The Experts below are selected from a list of 1674 Experts worldwide ranked by ideXlab platform
T A York - One of the best experts on this subject based on the ideXlab platform.
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a distributed genetic algorithm environment for Unix Workstation clusters
international conference on Genetic algorithms, 1997Co-Authors: D Patrick, Peter Green, T A YorkAbstract:This paper describes the development of the CNIX multiprocessor environment, that is specifically designed for the efficient execution of distributed genetic algorithms on clusters of Unix work stations. CNIX is based around the TCP/IP client-server model and consists of two sets of `C++' libraries functions. The CNIX libraries provide a standard `C++' compiler with the necessary code to establish a multithreaded multiprocessor genetic algorithm environment. The first library migrates the major architectural features of the Transputer, along with selected instructions, to provide hardware independent parallel processing between multiple Workstations and message passing communications across local area networks. The second library supplies a genetic algorithm tool kit to allow application programmers and engineers, with a basic knowledge of `C++', to construct distributed genetic algorithm using a set of simple set of instructions. Results show that CNIX is capable of executing parallel programs over groups of Unix Workstations while achieving a multiprocessor speedup of up to 95%. Performance tests running distributed genetic algorithms across 16 Workstations have demonstrated a speed-up of 15 compared to sequential `C+ +' versions.
Siqveland Elisabeth - One of the best experts on this subject based on the ideXlab platform.
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Simulated testing in mobile datacom systems (GPRS/UMTS) : postgraduate thesis information and communication technology
Høgskolen i Agder, 2000Co-Authors: Arslanagic Aida, Siqveland ElisabethAbstract:The assignment described in this thesis is given by Ericsson AS and gives an evaluation of simulation and testing tools used in their development projects. Since Ericsson wants to change their testing process the task was to evaluate and suggest a solution to how this could be done. In order to make testing available for all developers it was required to run tests independent of hardware. Thus they wanted to simulate the hardware resources. Originally, the intention was to use the test environment used otherwise in Ericsson. This proved to cause many problems because the project became dependent of other developers work, and the instability of the test environment caused delays. In order to avoid these problems the assignment had to be redefined. This was done in collaboration with the supervisor; and it was decided to develop a new testing environment. Several tools had to be used in order to develop an appropriate testing environment. This meant acquiring knowledge about the tools used otherwise for software development at Ericsson. This included among others, protocol development tool, STREAMS, client – server programming using C-language, and programming real-time applications in the Tornado environment (VxWorks and VxSim). The purpose for the assignment was to compare a real-time operating system, VxWorks, and a software package, VxSim, which simulates VxWorks on a Unix Workstation. The test results show that VxSim is the fastest alternative of the two. The tests also reveal that VxSim is unstable and unreliable. On the other hand VxWorks is very reliable and stable. The test results vary depending on the processor type used for testing. VxSim is well suited for testing in the early stages of the project, thus it does not support all the features available in VxWorks. VxWorks and VxSim may very well be used jointly in the development and testing processes
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Simulated testing in mobile datacom systems (GPRS/UMTS) : postgraduate thesis information and communication technology
Agder University College, 2000Co-Authors: Arslanagic Aida, Siqveland ElisabethAbstract:Masteroppgave i informasjons- og kommunikasjonsteknologi 2000 - Høgskolen i Agder, GrimstadThe assignment described in this thesis is given by Ericsson AS and gives an evaluation of simulation and testing tools used in their development projects. Since Ericsson wants to change their testing process the task was to evaluate and suggest a solution to how this could be done. In order to make testing available for all developers it was required to run tests independent of hardware. Thus they wanted to simulate the hardware resources. Originally, the intention was to use the test environment used otherwise in Ericsson. This proved to cause many problems because the project became dependent of other developers work, and the instability of the test environment caused delays. In order to avoid these problems the assignment had to be redefined. This was done in collaboration with the supervisor; and it was decided to develop a new testing environment. Several tools had to be used in order to develop an appropriate testing environment. This meant acquiring knowledge about the tools used otherwise for software development at Ericsson. This included among others, protocol development tool, STREAMS, client – server programming using C-language, and programming real-time applications in the Tornado environment (VxWorks and VxSim). The purpose for the assignment was to compare a real-time operating system, VxWorks, and a software package, VxSim, which simulates VxWorks on a Unix Workstation. The test results show that VxSim is the fastest alternative of the two. The tests also reveal that VxSim is unstable and unreliable. On the other hand VxWorks is very reliable and stable. The test results vary depending on the processor type used for testing. VxSim is well suited for testing in the early stages of the project, thus it does not support all the features available in VxWorks. VxWorks and VxSim may very well be used jointly in the development and testing processes
D Patrick - One of the best experts on this subject based on the ideXlab platform.
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a distributed genetic algorithm environment for Unix Workstation clusters
international conference on Genetic algorithms, 1997Co-Authors: D Patrick, Peter Green, T A YorkAbstract:This paper describes the development of the CNIX multiprocessor environment, that is specifically designed for the efficient execution of distributed genetic algorithms on clusters of Unix work stations. CNIX is based around the TCP/IP client-server model and consists of two sets of `C++' libraries functions. The CNIX libraries provide a standard `C++' compiler with the necessary code to establish a multithreaded multiprocessor genetic algorithm environment. The first library migrates the major architectural features of the Transputer, along with selected instructions, to provide hardware independent parallel processing between multiple Workstations and message passing communications across local area networks. The second library supplies a genetic algorithm tool kit to allow application programmers and engineers, with a basic knowledge of `C++', to construct distributed genetic algorithm using a set of simple set of instructions. Results show that CNIX is capable of executing parallel programs over groups of Unix Workstations while achieving a multiprocessor speedup of up to 95%. Performance tests running distributed genetic algorithms across 16 Workstations have demonstrated a speed-up of 15 compared to sequential `C+ +' versions.
