I know there is a 128MB limit for a single block of GPU memory on AMD GPU’s. Is there a similar limit on Nvidia GPU’s?
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I know there is a 128MB limit for a single block of GPU memory on AMD GPU’s. Is there a similar limit on Nvidia GPU’s?
On GTX 560
clGetDeviceInforeturns 256MiB for CL_DEVICE_MAX_MEM_ALLOC_SIZE, however I can allocate slightly less than 1GiB. See this thread discussing the issue.On AMD however this limit is enforced. You can raise it by changing GPU_MAX_HEAP_SIZE and GPU_MAX_ALLOC_SIZE environment variables (see this thread).