diff --git a/Distribute_computing/GridDynamics_plugins/CalculateFitness.vb b/Distribute_computing/GridDynamics_plugins/CalculateFitness.vb
index e671265..0ed3c10 100644
--- a/Distribute_computing/GridDynamics_plugins/CalculateFitness.vb
+++ b/Distribute_computing/GridDynamics_plugins/CalculateFitness.vb
@@ -1,7 +1,9 @@
 Imports System.IO
 Imports System.Runtime.CompilerServices
+Imports System.Threading
 Imports Microsoft.VisualBasic.ApplicationServices.Plugin
 Imports Microsoft.VisualBasic.ComponentModel.DataSourceModel
+Imports Microsoft.VisualBasic.Language
 Imports Microsoft.VisualBasic.MachineLearning.Darwinism.Models
 Imports Microsoft.VisualBasic.MachineLearning.Darwinism.NonlinearGridTopology
 Imports Microsoft.VisualBasic.Net.Http
@@ -9,10 +11,15 @@ Imports Microsoft.VisualBasic.Parallel.Tasks
 Imports Microsoft.VisualBasic.Serialization.JSON
 Imports sciBASIC.ComputingServices.TaskHost
 
+Public Structure SlaveTask
+    Dim output As String
+    Dim task As AsyncHandle(Of Integer)
+End Structure
+
 Public Module CalculateFitness
 
     <Plugin("GA/multiple_process")>
-    Public Function MultipleProcessParallel(comparator As FitnessPool(Of Genome), source As IEnumerable(Of Genome)) As IEnumerable(Of NamedValue(Of Double))
+    Public Iterator Function MultipleProcessParallel(comparator As FitnessPool(Of Genome), source As IEnumerable(Of Genome)) As IEnumerable(Of NamedValue(Of Double))
         Dim individuals As Genome() = source.ToArray
         Dim partitionSize = individuals.Length / App.CPUCoreNumbers
         Dim partitions = individuals.Split(partitionSize)
@@ -20,17 +27,53 @@ Public Module CalculateFitness
         ' 在这里folk出多条进程进行并行计算
         ' 这个方法可以极大的提升程序在Linux平台上面的计算效率
         Dim compute As [Delegate] = New Func(Of String, String, NamedValue(Of Double)())(AddressOf SlaveProcess)
-        Dim endPoint As String = Base64Codec.Base64String(InvokeInfo.CreateObject(compute, {}).GetJson)
         Dim slave = CLI.thinking.FromEnvironment(App.HOME)
-        Dim folks As New List(Of AsyncHandle(Of Integer))
+        Dim folks As New List(Of SlaveTask)
         Dim trainingSet = DirectCast(comparator.evaluateFitness, Environment) _
             .GetTrainingSet() _
             .writeMemory
 
         For Each block As Genome() In partitions
             ' 将数据写入内存
-            Dim inputs = block.Select(Function(g) g.CreateSnapshot())
+            Dim inputs As String = block _
+                .Select(Function(g) g.CreateSnapshot()) _
+                .ToArray _
+                .writeMemory
+            Dim application = Base64Codec.Base64String(InvokeInfo.CreateObject(compute, {inputs, trainingSet}).GetJson)
+            Dim output = inputs _
+                .Select(Function(null)
+                            Return New NamedValue(Of Double) With {
+                                .Name = New String("-"c, 32),
+                                .Value = 0,
+                                .Description = .Name
+                            }
+                        End Function) _
+                .ToArray _
+                .writeMemory
+
+            folks += New SlaveTask With {
+                .output = output,
+                .task = New AsyncHandle(Of Integer)(Function() slave.Slave(application, output)).Run
+            }
         Next
+
+        Do While folks > 0
+            Dim success = folks.FirstOrDefault(Function(folk) folk.task.IsCompleted)
+
+            If success.output Is Nothing Then
+                Thread.Sleep(1)
+                Continue Do
+            End If
+
+            Using reader As New StreamReader(CommandLine.OpenForRead(success.output))
+                Dim result = reader.ReadToEnd
+                Dim dataset = result.LoadJSON(Of NamedValue(Of Double)())
+
+                For Each fitness As NamedValue(Of Double) In dataset
+                    Yield fitness
+                Next
+            End Using
+        Loop
     End Function
 
     <Extension>
diff --git a/Distribute_computing/GridDynamics_plugins/thinking.vb b/Distribute_computing/GridDynamics_plugins/thinking.vb
index 242604c..be217cb 100644
--- a/Distribute_computing/GridDynamics_plugins/thinking.vb
+++ b/Distribute_computing/GridDynamics_plugins/thinking.vb
@@ -37,41 +37,40 @@ Imports Microsoft.VisualBasic.ApplicationServices
 Namespace CLI
 
 
-''' <summary>
-''' thinking.CLI
-''' </summary>
-'''
-Public Class thinking : Inherits InteropService
+    ''' <summary>
+    ''' thinking.CLI
+    ''' </summary>
+    '''
+    Public Class thinking : Inherits InteropService
 
-    Public Const App$ = "thinking.exe"
+        Public Const App$ = "thinking.exe"
 
-    Sub New(App$)
-        MyBase._executableAssembly = App$
-    End Sub
+        Sub New(App$)
+            MyBase._executableAssembly = App$
+        End Sub
 
-     <MethodImpl(MethodImplOptions.AggressiveInlining)>
-    Public Shared Function FromEnvironment(directory As String) As thinking
-          Return New thinking(App:=directory & "/" & thinking.App)
-     End Function
+        <MethodImpl(MethodImplOptions.AggressiveInlining)>
+        Public Shared Function FromEnvironment(directory As String) As thinking
+            Return New thinking(App:=directory & "/" & thinking.App)
+        End Function
 
-''' <summary>
-''' ```
-''' /slave /application &lt;json_base64> /arguments &lt;memory_mapfile> /out &lt;memory_mapfile>
-''' ```
-''' Program running in slave mode, apply for the multiple-process parallel.
-''' </summary>
-'''
-Public Function Slave(application As String, arguments As String, out As String) As Integer
-    Dim CLI As New StringBuilder("/slave")
-    Call CLI.Append(" ")
-    Call CLI.Append("/application " & """" & application & """ ")
-    Call CLI.Append("/arguments " & """" & arguments & """ ")
-    Call CLI.Append("/out " & """" & out & """ ")
-     Call CLI.Append("/@set --internal_pipeline=TRUE ")
+        ''' <summary>
+        ''' ```
+        ''' /slave /application &lt;invokeinfo/json_base64> /out &lt;memory_mapfile>
+        ''' ```
+        ''' Program running in slave mode, apply for the multiple-process parallel.
+        ''' </summary>
+        '''
+        Public Function Slave(application As String, out As String) As Integer
+            Dim CLI As New StringBuilder("/slave")
+            Call CLI.Append(" ")
+            Call CLI.Append("/application " & """" & application & """ ")
+            Call CLI.Append("/out " & """" & out & """ ")
+            Call CLI.Append("/@set --internal_pipeline=TRUE ")
 
 
-    Dim proc As IIORedirectAbstract = RunDotNetApp(CLI.ToString())
-    Return proc.Run()
-End Function
-End Class
+            Dim proc As IIORedirectAbstract = RunDotNetApp(CLI.ToString())
+            Return proc.Run()
+        End Function
+    End Class
 End Namespace