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Blog: Bringing SYCL to Supercomputers with Celerity

Celerity is an open source project which focuses on providing a way of scaling applications to a cluster of accelerators without having to be an expert in distributed memory programming. In fact, the Celerity API does not make it apparent that a program is running on many nodes at all: There is no notion of MPI ranks or process IDs, and partitioning of work and data is taken care of transparently behind the scenes. Celerity is built on top of SYCL: The API makes it the perfect starting point that hits a sweet spot between cost and power as well as ease of use. From that base, we set out to find the minimal set of extensions required to bring the SYCL API to distributed memory clusters - thus making it relatively easy to migrate an existing SYCL application to Celerity.

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