future-arch []

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===== Future gem5-gpu Software Architecture Vision =====
Here is a diagram of the future gem5-gpu software architecture.

{{ :future_gem5-gpu_architecture_1_31_2013_-cropped.png?300 |}}

  * In order to more clearly define and connect GPU hardware with specific gem5-gpu programming constructs, we plan to move much of the functionality currently held in the CudaGPU out to a CudaContext class. This class will aggregate the system state associated with running a GPU kernel and will be used for the following functions:
    * Managing GPU memory space page table
    * Interfacing with a copy engine which will copy data into and out of the GPU context’s memory space
    * Storing and managing PTX code and variables for the context
    * Managing the process of interfacing with CPU thread context through blocking
  * Introduction of the CudaContext will require updating the CUDA syscall interface in gem5-gpu (little/no change is expected for libcuda).

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