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Computers are indispensable to modern human society. Often, computers host multiple programs running simultaneously. However, among those programs, some maybe more time critical than others to users. Consequently, users would hope those time‐critical programs to finish their execution as soon as possible. Generally speaking, the course of program execution includes cooperative operation of CPU, memory,...
Companies and institutions often use web proxy servers to service the multiple requests of the same web pages (or web objects) from users therein to save the network bandwidth and reduce the Internet latency. Web proxy servers usually are geographically close to their clients (users). If web proxy serves have cached valid copies of requested web objects, they can be directly delivered to users. Otherwise,...
The Internet of Things (IoT) has shown its promising future recently. Cloud computing can provide the infrastructure for storing and handling the potentially enormous volume of data generated therein. Consequently, the availability and reliability of cloud data will largely affect the success of IoT. Hadoop is a very popular platform adopted in the community of cloud computing. The Hadoop Distributed...
Cloud computing has become more and more popular nowadays. Both governments and enterprises provide service through the construction of public and private clouds accordingly. Among the platforms used in cloud computing, Hadoop is considered one of the most practical and stable systems. Nevertheless, as with other regular software, Hadoop still needs to rely on the underlying operating system to communicate...
Computers are indispensable to modern human society. Often computers host multiple programs running simultaneously. However, among those programs, some maybe more time-critical than others to users. Consequently, users would hope those time-critical programs to finish their execution as soon as possible. Generally speaking, the course of program execution includes CPU operation and hard disk operation...
As the traffic of Internet dramatically increases in recent years, the proxy server has demonstrated its effectiveness to mitigate the Internet latency. Due to the different characteristics between multimedia and non-multimedia webpage files, more and more proxy servers are dedicated solely to handle multimedia files. Compared with regular webpage files, multimedia files are often transmitted with...
Computer systems often host multiple programs in execution simultaneously. Among those running programs, some may be important and time-critical, which users would expect them to finish their execution as soon as possible. Generally speaking, the course of program execution includes CPU operation and hard disk operation (disk I/O). For the CPU operation, modern computer systems have the ability to...
Computers are indispensable to modern human society. In spite of the tremendous amount of efforts spent on improving the computer software quality, however, software bugs are inevitable. The problems of software bugs could range from minor (such as fonts) to catastrophic (such as mission-critical control programs). There have been different methods proposed by researchers to deal with the software...
As the speed gap between CPU and the secondary storage device will not be narrowing in the foreseeable future, file grouping can be a promising way to reduce the disk I/O latency. The order of sequential access among files observed during the execution of individual programs is very predictable. Based on this idea, we propose a new file grouping model called program-based grouping (PBG). Through the...
The scheduled dataflow (SDF) architecture deviates from current trend of building complex hardware to exploit instruction level parallelism (ILP) by exploring a simpler, yet powerful execution paradigm that is based on dataflow, multithreading and decoupling of memory accesses from execution. A program is partitioned into non-blocking threads and all memory accesses are decoupled from the thread's...
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