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- W2000428954 abstract "Hybrid nodes containing GPUs are rapidly becoming the norm in parallel machines. We have conducted some experiments regarding how to plug GPU-enabled computational kernels into PSBLAS, a MPI-based library specifically geared towards sparse matrix computations. In this paper, we present our findings on which strategies are more promising in the quest for the optimal compromise among raw performance, speedup, software maintainability, and extensibility. We consider several solutions to implement the data exchange with the GPU focusing on the data access and transfer, and present an experimental evaluation for a cluster system with up to two GPUs per node. In particular, we compare the pinned memory and the Open-MPI approaches, which are the two most used alternatives for multi-GPU communication in a cluster environment. We find that OpenMPI turns out to be the best solution for large data transfers, while the pinned memory approach is still a good solution for small transfers between GPUs." @default.
- W2000428954 created "2016-06-24" @default.
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- W2000428954 date "2014-07-01" @default.
- W2000428954 modified "2023-09-25" @default.
- W2000428954 title "Sparse matrix computations on clusters with GPGPUs" @default.
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- W2000428954 doi "https://doi.org/10.1109/hpcsim.2014.6903665" @default.
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