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server : print chat template info

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Georgi Gerganov 2024-03-09 22:04:00 +02:00
parent d894f352bf
commit 77d1ac7e00
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1 changed files with 20 additions and 2 deletions
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examples/server/server.cpp
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@ -2197,7 +2197,8 @@ static void server_print_usage(const char * argv0, const gpt_params & params, co
printf(" -gaw N, --grp-attn-w N set the group attention width to extend context size through self-extend(default: 512), used together with group attention factor `--grp-attn-n`\n");
printf(" --chat-template JINJA_TEMPLATE\n");
printf(" set custom jinja chat template (default: template taken from model's metadata)\n");
printf(" Note: only commonly used templates are accepted, since we don't have jinja parser\n");
printf(" only commonly used templates are accepted:\n");
printf(" https://github.com/ggerganov/llama.cpp/wiki/Templates-supported-by-llama_chat_apply_template\n");
printf("\n");
}
@ -2798,13 +2799,30 @@ int main(int argc, char ** argv) {
const auto model_meta = ctx_server.model_meta();
if (sparams.chat_template.empty()) { // custom chat template is not supplied
// if a custom chat template is not supplied, we will use the one that comes with the model (if any)
if (sparams.chat_template.empty()) {
if (!ctx_server.validate_model_chat_template()) {
LOG_ERROR("The chat template that comes with this model is not yet supported, falling back to chatml. This may cause the model to output suboptimal responses", {});
sparams.chat_template = "chatml";
}
}
// print sample chat example to make it clear which template is used
{
json chat;
chat.push_back({{"role", "system"}, {"content", "You are a helpful assistant"}});
chat.push_back({{"role", "user"}, {"content", "Hello"}});
chat.push_back({{"role", "assistant"}, {"content", "Hi there"}});
chat.push_back({{"role", "user"}, {"content", "How are you?"}});
const std::string chat_example = format_chat(ctx_server.model, sparams.chat_template, chat);
LOG_INFO("chat template", {
{"chat_example", chat_example},
{"built_in", sparams.chat_template.empty()},
});
}
//
// Middlewares
//