concurrent programming Since we are interested in the essential properties of concurrency, we don’t want to bind our concurrent processing entities to specific “lower level” realizations such as threads, processes, object request brokers, MPI, PVM, or any other. Instead, we will use an abstract notion of “processor” adapted from Meyer [Mey97, page 964]: 2 JOURNAL OF OBJECT TECHNOLOGY Submitted ...

This paper describes Millipede, a graphical programming environment for a Transputer-based MIMD multiprocessor system. The environment provides a visual extension to the CSP/Occam programming model. Parallel programs are described as graphs, where the nodes denote parallel processes and the edges denote communication channels between processes. Graphs are constructed using a hierarchical graph ...

Recently, a fully-integrated embedded system becomes popular for portable devices due to the cost reduction and the low-power operation. To reduce the size of the imbedded program, some hardware techniques such as nop-beforeexecution and programmable-delay-slot are introduced in CoreA embedded processor [1]. However, the previous designs using Core-A processor are not user-friendly due to the a...

Computer networks equipment present a bottleneck for further increase of the capacity in the networks. The terminals have problems to keep up with the network speed when using general purpose processors for the protocol processing. We present a novel processor architecture, that works in-line with the data flow and does not use a traditional von Neuman architecture. The program is contained in ...

A new control flow checking scheme is presented, based on assigned-signature checking using a watchdog processor. This scheme is suitable for a multitasking, multiprocessor environment. The hardware overhead is comparatively low because of three reasons: first, hierarchically structured, the scheme uses only a single watchdog processor to monitor multiple processes on multiple processors. Secon...

In this paper, we examine the trade-offs in performance and area due to customizing the datapath and instruction set architecture of a soft VLIW processor implemented in a high-density FPGA. In addition to describing our processor, we describe a number of microarchitectural optimizations we used to reduce the area of the datapath. We also describe the tools we developed to customize, generate, ...

NMRFx Processor is a new program for the processing of NMR data. Written in the Java programming language, NMRFx Processor is a cross-platform application and runs on Linux, Mac OS X and Windows operating systems. The application can be run in both a graphical user interface (GUI) mode and from the command line. Processing scripts are written in the Python programming language and executed so t...

Program profiling helps in characterizing program behavior for a target architecture. We have implemented a retargetable simulation driven code profiler from a high-level processor description language, Sim-nML. A programming interface has been provided for building customized profilers. The retargetability makes the profiling tool independent of the target instruction set.

concurrent programming Since we are interested in the essential properties of concurrency, we don’t want to bind our concurrent processing entities to specific “lower level” realizations such as threads, processes, object request brokers, MPI, PVM, or any other. Instead, we will use an abstract notion of “processor” adapted from Meyer [Mey97, page 964]: A processor is an autonomous thread of co...

—We describe the generation of the simulation environment for the Sandbridge Sandblaster multithreaded processor. The processor model is described using the Sandblaster architecture Description Language (SaDL), which is implemented as python objects. Specific processor implementations of the simulation environment are generated by programmatically calling the python objects. Using just-in-time ...