def test_null_accumulate(self):
"""Check that accumulating no spans leaves header intact"""
self.shape_settings = [-1, 1, 2]
with bfp.Pipeline() as pipeline:
c_data = blocks.sigproc.read_sigproc([self.fil_file], self.gulp_nframe)
g_data = blocks.copy(c_data, space='cuda')
call_data = CallbackBlock(
g_data, self.check_sequence_before, self.check_data_before)
accumulated = blocks.accumulate(g_data, 1)
call_data = CallbackBlock(
accumulated, self.check_sequence_after, self.check_data_after)
pipeline.run()
b_midres = views.reverse_scale(b_midres, 'fine_time')
b_midres = views.merge_axes(b_midres, 'time', 'fine_time')
b_midres = blocks.copy(b_midres,
space='system',
gulp_nframe=n_gulp_midres)
#blocks.print_header(b_midres)
# Do midres FFT + Detect on GPU
with bf.block_scope(fuse=True, core=4):
b_midres = blocks.copy(b_midres, space='cuda')
b_midres = blocks.FftBlock(b_midres,
axes='fft_window',
axis_labels='freq')
b_midres = blocks.fftshift(b_midres, axes='freq')
b_midres = blocks.detect(b_midres, mode='stokes')
b_midres = blocks.accumulate(b_midres, n_int_midres)
b_midres = blocks.copy(b_midres, space='system')
blocks.print_header(b_midres)
b_midres = views.merge_axes(b_midres, 'channel', 'freq')
b_midres = byip.hdf_writer(b_midres,
shape=[n_t_midres, n_chan_midres, n_pol],
file_ext='midres.h5',
dtype='float32',
core=4)
##############
## LOWRES ##
##############
# Reshape array for lowres FFT