P E Wilson - One of the best experts on this subject based on the ideXlab platform.
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Unix Workstation monitoring system for coal bump research information circular 1993
1993Co-Authors: J P Coughlin, P E WilsonAbstract:The U.S. Bureau of Mines has developed a monitoring system that acquires and analyzes data for use in determining conditions that may precede in coal mines. Based on a Unix Workstation linked to an array of geophones in a working longwall operation, the system captures complete waveforms of microseismic events and simultaneously obtains continuous samples of the voltage levels of each geophone. Event rates and locations are calculated and displayed in real time on the Unix Workstation, which is situated in an underground instrumentation room.
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a Unix Workstation monitoring system for coal bump research
International Conference on Multimedia Information Networking and Security, 1993Co-Authors: J P Coughlin, P E WilsonAbstract:The US Bureau of Mines has developed a monitoring system that acquires and analyzes data for use in determining the conditions that may precede mountain bumps in coal mines. Based on a Unix Workstation linked to an array of geophones in a working longwall operation, the system captures complete waveforms of microseismic events and simultaneously obtains continuous samples of the voltage levels of each geophone. Event rates and locations are calculated and displayed in real time on the Unix Workstation, which is situated in an underground instrumentation room. These results also are transmitted from the Workstation to a display computer near the longwall face. The system runs continuously and has the capability to acquire, analyze, display, and archive microseismic (transient) data and single point data, such as closure and pressure changes, simultaneously. 9 refs., 9 figs.
Arslanagic Aida - One of the best experts on this subject based on the ideXlab platform.
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Simulated testing in mobile datacom systems (GPRS/UMTS) : postgraduate thesis information and communication technology
Høgskolen i Agder, 2000Co-Authors: Arslanagic Aida, Siqveland ElisabethAbstract:The assignment described in this thesis is given by Ericsson AS and gives an evaluation of simulation and testing tools used in their development projects. Since Ericsson wants to change their testing process the task was to evaluate and suggest a solution to how this could be done. In order to make testing available for all developers it was required to run tests independent of hardware. Thus they wanted to simulate the hardware resources. Originally, the intention was to use the test environment used otherwise in Ericsson. This proved to cause many problems because the project became dependent of other developers work, and the instability of the test environment caused delays. In order to avoid these problems the assignment had to be redefined. This was done in collaboration with the supervisor; and it was decided to develop a new testing environment. Several tools had to be used in order to develop an appropriate testing environment. This meant acquiring knowledge about the tools used otherwise for software development at Ericsson. This included among others, protocol development tool, STREAMS, client – server programming using C-language, and programming real-time applications in the Tornado environment (VxWorks and VxSim). The purpose for the assignment was to compare a real-time operating system, VxWorks, and a software package, VxSim, which simulates VxWorks on a Unix Workstation. The test results show that VxSim is the fastest alternative of the two. The tests also reveal that VxSim is unstable and unreliable. On the other hand VxWorks is very reliable and stable. The test results vary depending on the processor type used for testing. VxSim is well suited for testing in the early stages of the project, thus it does not support all the features available in VxWorks. VxWorks and VxSim may very well be used jointly in the development and testing processes
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Simulated testing in mobile datacom systems (GPRS/UMTS) : postgraduate thesis information and communication technology
Agder University College, 2000Co-Authors: Arslanagic Aida, Siqveland ElisabethAbstract:Masteroppgave i informasjons- og kommunikasjonsteknologi 2000 - Høgskolen i Agder, GrimstadThe assignment described in this thesis is given by Ericsson AS and gives an evaluation of simulation and testing tools used in their development projects. Since Ericsson wants to change their testing process the task was to evaluate and suggest a solution to how this could be done. In order to make testing available for all developers it was required to run tests independent of hardware. Thus they wanted to simulate the hardware resources. Originally, the intention was to use the test environment used otherwise in Ericsson. This proved to cause many problems because the project became dependent of other developers work, and the instability of the test environment caused delays. In order to avoid these problems the assignment had to be redefined. This was done in collaboration with the supervisor; and it was decided to develop a new testing environment. Several tools had to be used in order to develop an appropriate testing environment. This meant acquiring knowledge about the tools used otherwise for software development at Ericsson. This included among others, protocol development tool, STREAMS, client – server programming using C-language, and programming real-time applications in the Tornado environment (VxWorks and VxSim). The purpose for the assignment was to compare a real-time operating system, VxWorks, and a software package, VxSim, which simulates VxWorks on a Unix Workstation. The test results show that VxSim is the fastest alternative of the two. The tests also reveal that VxSim is unstable and unreliable. On the other hand VxWorks is very reliable and stable. The test results vary depending on the processor type used for testing. VxSim is well suited for testing in the early stages of the project, thus it does not support all the features available in VxWorks. VxWorks and VxSim may very well be used jointly in the development and testing processes
