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Fix chatml fallback for unsupported builtin templates (when --jinja not enabled) #11533

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merged 1 commit into from
Jan 31, 2025
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Fix chatml fallback for unsupported builtin templates (when --jinja not enabled) #11533

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15 changes: 6 additions & 9 deletions examples/server/server.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1804,7 +1804,12 @@ struct server_context {
llama_init_dft.context.reset();
}

chat_templates = common_chat_templates_from_model(model, params_base.chat_template);
if (params_base.chat_template.empty() && !validate_builtin_chat_template(params.use_jinja)) {
LOG_WRN("%s: 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\n", __func__);
chat_templates = common_chat_templates_from_model(model, "chatml");
} else {
chat_templates = common_chat_templates_from_model(model, params_base.chat_template);
}
GGML_ASSERT(chat_templates.template_default.get() != nullptr);

return true;
Expand Down Expand Up @@ -4374,14 +4379,6 @@ int main(int argc, char ** argv) {

LOG_INF("%s: model loaded\n", __func__);

// if a custom chat template is not supplied, we will use the one that comes with the model (if any)
if (params.chat_template.empty()) {
if (!ctx_server.validate_builtin_chat_template(params.use_jinja)) {
LOG_WRN("%s: 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\n", __func__);
params.chat_template = "chatml";
}
}

// print sample chat example to make it clear which template is used
LOG_INF("%s: chat template, chat_template: %s, example_format: '%s'\n", __func__,
ctx_server.chat_templates.template_default->source().c_str(),
Expand Down
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