Buffer transfer CPU to GPU very slow

Discussion created by Acen on Feb 15, 2011
Latest reply on Feb 17, 2011 by genaganna

I have measured the time to tranfer a buffer from the CPU to the GPU. It appears that there is a threshold of more than 1 ms whatever the buffer size is. The procedure I use is:

  1. clCreateBuffer
  2. clEnqueueWriteBuffer with option CL_FALSE
  3. clWaitForEvents
  4. clGetEventProfilingInfo

Do I missed something or is it normal to have a 1 ms latency?