fix(llama.cpp): Use separate switch clause for granite in llm_load_hparams

Branch: GraniteLM

Signed-off-by: Gabe Goodhart <[email protected]>

Author: gabe-l-hart

src/llama.cpp

@@ -5438,7 +5438,6 @@ static void llm_load_hparams(
     // arch-specific KVs
     switch (model.arch) {
         case LLM_ARCH_LLAMA:
-        case LLM_ARCH_GRANITE:
             {
                 ml.get_key(LLM_KV_ATTENTION_LAYERNORM_RMS_EPS, hparams.f_norm_rms_eps);
 
@@ -5455,20 +5454,13 @@ static void llm_load_hparams(
                         // granite uses a vocab with len 49152
                         case 32: model.type = hparams.n_vocab == 49152 ? e_model::MODEL_3B : (hparams.n_vocab < 40000 ? e_model::MODEL_7B : e_model::MODEL_8B); break;
                         case 36: model.type = e_model::MODEL_8B; break; // granite
-                        case 40: model.type = (hparams.n_vocab == 49152 || hparams.n_vocab == 49156) ? e_model::MODEL_3B : e_model::MODEL_13B; break;
+                        case 40: model.type = e_model::MODEL_13B; break;
                         case 48: model.type = e_model::MODEL_34B; break;
                         case 60: model.type = e_model::MODEL_30B; break;
                         case 80: model.type = hparams.n_head() == hparams.n_head_kv() ? e_model::MODEL_65B : e_model::MODEL_70B; break;
                         default: model.type = e_model::MODEL_UNKNOWN;
                     }
                 }
-                // Extra multipliers for Granite architecture
-                if (model.arch == LLM_ARCH_GRANITE) {
-                    ml.get_key(LLM_KV_LOGIT_SCALE, hparams.f_logit_scale);
-                    ml.get_key(LLM_KV_RESIDUAL_SCALE, hparams.f_residual_scale);
-                    ml.get_key(LLM_KV_EMBEDDING_SCALE, hparams.f_embedding_scale);
-                    ml.get_key(LLM_KV_ATTENTION_SCALE, hparams.f_attention_scale);
-                }
             } break;
         case LLM_ARCH_MINICPM:
             {
@@ -6059,6 +6051,20 @@ static void llm_load_hparams(
                     default: model.type = e_model::MODEL_UNKNOWN;
                 }
             } break;
+        case LLM_ARCH_GRANITE:
+            {
+                ml.get_key(LLM_KV_ATTENTION_LAYERNORM_RMS_EPS, hparams.f_norm_rms_eps);
+                ml.get_key(LLM_KV_LOGIT_SCALE, hparams.f_logit_scale);
+                ml.get_key(LLM_KV_RESIDUAL_SCALE, hparams.f_residual_scale);
+                ml.get_key(LLM_KV_EMBEDDING_SCALE, hparams.f_embedding_scale);
+                ml.get_key(LLM_KV_ATTENTION_SCALE, hparams.f_attention_scale);
+
+                switch (hparams.n_layer) {
+                    case 40: model.type = e_model::MODEL_3B; break;
+                    // Add additional layer/vocab/etc checks here for other model sizes
+                    default: model.type = e_model::MODEL_UNKNOWN;
+                }
+            } break;
         default: (void)0;
     }