Yoshitaka Maekawa

Distributed computing for CO laser simulation

A new simulation code of CO laser has been developed for the recent distributed environment. The partial simulation code is transferred from the server and processed by the clients. The Java language which is independent on computer variation is introduced into the system description.

Flexible laser simulator constructed in the integrated information processing environment

Execution, transfer, storage and display of laser simulation have been improved. The technology of virtual machine has been introduced to integrate different hardware and software environments. The same binary code for laser simulation is executed in the integrated environments.

Improvement of simulation computing for discharge exited gas lasers

Simulation for discharge exited gas flow lasers has been improved. The simulation codes are developed and executed by high performance programming technique and corresponding computer systems. The simulation performances are much superior to those by previous technique and systems.

Simulation for discharge excited gas mixture executed by cellular phones

Simulation by cellular phones has been developed for discharge excited gas mixture. The simulation codes suitable for relatively small size of internal memories are described in Java programming language and executed by cellular phones.

Implementation of simulation codes for gas flow CO lasers by the combination of server-side and client-side processing

New simulation code has been developed for gas flow CO lasers by the combined computing technique of server-side and client-side processing. The input and output interfaces are processed on the client-side and numerical calculations are processed on the server-side.

PDA simulator for the power distribution analyses of discharge-excited gaseous media

Compact programs have been implemented to the information devices of PDA, personal digital assistants, in order to analyze the power distribution of discharge excited gaseous media. The simulation codes are cross-developed between Macintosh computers and PDA.

Comprehensive computer simulation on fundamental-band and first-overtone carbon monoxide lasers

Computer simulation codes for first-overtone CO laser have been developed. The codes are designed to be executed in distributed computing environment. Performance characteristics have been analyzed and compared with those of fundamental- band CO laser.

Near fine grain parallel processing of circuit simulation using direct method

This paper proposes a parallel processing scheme of electronic circuit simulation using the direct method and evaluates the performance of the scheme on a multiprocessor system named OSCAR (Optimally SCheduled Advanced MultiprocessoR) with centralized shared memory, distributed shared memory and local memory. A special purpose compiler is used to realize efficient near fine grain parallel processing of circuit simulation on an actual multiprocessor system. The compiler automatically generates a circuit simulation program from SPICE format input data. The compiler decomposes the program into tasks, analyzes data dependencies among the tasks, schedules the tasks and generates optimized parallel machine code. In the parallel machine code generation process, a different machine code for each processor, which consists of task codes, data transfer codes and synchronization codes, is generated by using static scheduling results.

Mutual utilization of simulation for high power application in the cloud computing environment

The simulation for high power application has been executed. The simulation has done not by the local computer but in the “cloud” computing environment. Now, the authors apply the cloud computing environment to the high power simulation. The details will be presented in the conference.

Numerical analysis of high power gas laser accelerated by Xgrid computing technology

The performance of high power gas laser has been analyzed. The numerical analysis has been executed not by a single computer but by the several Macintosh computers combined by Xgrid technology. The total computing power increases in proportion to the number of computers.