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Mojo function

compute_log_probabilities_1tok

def compute_log_probabilities_1tok[target: StringSlice[ImmStaticOrigin], levels: Int](output_token_index: Int, lp_logits: ManagedTensorSlice[IOSpec[_, _].Output, static_spec=lp_logits.static_spec], lp_tokens: ManagedTensorSlice[IOSpec[_, _].Output, static_spec=lp_tokens.static_spec], logits: ManagedTensorSlice[IOSpec[_, _].Input, static_spec=logits.static_spec], tokens: ManagedTensorSlice[IOSpec[_, _].Input, static_spec=tokens.static_spec], sampled_tokens: ManagedTensorSlice[IOSpec[_, _].Input, static_spec=sampled_tokens.static_spec], logit_row_offsets: ManagedTensorSlice[IOSpec[_, _].Input, static_spec=logit_row_offsets.static_spec], token_row_offsets: ManagedTensorSlice[IOSpec[_, _].Input, static_spec=token_row_offsets.static_spec], lp_output_offsets: ManagedTensorSlice[IOSpec[_, _].Input, static_spec=lp_output_offsets.static_spec])

Computes log probabilities for a single token position from its logits row.

Parameters:

target (StringSlice[ImmStaticOrigin]): Compilation target string, such as "cpu" or "gpu".
levels (Int): Number of heap levels controlling the top-k width; the output stores 2**levels entries per token. When levels <= 0, only the sampled token's log probability is emitted.

Args:

output_token_index (Int): Global row index into lp_logits and lp_tokens for this output position.
lp_logits (ManagedTensorSlice[IOSpec[_, _].Output, static_spec=lp_logits.static_spec]): Output tensor of shape [num_output_tokens, 2**levels] receiving the log probabilities.
lp_tokens (ManagedTensorSlice[IOSpec[_, _].Output, static_spec=lp_tokens.static_spec]): Output tensor of shape [num_output_tokens, 2**levels] receiving the token ids paired with lp_logits.
logits (ManagedTensorSlice[IOSpec[_, _].Input, static_spec=logits.static_spec]): Input logits ragged by batch, shape [total_rows, vocab_size].
tokens (ManagedTensorSlice[IOSpec[_, _].Input, static_spec=tokens.static_spec]): Previously generated tokens across all batches, ragged.
sampled_tokens (ManagedTensorSlice[IOSpec[_, _].Input, static_spec=sampled_tokens.static_spec]): Most recently sampled token for each batch, used when this position is the last token in its sequence.
logit_row_offsets (ManagedTensorSlice[IOSpec[_, _].Input, static_spec=logit_row_offsets.static_spec]): Per-batch start offsets into the first axis of logits.
token_row_offsets (ManagedTensorSlice[IOSpec[_, _].Input, static_spec=token_row_offsets.static_spec]): Per-batch start offsets into tokens.
lp_output_offsets (ManagedTensorSlice[IOSpec[_, _].Input, static_spec=lp_output_offsets.static_spec]): Per-batch start offsets into the output row axis, mapping each output index to its batch.