In many computations, average data rates are often significantly lower than the peak rate possible. Consequently, VLSI systems capable of processing data at a maximum specified rate can be excessively dissipative when data rates are low. Such inefficiencies are particularly pronounced in heavily pipelined designs, in which registers account for the bulk of energy dissipation in a system. This p...

In this study we show that fine-grain multithreading is an effective way to increase instruction-level parallelism and hide the latencies of long-latency operations in a superscalar processor. The effects of long-latency operations, such as remote memory references, cachemisses, and multi-cycle floating-point calculations, are detrimental to performance since such operations typically cause a s...

Many present-day microprocessors have ne grain parallelism, be it in the form of a pipeline, of multiple functional units, or replicated processors. The eecient use of such architectures depends on the capability of the compiler to schedule the execution of the object code in such a way that most of the available hardware is in use while avoiding so-called dependences. In the case of one simple...

A system is proposed that is capable of identifying the true originator of an email message. This information can be combined with existing whitelist and blacklist technology to provide an effective anti-spam system. The approach is to store validation information that can be traced to the sender and to utilize a “Reachback URL” in the message to access the validation information. The approach ...

It is di cult to map the execution model of multithreading languages (languages which support ne-grain dynamic thread creation) onto the single stack execution model of C. Consequently, previous work on e cient multithreading uses elaborate frame formats and allocation strategy, with compilers customized for them. This paper presents an alternative cost-e ective implementation strategy for mult...

Many embedded systems require hard or soft real-time execution. To ensure the requirements are met, it is necessary to measure the execution time of individual tasks, as well as establish the overall real-time performance of the system. This paper presents a variety of techniques, at both coarse-grain and fine-grain levels, to measure execution time of both user code and operating system overhe...

(i) The quality of the rice, as judged by the fineness of the grain. (ii) The process through which the rice grain has passed in its removal from the paddy. (in) The digestibility of the rice?from seasoning. (iv) Its vitamine content. With regard to quality, the best rice is transplanted rice, reaped during the winter months?the avian crop. Grain of the aus crop is coarse and not of good qualit...

This paper briefly describes the current implementation status of an intelligent information retrieval system, MARIE, that employs natural language processing techniques. Descriptive captions are used to identify photographic images concerning various military projects. The captions are parsed to produce a logical form from which nouns and verbs are extracted to form the primary keywords. User ...

We introduce Callisto-RTS, a parallel runtime system designed for multi-socket shared-memory machines. It supports very fine-grained scheduling of parallel loops— down to batches of work of around 1K cycles. Finegrained scheduling helps avoid load imbalance while reducing the need for tuning workloads to particular machines or inputs. We use per-core iteration counts to distribute work initiall...

Current solutions for providing communication security in network applications allow customization of certain security attributes and techniques, but in limited ways and without the benefit of a single unifying framework. Here, the design of a highly-customizable extensible service called SecComm is described in which attributes such as authenticity, privacy, integrity, and non-repudiation can ...