Load balancing HPF programs by migrating virtual processors

The paper explores the integration of load balancing features in the data parallel language, HPF, targeting semi regular applications. We show that the HPF virtual processors are good candidates to be the unit of migration. Then, we compare 3 possible implementations and show that threads provide a good trade-off between efficiency and ease of implementation. We finally describe a preliminary implementation. The experimental results, obtained with the Gaussian elimination with partial pivoting are promising.