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From Communications of the ACM

Technical Perspective: On Heartbleed: A Hard Beginnyng Makth a Good Endyng

When a serious security vulnerability is discovered in the SSL/TLS protocol, one would naturally expect a rapid response. "Analysis of SSL Certificate Reissues...

Analysis of SSL Certificate Reissues and Revocations in the Wake of Heartbleed
From Communications of the ACM

Analysis of SSL Certificate Reissues and Revocations in the Wake of Heartbleed

We use Heartbleed, a widespread OpenSSL vulnerability from 2014, as a natural experiment to determine whether administrators are properly managing their X.509 certificates...

From Communications of the ACM

Technical Perspective: Building Bug-Free Compilers

What to do about buggy compilers? The authors of "Practical Verification of Peephole Optimizations with Alive" give us a compelling and practical answer.

Practical Verification of Peephole Optimizations with Alive
From Communications of the ACM

Practical Verification of Peephole Optimizations with Alive

We created Alive, a domain-specific language for writing correct peephole optimizations and for automatically either proving them correct or else generating counterexamples...

From Communications of the ACM

Technical Perspective: Can High Performance Be Portable?

"Halide: Decoupling Algorithms from Schedules for High-Performance Image Processing" by Ragan-Kelley et al. on the image processing language Halide explores a substantially...

Halide
From Communications of the ACM

Halide: Decoupling Algorithms from Schedules For High-Performance Image Processing

We propose a new programming language for image processing pipelines, called Halide, that separates the algorithm from its schedule.

From Communications of the ACM

Technical Perspective: Moving Spectrum

The incentive auction scenario provides the backdrop for the breathtaking research contribution presented by Newman et al. in "Deep Optimization for Spectrum Repacking...

Deep Optimization For Spectrum Repacking
From Communications of the ACM

Deep Optimization For Spectrum Repacking

This paper describes the process by which we built the SAT-based Feasibility Checker, a crucial element of the 2016-17 U.S. FCC "incentive auction" design.

From Communications of the ACM

Technical Perspective: A Simple, Elegant Approach to Non-Numeric Parallelization

"Automatically Accelerating Non-Numerical Programs by Architecture-Compiler Co-Design," by Simone Campanoni, et al., proposes a modest hardware extension to support...

Automatically Accelerating Non-Numerical Programs By Architecture-Compiler Co-Design
From Communications of the ACM

Automatically Accelerating Non-Numerical Programs By Architecture-Compiler Co-Design

HELIX-RC is a compiler/microprocessor co-design that opens loops to parallelization by decoupling communication from thread execution in conventional multicore...

From Communications of the ACM

Technical Perspective: Solving Imperfect Information Games

"Heads-Up Limit Hold'em Poker Is Solved," by Michael Bowling, et al., takes the counterfactual regret minimization method for approximating a Nash equilibrium to...

Heads-Up Limit Hold'em Poker Is Solved
From Communications of the ACM

Heads-Up Limit Hold'em Poker Is Solved

This paper is an extended version of our original 2015 Science article, with additional results showing Cepheus' in-game performance against computer and human...

From Communications of the ACM

Technical Perspective: Shedding New Light on an Old Language Debate

"A Large-Scale Study of Programming Languages and Code Quality in GitHub," by Baishakhi Ray, et al., studies whether programming language choice and code quality...

A Large-Scale Study of Programming Languages and Code Quality in Github
From Communications of the ACM

A Large-Scale Study of Programming Languages and Code Quality in Github

What is the effect of programming languages on software quality? In this study, we gather a very large data set from GitHub in an attempt to shed some empirical...

From Communications of the ACM

Technical Perspective: Unexpected Connections

The inherent scalability of an interface is the focus of "The Scalable Commutativity Rule" by Austin T. Clements, et al.

The Scalable Commutativity Rule
From Communications of the ACM

The Scalable Commutativity Rule: Designing Scalable Software For Multicore Processors

This paper introduces an interface-driven approach to building scalable software.

From Communications of the ACM

Technical Perspective: Ironfleet Simplifies Proving Safety and Liveness Properties

"IronFleet: Proving Safety and Liveness of Practical Distributed Systems," by Chris Hawblitzel, et al., describes mechanically checked proofs for two non-trivial...

Ironfleet
From Communications of the ACM

Ironfleet: Proving Safety and Liveness of Practical Distributed Systems

We demonstrate the methodology on a complex implementation of a Paxos-based replicated state machine library and a lease-based sharded key-value store. With our...

From Communications of the ACM

Technical Perspective: Building Knowledge Bases from Messy Data

"DeepDive: Declarative Knowledge Base Construction" is a prime example of groundbreaking work in the area of Knowledge Base Construction.

Deepdive
From Communications of the ACM

Deepdive: Declarative Knowledge Base Construction

We describe DeepDive, a system that combines database and machine learning ideas to help to develop knowledge base construction systems.
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