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generate: skip unnecessary unmask steps and warn user about it #76

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generate: skip unnecessary unmask steps and warn user about it #76

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4 changes: 4 additions & 0 deletions generate.py
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Original file line number Diff line number Diff line change
Expand Up @@ -70,6 +70,10 @@ def generate(model, prompt, steps=128, gen_length=128, block_length=128, tempera
block_mask_index = (x[:, prompt.shape[1] + num_block * block_length: prompt.shape[1] + (num_block + 1) * block_length:] == mask_id)
num_transfer_tokens = get_num_transfer_tokens(block_mask_index, steps)
for i in range(steps):
# Skip non-informative steps
if num_transfer_tokens[:, i].sum() == 0:
warning('Detected unnecessary unmask steps w/o masked inputs, please lower the total step cnt.')
continue
mask_index = (x == mask_id)
if cfg_scale > 0.:
un_x = x.clone()
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