Testing built-in R2C / C2R FFT-based convolution
...allocating memory
...generating random input data
...creating R2C & C2R FFT plans for 2048 x 2048
...uploading to GPU and padding convolution kernel and input data
...transforming convolution kernel
...running GPU FFT convolution: 1289.075120 MPix/s (3.103000 ms)
...reading back GPU convolution results
...running reference CPU convolution
...comparing the results: rel L2 = 1.308637E-03 (max delta = 1.054192E-01)
TEST FAILED
...shutting down
Testing custom R2C / C2R FFT-based convolution
...allocating memory
...generating random input data
...creating C2C FFT plan for 2048 x 1024
...uploading to GPU and padding convolution kernel and input data
...transforming convolution kernel
...running GPU FFT convolution: 1297.016815 MPix/s (3.084000 ms)
...reading back GPU FFT results
...running reference CPU convolution
...comparing the results: rel L2 = 5.094591E-04 (max delta = 5.422376E-02)
TEST FAILED
...shutting down
Testing updated custom R2C / C2R FFT-based convolution
...allocating memory
...generating random input data
...creating C2C FFT plan for 2048 x 1024
...uploading to GPU and padding convolution kernel and input data
...transforming convolution kernel
...running GPU FFT convolution: 1634.654661 MPix/s (2.447000 ms)
...reading back GPU FFT results
...running reference CPU convolution
...comparing the results: rel L2 = 5.721548E-04 (max delta = 5.010304E-02)
TEST FAILED
...shutting down

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