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[Bugfix] Generate exactly input_len tokens in benchmark_throughput #9592

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merged 1 commit into from
Oct 23, 2024
Merged

[Bugfix] Generate exactly input_len tokens in benchmark_throughput #9592

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11 changes: 10 additions & 1 deletion benchmarks/benchmark_throughput.py
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Original file line number Diff line number Diff line change
Expand Up @@ -320,7 +320,16 @@ def main(args: argparse.Namespace):
args.tokenizer, trust_remote_code=args.trust_remote_code)
if args.dataset is None:
# Synthesize a prompt with the given input length.
prompt = "hi" * (args.input_len - 1)
# As tokenizer may add additional tokens like BOS, we need to try
# different lengths to get the desired input length.
for i in range(-10, 10):
prompt = "hi " * (args.input_len + i)
tokenized_prompt = tokenizer(prompt).input_ids
if len(tokenized_prompt) == args.input_len:
break
else:
raise ValueError(
f"Failed to synthesize a prompt with {args.input_len} tokens.")
requests = [(prompt, args.input_len, args.output_len)
for _ in range(args.num_prompts)]
else:
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