OpenCL autocorrelation kernel?

The code is correct. As far as I know, that should run fine and give corret results.

The code is correct. As far as I know, that should run fine and give corret results. Barrier(CLK_GLOBAL_MEM_FENCE); is not needed.

You'll get more speed without that sentence. Your problem should be outside the kernel, check that you a re passing correctly the input, and you are taking out of GPU the correct data. BTW, I supose you are using a double precision suported GPU as you are doing double calcs.

Check that you are passing also double values. Remember you CAN't point a float pointer to a double value, and viceversa. That will give you wrong results.

Yes I noticed that the BARRIER is not required in this case. Thank you for pointing me to the datatype. – Sayan May 26 at 5:06.

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