BriskenW_CPUCorrelators

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The Role of CPU-Based Correlators in Radio Astronomy In this talk I will discuss the role of CPU-based correlators in radio astronomy with a focus on the DiFX Correlator which is in heavy use by Very Long Baseline Interferometry arrays around the world. I will discuss the advantages and disadvantages of these, estimate resource requirements for software correlators in the context of today's and tomorrow's large interferometers, and explain their potential utility in the commissioning of new or upgraded arrays. I will describe some cases in which the flexibility of software correlators has enabled science that would have been otherwise difficult or impossible to achieve.

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