cufft执行方式?
本人最近要用到fft,看sdk里的simplecufft例子,现在有个疑问,是不是执行fft变换时只要调用cufftexec2c即可,不需要设置启动kernel,以及block,threadidx等参数?cufftexec2c会自动根据GPU 配置这些线程参数吗?
// CUFFT plan
cufftHandle plan;
cufftSafeCall(cufftPlan1d(&plan, new_size, CUFFT_C2C, 1));
// Transform signal and kernel
cufftSafeCall(cufftExecC2C(plan, (cufftComplex *)d_signal, (cufftComplex *)d_signal, CUFFT_FORWARD));
cufftSafeCall(cufftExecC2C(plan, (cufftComplex *)d_filter_kernel, (cufftComplex *)d_filter_kernel,CUFFT_FORWARD));