SAMTK: scalable adaptive multicast toolkit is a toolkit to bridge the gap between network researchers and application developers in the field of multi-point communication. SAMTK includes a Qt based GUI that ensures a single source multi-platform use (Linux, FreeBSD, Windows and MacOS). It provides interfaces for network plugins used by one-to-many network sockets and a simple application programming interface for application developers to develop multi-point communication applications quite easily. ALR: application layer router is a router which parses UDP packets and does a lookup in its internal forwarding table to duplicate and deliver the packets to multiple destinations. It provides NAT traversal function by using a singe UDP port both for session registration and packet delivery. The demo shows the feasibility of NAT free 3D video conferencing using application layer router and the ease of development of video conferencing applications using SAMTK.

A parallel processing scheme and software architecture of SMASH, a parallel processing system for supporting a wide variety of database applications is presented. The main feature of this system is that functional programming concepts are applied to define new database operations and data types and to exploit parallelism inherent in an arbitrary set of database operations. A primitive set (SMASH primitive set) of the software architecture is presented that defines an abstract machine interface between high-level database languages and general-purpose hardware systems for parallel processing. The primitive set is used to implement functional computation systems for executing arbitrary database operations in parallel. A previously proposed stream-oriented parallel processing scheme for relational database operations is extended to support more complex database operations which deal with complex data structures. Several experimental results of parallel processing for database operations are shown to clarify feasibility of the proposed architecture.>