def test_stft_complex(self, rand_complex_data_gen, num_samps, fs, nperseg):
cpu_sig, gpu_sig = rand_complex_data_gen(num_samps)
_, _, cpu_stft = signal.stft(cpu_sig, fs, nperseg=nperseg)
_, _, gpu_stft = cusignal.stft(gpu_sig, fs, nperseg=nperseg)
gpu_stft = cp.asnumpy(gpu_stft)
assert array_equal(cpu_stft, gpu_stft)
def test_stft_complex(num_samps, fs, nperseg):
cpu_sig = np.random.rand(num_samps) + 1j * np.random.rand(num_samps)
gpu_sig = cp.asarray(cpu_sig)
cf, ct, cpu_stft = signal.stft(cpu_sig, fs, nperseg=nperseg)
gf, gt, gpu_stft = cusignal.stft(gpu_sig, fs, nperseg=nperseg)
gpu_stft = cp.asnumpy(gpu_stft)
assert array_equal(cpu_stft, gpu_stft)
def test_istft_gpu(self, rand_data_gen, gpubenchmark, dtype, num_samps,
fs, nperseg):
cpu_sig, gpu_sig = rand_data_gen(num_samps, 1, dtype)
_, _, cpu_sig = signal.stft(cpu_sig, fs, nperseg=nperseg)
_, _, gpu_sig = cusignal.stft(gpu_sig, fs, nperseg=nperseg)
output = gpubenchmark(self.gpu_version, gpu_sig, fs, nperseg)
key = self.cpu_version(cpu_sig, fs, nperseg)
array_equal(output, key)
def gpu_version(self, sig, fs, nperseg):
with cp.cuda.Stream.null:
out = cusignal.stft(sig, fs, nperseg=nperseg)
cp.cuda.Stream.null.synchronize()
return out