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And Then There Were None
From Communications of the ACM

And Then There Were None: A Stall-Free Real-Time Garbage Collector For Reconfigurable Hardware

We present a garbage collector synthesized directly to hardware, capable of collecting a heap of uniform objects completely concurrently. These heaps are composed...

From Communications of the ACM

Technical Perspective: Centip3De Demonstrates More Than Moore...

Exponentially increasing transistor integration also demands more interconnections, which have started hitting fundamental limits. The Centip3De design demonstrates...

Centip3De
From Communications of the ACM

Centip3De: A Many-Core Prototype Exploring 3D Integration and Near-Threshold Computing

This paper evaluates the use of three-dimensional integration to reduce global interconnect by adding multiple layers of silicon with vertical connections between...

From Communications of the ACM

Technical Perspective: Video Quality Assessment in the Age of Internet Video

With video delivery, it appears that once again "the Internet changes everything." In this changed environment, what measures of quality are most relevant, and...

Understanding the Impact of Video Quality on User Engagement
From Communications of the ACM

Understanding the Impact of Video Quality on User Engagement

As Internet-based videos become mainstream, user expectation for high quality is constantly increasing. In this context, it is crucial for content providers to...

From Communications of the ACM

Technical Perspective: Is Dark Silicon Real?

The microprocessor chip R&D community has been well aware of the so-called "power wall" challenge for over a decade. The following work by Esmaeilzadeh et al. is...

Power Challenges May End the Multicore Era
From Communications of the ACM

Power Challenges May End the Multicore Era

Tthe microprocessor industry has shifted to multicore scaling as its principal strategy for continuing performance growth. However, while transistor count increases...

From Communications of the ACM

Technical Perspective: The Realities of Home Broadband

Buying residential broadband services seems relatively simple: pick among a small number of plans, and then compare similar plans by price. Unfortunately, reality...

Measuring Home Broadband Performance
From Communications of the ACM

Measuring Home Broadband Performance

We present the results from the first study of Internet access link performance measured directly from home routers. Our findings provide a snapshot of access network...

From Communications of the ACM

Technical Perspective: For Better or Worse, Benchmarks Shape a Field

Like other IT fields, computer architects initially reported incomparable results. We quickly saw the folly of this approach. We then went through a sequence...

Looking Back and Looking Forward
From Communications of the ACM

Looking Back and Looking Forward: Power, Performance, and Upheaval

The past 10 years have delivered two significant revolutions. Microprocessor design has been transformed — leading to multicore processors. And an entirely new...

Exact Matrix Completion via Convex Optimization
From Communications of the ACM

Exact Matrix Completion via Convex Optimization

Suppose that one observes an incomplete subset of entries selected from a low-rank matrix. When is it possible to complete the matrix and recover the entries that...

From Communications of the ACM

Technical Perspective: Reconstructing the Unknown, Balancing Structure and Uncertainty

The problem of estimating or reconstructing an unknown structured object from incomplete, partial, noisy measurements is a fundamental one in scientific and technological...

From Communications of the ACM

Technical Perspective: The Benefits of Capability-Based Protection

Affordable personal computing hardware and the usable GUI-based PC operating systems made the vision of "a computer on every desktop and in every home" a reality...

A Taste of Capsicum
From Communications of the ACM

A Taste of Capsicum: Practical Capabilities For Unix

Capsicum is a lightweight operating system capability and sandbox framework planned for inclusion in FreeBSD 9. Capsicum extends, rather than replaces, UNIX APIs...

From Communications of the ACM

Technical Perspective: Content-Centric Networking

Much has changed in the 50 years since the invention of packet switching and the early network designs and deployments that...

Networking Named Content
From Communications of the ACM

Networking Named Content

Current network use is dominated by content distribution and retrieval yet current networking protocols are designed for conversations between hosts. We present...

From Communications of the ACM

Technical Perspective: Power Efficiency as the #1 Design Constraint

Moore's Law, and associated observations by Bob Dennard, describe key technical...

Understanding Sources of Ineffciency in General-Purpose Chips
From Communications of the ACM

Understanding Sources of Ineffciency in General-Purpose Chips

To better understand what improvement in processor efficiency is possible, we quantify the performance and energy overheads of a 720p HD H.264 encoder running on...

From Communications of the ACM

Technical Perspective: Skintroducing the Future

Two critical goals for mobile devices seem intrinsically in conflict. For carrying, the smaller the better. Yet for...
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