There are different hardware architectures such as CPU, GPU, FPGAs, AI accelerators, etc. The code written for one architecture can't easily run on another architecture. For example, the code written for CPU won't run on GPU without making some changes. This is one of the problems developers face when they want to migrate their code from CPU to GPU (or FPGAs or AI accelerators). Intel came up with a unified programming model called oneAPI to solve this very same problem. With oneAPI, it doesn't matter which hardware architectures (CPU, GPU, FGPA, or accelerators) or libraries or languages, or frameworks you use, the same code runs on all hardware architectures without any changes and additionally provides performance benefits. "oneAPI is a cross-industry, open, standards-based unified programming model that delivers a common developer experience across accelerator architectures -- for faster application performance, more productivity, and greater innovation."-

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