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POBenchmark of CL_MEM_USE_HOST_PTR and CL_MEM_COPY_HOST_PTR in OpenCL
 

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  1. POBenchmark of CL_MEM_USE_HOST_PTR and CL_MEM_COPY_HOST_PTR in OpenCL
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    1. COhello, are you using a gpu, cpu, or apu device to run the kernel? also, which vendor? does your system have multiple processors (NUMA architecture?)
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    2. COCOPY_HOST_PTR does an implicit copy, but ALLOC_HOST_PTR requires an explicit copy. When you're running your benchmark for ALLOC_HOST_PTR, are you sure you're including the extra step to copy the buffer from host to device? If not, that might explain why it's so much faster.
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    3. COI'm using NVIDIA gpu as the device.
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