diff --git a/src/devices/cuda/fastllm-cuda.cu b/src/devices/cuda/fastllm-cuda.cu
index fccc2db..5e0947c 100644
--- a/src/devices/cuda/fastllm-cuda.cu
+++ b/src/devices/cuda/fastllm-cuda.cu
@@ -3776,14 +3776,15 @@ bool FastllmCudaHalfAttention(const fastllm::Data &q, const fastllm::Data &k, co
     half beta = __float2half_rn(0.0f), one = __float2half_rn(1.0f), hscale = __float2half_rn(scale);
     if (q1 >= 1024 || (q1 > 1 && q1 != k1 && k1 >= 1024)) {
         int alignQ1 = q1, alignK1 = k1;
+        int part = alignK1;
         bool useFastAttn = getCudaInfos()->hasTensorCore && batch == 1 && (q2 == 128 && v2 == 128) && maskType == 0;
         if (useFastAttn) {
             alignQ1 = ((q1 - 1) / 128 + 1) * 128;
             alignK1 = ((k1 - 1) / 128 + 1) * 128;
+            part = (alignK1 > 8192 ? 8192 : alignK1);
         }
-
-        int part = (alignK1 > 8192 ? 8192 : alignK1);
         half *qk = (half *) FastllmCudaMalloc(alignQ1 * part * sizeof(half));
+
         cudaMemset(qk, 0, alignQ1 * part * sizeof(half));
         auto fastllmCublasHandle = getFastllmCublasHandle();
         cublasStatus_t status;
diff --git a/src/models/basellm.cpp b/src/models/basellm.cpp
index 1151a66..ea0e693 100644
--- a/src/models/basellm.cpp
+++ b/src/models/basellm.cpp
@@ -1125,7 +1125,8 @@ printf("len = %d, spend = %f s. tokens / s = %f\n", (int)total, spend, (float)to
         } else if (dataType == DataType::FLOAT16) {
             AssertInFastLLM(this->model_struct == "chatglm" || 
                             this->model_struct == "llama" ||
-                            this->model_struct == "graph", 
+                            this->model_struct == "graph" ||
+                            this->model_struct == "cogvlm", 
                             this->model_struct + " doesn't support float16");
         } else {
             ErrorInFastLLM("SetDataType Error: datatype should be float32 or float16");
diff --git a/src/models/cogvlm.cpp b/src/models/cogvlm.cpp
index 9fb9312..ca3fa32 100644
--- a/src/models/cogvlm.cpp
+++ b/src/models/cogvlm.cpp
@@ -179,6 +179,7 @@ namespace fastllm {
             int visionLayers = atoi(this->weight.dicts["vision_config.num_hidden_layers"].c_str());
             int visionNumHeads = atoi(this->weight.dicts["vision_config.num_heads"].c_str());
 
+            ToDataType(x, this->dataType);
             for (int i = 0; i < visionLayers; i++) {
                 std::string pre = "model.vision.transformer.layers." + std::to_string(i);
                 int B = x.dims[0], L = x.dims[1];
@@ -231,6 +232,7 @@ namespace fastllm {
                 AddTo(x, mlp);
             }
 
+            ToDataType(x, DataType::FLOAT32);
             Split(x, 1, 1, x.dims[1], y);
             int gridSize = int(sqrt(y.dims[1]) + 1e-9);
             y.Reshape({y.dims[0], gridSize, gridSize, y.dims[2]});
@@ -272,7 +274,8 @@ namespace fastllm {
             startPos = 1;
             endPos = 1;
         }
-        
+
+        ToDataType(x, this->dataType);
         Data &hiddenStates = x;
         Data attenInput, w1, w2, textW2, visionW2, w3;
         Data* sinDataPtr = &sinData;
@@ -460,7 +463,8 @@ namespace fastllm {
         Data norm, logit;
         RMSNorm(*lastHiddenStates, this->weight["model.norm.weight"], rms_norm_eps, norm);
         Linear(norm, this->weight["lm_head.weight"], Data(), logit);
-
+        
+        ToDataType(logit, DataType::FLOAT32);
         std::vector <int> lastRet;
         Data topk;
         TopK(logit, topk, 1);