Add FP16 and Q8_0 activation initialization methods in State class

Author: orionpapadakis

src/main/java/org/beehive/gpullama3/inference/state/State.java

@@ -3,10 +3,7 @@
 import org.beehive.gpullama3.tensor.standard.FloatTensor;
 import org.beehive.gpullama3.model.Configuration;
 import uk.ac.manchester.tornado.api.types.HalfFloat;
-import uk.ac.manchester.tornado.api.types.arrays.FloatArray;
-import uk.ac.manchester.tornado.api.types.arrays.HalfFloatArray;
-import uk.ac.manchester.tornado.api.types.arrays.IntArray;
-import uk.ac.manchester.tornado.api.types.arrays.TornadoNativeArray;
+import uk.ac.manchester.tornado.api.types.arrays.*;
 
 /**
  * Represents the base state structure used during LLM inference.
@@ -127,6 +124,18 @@ protected static class StateFields {
         public IntArray positionHolder;
         public FloatArray temp, tempFFN, tempLogits;
         public TornadoNativeArray embeddingX;
+
+        public void createActivationFP16(int size) {
+            this.embeddingX = new HalfFloatArray(size);
+        }
+
+        public void createActivationQ8_0(int size) {
+            int blockSize = 32;
+            int Q8_0_BLOCK_BYTES = 34; // 2 bytes scale + 32 bytes quants
+            int blocksNeeded = (size + blockSize - 1) / blockSize;
+            int q8BytesNeeded = blocksNeeded * Q8_0_BLOCK_BYTES;
+            this.embeddingX = new ByteArray(q8BytesNeeded);
+        }
     }
 
     @Override