Uwe Dralle

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We present a modular toolbox for parallel nite element simulations on distributed memory systems. The library named PadFEM includes a graphical editor for specifying domains with boundary conditions, automatic mesh generation, automatic mesh partitioning and mapping onto the processors of a MIMD-system. The parallel FEM-simulation uses the preconditioned(More)
The Frame Instantiator Tool (FIT), a graphical interface to give concrete values to abstract parameters of general problems is presented. It is designed to be an important part of Frames, an environment for developing applications based on libraries of efficient parallel algorithms. Given an abstract specification of the parameters of a problem (abstract(More)
We p r e s e n t a distributed algorithm for determining optimal concurrent communication ow in arbitrary computer networks. Our scheme is applicable to a wide range of network ow applications in computer science and operations research. As an example, it can be used for determining optimal task migration paths in metacomputing environments , or for(More)
We present a distributed algorithm for determining optimal concurrent communication ow in arbitrary computer networks. Our scheme is applicable to a wide range of network ow applications in computer science and operations research. As an example, it can be used for determining optimal task migration paths in metacomputing environments , or for work-load(More)
Early experiments in migrating task images from one node in a metacomputing environment to another have shown, that it is possible to achieve almost maximum data throughput in LAN networks. With WAN-connected metacomputers however, the time spent in the task migration is not negligible. Here, alternative routing paths must be used concurrently to reduce the(More)
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