From 6b8312e7979b852f6b6ac9d29cd51fda16c17948 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Johannes=20G=C3=A4=C3=9Fler?= <johannesg@5d6.de>
Date: Thu, 15 Jun 2023 19:06:46 +0200
Subject: [PATCH] Better error when using both LoRA + GPU layers (#1861)

---
 examples/common.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/examples/common.cpp b/examples/common.cpp
index dc69e5373..b47f06273 100644
--- a/examples/common.cpp
+++ b/examples/common.cpp
@@ -412,6 +412,14 @@ bool gpt_params_parse(int argc, char ** argv, gpt_params & params) {
         gpt_print_usage(argc, argv, default_params);
         exit(1);
     }
+
+#ifdef GGML_USE_CUBLAS
+    if (!params.lora_adapter.empty() && params.n_gpu_layers > 0) {
+        fprintf(stderr, "%s: error: the simultaneous use of LoRAs and GPU acceleration is not supported", __func__);
+        exit(1);
+    }
+#endif // GGML_USE_CUBLAS
+
     if (escape_prompt) {
         process_escapes(params.prompt);
     }