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Add --prompt_file flag to the eagle3 runner #20348

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Add --prompt_file flag to the eagle3 runner #20348

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15 changes: 15 additions & 0 deletions examples/models/eagle3/main.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -75,6 +75,7 @@
#include <cstdint>
#include <cstdio>
#include <cstring>
#include <fstream>
#include <string>
#include <vector>

Expand Down Expand Up @@ -102,6 +103,10 @@ DEFINE_string(model_path, "", "Speculator model.pte path.");
DEFINE_string(data_path, "", "Tensor data (.ptd) path for the CUDA backend.");
DEFINE_string(tokenizer_path, "", "HuggingFace tokenizer.json path.");
DEFINE_string(prompt, "Explain why the sky is blue.", "Prompt text.");
DEFINE_string(
prompt_file,
"",
"Read the prompt text from this file instead of --prompt.");
DEFINE_bool(raw_prompt, false, "Skip the Gemma 4 IT chat template.");
DEFINE_int32(max_new_tokens, 128, "Maximum tokens to generate.");
DEFINE_int32(bos_id, 2, "BOS token id (-1 to skip; Gemma convention: 2).");
Expand Down Expand Up @@ -315,6 +320,16 @@ int main(int argc, char** argv) {
}

std::string prompt_text = FLAGS_prompt;
if (!FLAGS_prompt_file.empty()) {
std::ifstream f(FLAGS_prompt_file);
if (!f) {
ET_LOG(
Error, "Failed to open prompt file: %s", FLAGS_prompt_file.c_str());
return 1;
}
prompt_text = std::string(
std::istreambuf_iterator<char>(f), std::istreambuf_iterator<char>());
}
if (!FLAGS_raw_prompt) {
prompt_text = FLAGS_chat_prefix + prompt_text + FLAGS_chat_suffix;
}
Expand Down
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