diff --git a/build.sbt b/build.sbt
index 627a868..9032fa1 100644
--- a/build.sbt
+++ b/build.sbt
@@ -21,7 +21,7 @@ libraryDependencies ++= Seq(
   "com.typesafe.akka" %% "akka-http-caching" % AkkaHttpVersion,
   "com.typesafe.akka" %% "akka-http-spray-json" % AkkaHttpVersion,
   "ch.qos.logback" % "logback-classic" % LogbackVersion,
-  "org.tensorflow" % "tensorflow-core-platform-gpu" % "0.4.1"
+  "org.tensorflow" % "tensorflow-core-platform" % "1.1.0"
 )
 
 assembly / mainClass := Some("serving.http.HttpServer")
diff --git a/src/main/scala/serving/config/ConfigManager.scala b/src/main/scala/serving/config/ConfigManager.scala
index e05ebb8..3179c9e 100644
--- a/src/main/scala/serving/config/ConfigManager.scala
+++ b/src/main/scala/serving/config/ConfigManager.scala
@@ -7,8 +7,8 @@ object ConfigManager {
   val takeSpinCountDelay : Int =  System.getProperty("takeSpinCountDelay","5").toInt
 
   val topK: Int = System.getProperty("topK","10").toInt
-  val dim: Int = System.getProperty("dim","100").toInt
-  val sample: Int =  System.getProperty("sample","10000").toInt
+  val dim: Int = System.getProperty("dim","1000").toInt
+  val sample: Int =  System.getProperty("sample","10000000").toInt
   val batch: Int =  System.getProperty("batch","16").toInt
   val npyFile: String = System.getProperty("npyFile", "./model/10000-100.npy")
 
diff --git a/src/main/scala/serving/model/CosineSimilarity.scala b/src/main/scala/serving/model/CosineSimilarity.scala
index 5e9a172..df1ece7 100644
--- a/src/main/scala/serving/model/CosineSimilarity.scala
+++ b/src/main/scala/serving/model/CosineSimilarity.scala
@@ -7,12 +7,13 @@ import org.tensorflow.ndarray.Shape
 import org.tensorflow.ndarray.buffer.DataBuffers
 import org.tensorflow.op.Ops
 import org.tensorflow.op.core.{Constant, Placeholder}
+import org.tensorflow.op.nn.TopK
 import org.tensorflow.types.TFloat32
 import serving.config.ConfigManager
 import serving.tensor.TensorFlowProvider
 import serving.tensor.InputTensor
 
-
+import java.nio.{ByteBuffer, ByteOrder}
 import java.nio.file.Paths
 
 final case class Vec(vec: Seq[(String, Array[Float])])
@@ -37,21 +38,47 @@ object CosineSimilarity {
 
   def model(k: Int): Graph = {
 
-    val wArray: Array[Float] = dataVectorNumpyArray
+    //val wArray: Array[Float] = dataVectorNumpyArray
+    //val wArray: Array[Float] = Array.fill(dim * wLength)(0.0f)
+
+    val wArrayLength:Long = dim.toLong * wLength.toLong
 
-    assert(wArray.length == (dim * wLength), f"${wArray.length} != ${dim} * ${wLength} npy file does not match size and dimension and sample length. ")
+    //assert(wArray.length == (dim * wLength), f"${wArray.length} != ${dim} * ${wLength} npy file does not match size and dimension and sample length. ")
 
     val graph = new Graph()
     val tf = Ops.create(graph)
-    val wTensor: Constant[TFloat32] = {
-      val fp32Buf = DataBuffers.ofFloats(wLength * dim).write(wArray, 0, wLength * dim)
-      tf.constant(Shape.of(1, dim, wLength), fp32Buf)
+
+    val wTensor = TFloat32.tensorOf(Shape.of(1, dim, wLength))
+
+
+    val chunkSize:Long = 100000
+    var offset:Long = 0
+
+    while (offset < wArrayLength) {
+      val length = Math.min(chunkSize, wArrayLength - offset)
+      println(length)
+      // 100만 개씩 데이터를 복사하여 바이트버퍼로 변환
+
+      val byteBuffer = ByteBuffer.allocateDirect((length * 4).toInt).order(ByteOrder.nativeOrder())
+      val byteArray = new Array[Byte]((length * 4).toInt)
+      byteBuffer.put(byteArray)
+
+      // wTensor에 기록
+      wTensor.asRawTensor().data().write(byteArray)
+
+      offset += length
+
+      val totalCopied = (100000 * (offset / 100000)) + length
+      println(s"Total copied elements: $totalCopied, wArray length: ${wArrayLength}")
     }
+
+
+
     val vTensor = tf.withName("input").placeholder(classOf[TFloat32],
       Placeholder.shape(Shape.of(-1, dim, 1)))
-    val mul = tf.math.mul(vTensor, wTensor)
+    val mul = tf.math.mul(vTensor, tf.constant(wTensor))
     val cosineSimilarity = tf.reduceSum(mul, tf.array(1))
-    val nnTopK = tf.withName("output").nn.topK(cosineSimilarity, tf.constant(k))
+    val nnTopK = tf.withName("output").nn.topK(cosineSimilarity, tf.constant(k), Array.empty[TopK.Options])
 
     graph
   }
@@ -103,4 +130,8 @@ object CosineSimilarity {
     run(v, k = topK)
   }
 
+  def main(args: Array[String]): Unit = {
+    val a = run(Array(Array.fill(100)(0.0f)),k = 5)
+    a.foreach(x=>x.foreach(println))
+}
 }
diff --git a/src/main/scala/serving/tensor/TensorFlowProvider.scala b/src/main/scala/serving/tensor/TensorFlowProvider.scala
index 09c44a5..2ba68b2 100644
--- a/src/main/scala/serving/tensor/TensorFlowProvider.scala
+++ b/src/main/scala/serving/tensor/TensorFlowProvider.scala
@@ -27,7 +27,7 @@ class TensorFlowProvider(graph: Graph) extends AutoCloseable {
 
     // run. This takes most of the time
     val resultTensors: Map[(String, Int), Tensor] = (runner.run().asScala zip outputs)
-      .map(x => (x._2._1,  x._2._2) -> x._1).toMap
+      .map(x => (x._2._1,  x._2._2) -> x._1).map(x=>(x._1,x._2.getValue)).toMap
 
     //release
     inputTensors.foreach(_.tensor.close())