diff --git a/StgSharp.Mathematics/Numeric/Runtime/MatrixParallel.Publish.cs b/StgSharp.Mathematics/Numeric/Runtime/MatrixParallel.Publish.cs
index 228204a1..3d3b2455 100644
--- a/StgSharp.Mathematics/Numeric/Runtime/MatrixParallel.Publish.cs
+++ b/StgSharp.Mathematics/Numeric/Runtime/MatrixParallel.Publish.cs
@@ -60,7 +60,7 @@ namespace StgSharp.Mathematics.Numeric
             /**/
 
             // Console.WriteLine($"amount of kernels is {count}");
-            ulong payload = 0;
+            long payload = 0;
             int payloadIndex = 0;
             ulong additionalPayload = 0;
             for (int i = 0; i < _numaMeasurements.Length; i++)
@@ -74,13 +74,14 @@ namespace StgSharp.Mathematics.Numeric
                 NumaMeasurement measure = _numaMeasurements[i];
                 ulong numaPayload = measure.ActiveTasks;
                 uint numaActive = measure.ActiveThreadCount;
-                ulong curPayload = Math.Min((numaPayload + additionalPayload + 63) / 64, total) - numaActive;
+                long curPayload = ((long)total) - (((long)(numaPayload + additionalPayload + 63)) / 64);
                 if (curPayload > payload)
                 {
                     payload = curPayload;
                     payloadIndex = i;
                 }
             }
+            L4 cache = _numaBuffer[payloadIndex];
             MatrixParallelThread[] selectedNuma = _numaThreads[payloadIndex];
             throw new NotImplementedException();
         }
diff --git a/StgSharp.Mathematics/Numeric/Runtime/MatrixParallelTask.cs b/StgSharp.Mathematics/Numeric/Runtime/MatrixParallelTask.cs
index ba1dba12..8b613e16 100644
--- a/StgSharp.Mathematics/Numeric/Runtime/MatrixParallelTask.cs
+++ b/StgSharp.Mathematics/Numeric/Runtime/MatrixParallelTask.cs
@@ -42,6 +42,8 @@ namespace StgSharp.Mathematics.Numeric.Runtime
 
     }
 
+    internal unsafe struct MatrixExecutionHandle { }
+
     [StructLayout(LayoutKind.Explicit)]
     internal unsafe struct MatrixParallelTask
     {