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I understand that C++ AMP is accelerated by GPUs that support DirectX 11.
However, my question is, if the compiled C++ AMP program is run on a machine without a DirectX 11 compatible GPU, what happens?
Does it get emulated by some software implementation of DirectCompute?
Does it get executing on the CPU (perhaps using SSE style instructions)?
Or, does it just fail to execute?
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An NVC++ command-line option, -stdpar , is used to enable GPU-accelerated C++ Parallel Algorithms. Lambdas, including generic lambdas, are fully supported in parallel algorithm invocations. No language extensions or non-standard libraries are required to enable GPU acceleration.
Indeed C++ AMP has a CPU fallback (multi-core plus SSE) implementation called WARP (aka "Microsoft Basic Render Driver"): http://www.danielmoth.com/Blog/Running-C-AMP-Kernels-On-The-CPU.aspx
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