CALL FOR PAPERS Special Issue of INFORMATICA on Parallel Computing with Optical Interconnections Communications among processors in a parallel computing system are always the main design issue when a parallel system is built or a parallel algo- rithm is designed. With advances in silicon and Ga-As technologies, pro- cessor speed will soon reach the gigahertz (GHz) range. Traditional metal-based communication technology used in parallel computing systems is becoming a potential bottleneck. This requires either that significant progress need to be made in the traditional interconnects, or that new interconnect technologies, such as optics, be introduced in parallel computing systems. Fiber optic communications offer a combination of high bandwidth, low error probability, and gigabit transmission capacity and have been used exten- sively in wide-area networks. Advances in optical and optoelectronic tech- nologies indicates that they could also be used as interconnects in parallel computers. In fact, many commercial massively parallel computers such as the Cray T3D use optical technology in their communication subsys- tems. Papers in this special issue will be selected to focus on the poten- tial for using optical interconnections in massively parallel processing systems, and their effect on system and algorithm design. The topics of interest include but are not limited to the following: Various optical interconnections, Optical pipelined buses, Multistage interconnection networks, Reconfigurable optical architectures, Embedding and mapping of applications and algorithms, Emulation of different models, Algorithms and applications exploiting parallel optical connections, Data distribution and partitioning, Task scheduling, Performance Evaluation, Embedding of other architectures, New analytical methods for optical interconnections, Scalability analysis, Lower bound, Computational and communication complexities. Publication is scheduled for an issue in 1998. Four copies of complete manuscripts should be sent to one of the guest editors (see address below) by May 15, 1997. All manuscripts must conform to the normal submission requirements of INFORMATICA. Notification of acceptance will be sent by October 15, 1997. Guest Editors of the Special Issue: For North & South America, Australia: Professor Yi Pan, Computer Science Department, The University of Dayton, Dayton, OH 45469-2160, USA, Email: pan@hype.cps.udayton.edu Professor Keqin Li, Dept. of Mathematics and Computer Science, State University of New York, New Paltz, New York 12561-2499, USA, Email: li@mcs.newpaltz.edu For Europe, Africa, Asia: Professor Mounir Hamdi, Department of Computer Science, Hong Kong Univer- sity of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, Email: hamdi@cs.ust.hk