llama : increase scratch buffer size for 65B (ref #1152)

Temporary solution

llama.cpp

@@ -54,7 +54,7 @@ static const std::map<e_model, size_t> & MEM_REQ_SCRATCH0()
         { MODEL_7B,    512ull * MB },
         { MODEL_13B,   512ull * MB },
         { MODEL_30B,   512ull * MB },
-        { MODEL_65B,   512ull * MB },
+        { MODEL_65B,  1024ull * MB },
     };
     return _MEM_REQ_SCRATCH0;
 }
@@ -65,7 +65,7 @@ static const std::map<e_model, size_t> & MEM_REQ_SCRATCH1()
         { MODEL_7B,    512ull * MB },
         { MODEL_13B,   512ull * MB },
         { MODEL_30B,   512ull * MB },
-        { MODEL_65B,   512ull * MB },
+        { MODEL_65B,  1024ull * MB },
     };
     return _MEM_REQ_SCRATCH1;
 }