Abstract
MPICH2 provides a layered architecture to achieve both portability and performance. For implementations of MPI-2 over InfiniBand, it provides the flexibility for researchers at the RDMA channel, CH3 or ADI3 layer. In this paper we analyze the performance and complexity trade-offs associated with implementations at these layers. We describe our designs and implementations, as well as optimizations at each layer. To show the performance impacts of these design schemes and optimizations, we evaluate our implementations with different micro-benchmarks, HPCC and NAS test suite. Our experiments show that although the ADI3 layers adds complexity in implementation, the benefits achieved through optimizations justify moving to the ADI layer to extract the best performance.
This research is supported in part by Department of Energy’s Grant #DE-FC02-01ER25506, National Science Foundation’s grants #CNS-0204429, and #CUR-0311542, and a grant from Intel.
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Huang, W., Santhanaraman, G., Jin, HW., Panda, D.K. (2005). Design Alternatives and Performance Trade-Offs for Implementing MPI-2 over InfiniBand. In: Di Martino, B., Kranzlmüller, D., Dongarra, J. (eds) Recent Advances in Parallel Virtual Machine and Message Passing Interface. EuroPVM/MPI 2005. Lecture Notes in Computer Science, vol 3666. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11557265_27
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DOI: https://doi.org/10.1007/11557265_27
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