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Data warehousing applications represent an emergent application arena that requires the processing of relational queries and computations over massive amounts of data. Modern general purpose GPUs are high core count architectures that potentially offer substantial improvements in throughput for these applications. However, there are significant challenges that arise due to the overheads of data movement through the memory hierarchy and between the GPU and host CPU. This paper proposes a set of compiler optimizations to address these challenges. Inspired in part by loop fusion/fission optimizations in the scientific computing community, the authors propose kernel fusion and kernel fission.
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