graphics Processing Units (GPU) offer tremendous computational power by following a throughput oriented paradigm where many thousand computational units operate in parallel. programming such massively parallel hardware is challenging. Programmers must correctly and efficiently coordinate thousands of threads and their accesses to various shared memory spaces. Existing mainstream GPU programming languages, such as CUDA and OpenCL, are based on C/C++ inheriting their fundamentally unsafe ways to access memory via raw pointers. This facilitates easy to make, but hard to detect bugs, such as data races and deadlocks. In this paper, we present Descend: a safe GPU programming language. In contrast to prior safe high-level GPU programming approaches, Descend is an imperative GPU systems programming language in the spirit of Rust, enforcing safe CPU and GPU memory management in the type system by tracking Ownership and Lifetimes. Descend introduces a new holistic GPU programming model where computations are hierarchically scheduled over the GPU's execution resources: grid, blocks, warps, and threads. Descend's extended Borrow checking ensures that execution resources safely access memory regions without data races. For this, we introduced views describing safe parallel access patterns of memory regions, as well as atomic variables. For memory accesses that can't be checked by our type system, users can annotate limited code sections as unsafe. We discuss the memory safety guarantees offered by Descend and evaluate our implementation using multiple benchmarks, demonstrating that Descend is capable of expressing real-world GPU programs showing competitive performance compared to manually written CUDA programs lacking Descend's safety guarantees.

关键词： GPU programming language design memory safety type systems

来源：评论

学校读者我要写书评

暂无评论

Profile guided code positioning 90

Profile guided code positioning

引用

Proceedings of the acm sigplan '90 conference on programming language design and implementation

作者： Pettis, Karl Hansen, Robert C. Hewlett Packard Co California Language Lab Cupertino United States

ISBN: (纸本)0897913647

This paper presents the results of our investigation of code positioning techniques using execution profile data as input into the compilation process. The primary objective of the positioning is to reduce the overhead of the instruction memory hierarchy. After initial investigation in the literature, we decided to implement two prototypes for the Hewlett-Packard Precision Architecture (PA-RISC). The first, built on top of the linker, positions code based on whole procedures. This prototype has the ability to move procedures into an order that is determined by a 'closest is best' strategy. The algorithms we implemented are described through examples in this paper. The performance improvements from our work are also summarized in various tables and charts.

关键词： Computer programming languages

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：