diff --git a/src/main/java/org/apache/sysds/runtime/controlprogram/caching/MatrixObject.java b/src/main/java/org/apache/sysds/runtime/controlprogram/caching/MatrixObject.java
index 63e632c895c..7d7a7743c35 100644
--- a/src/main/java/org/apache/sysds/runtime/controlprogram/caching/MatrixObject.java
+++ b/src/main/java/org/apache/sysds/runtime/controlprogram/caching/MatrixObject.java
@@ -35,6 +35,7 @@
 import org.apache.sysds.hops.fedplanner.FTypes.FType;
 import org.apache.sysds.lops.Lop;
 import org.apache.sysds.runtime.DMLRuntimeException;
+import org.apache.sysds.runtime.compress.CompressedMatrixBlock;
 import org.apache.sysds.runtime.controlprogram.ParForProgramBlock.PDataPartitionFormat;
 import org.apache.sysds.runtime.controlprogram.context.SparkExecutionContext;
 import org.apache.sysds.runtime.controlprogram.federated.FederatedRange;
@@ -592,6 +593,18 @@ protected MatrixBlock reconstructByLineage(LineageItem li) throws IOException {
 			.acquireReadAndRelease();
 	}
 
+	@Override 
+	public boolean isCompressed(){
+		if(super.isCompressed())
+			return true;
+		else if(_partitionInMemory instanceof CompressedMatrixBlock){
+			setCompressedSize(_partitionInMemory.estimateSizeInMemory());
+			return true;
+		}
+		else
+			return false;
+	}
+
 	@Override
 	public String toString(){
 		StringBuilder sb = new StringBuilder(super.toString());
diff --git a/src/main/java/org/apache/sysds/runtime/instructions/cp/AggregateBinaryCPInstruction.java b/src/main/java/org/apache/sysds/runtime/instructions/cp/AggregateBinaryCPInstruction.java
index c17fcb0ad40..4e40d62f4a9 100644
--- a/src/main/java/org/apache/sysds/runtime/instructions/cp/AggregateBinaryCPInstruction.java
+++ b/src/main/java/org/apache/sysds/runtime/instructions/cp/AggregateBinaryCPInstruction.java
@@ -61,39 +61,36 @@ public static AggregateBinaryCPInstruction parseInstruction(String str) {
 		CPOperand in2 = new CPOperand(parts[2]);
 		CPOperand out = new CPOperand(parts[3]);
 		int k = Integer.parseInt(parts[4]);
-		AggregateBinaryOperator aggbin = InstructionUtils.getMatMultOperator(k);
+		AggregateBinaryOperator op = InstructionUtils.getMatMultOperator(k);
 		if(numFields == 6) {
-			boolean isLeftTransposed = Boolean.parseBoolean(parts[5]);
-			boolean isRightTransposed = Boolean.parseBoolean(parts[6]);
-			return new AggregateBinaryCPInstruction(aggbin,
-				in1, in2, out, opcode, str, isLeftTransposed, isRightTransposed);
+			boolean lt = Boolean.parseBoolean(parts[5]);
+			boolean rt = Boolean.parseBoolean(parts[6]);
+			return new AggregateBinaryCPInstruction(op, in1, in2, out, opcode, str, lt, rt);
 		}
-		return new AggregateBinaryCPInstruction(aggbin, in1, in2, out, opcode, str);
+		return new AggregateBinaryCPInstruction(op, in1, in2, out, opcode, str);
 	}
 
 	@Override
 	public void processInstruction(ExecutionContext ec) {
+		MatrixBlock matBlock1 = ec.getMatrixInput(input1.getName());
+		MatrixBlock matBlock2 = ec.getMatrixInput(input2.getName());
 		// check compressed inputs
-		final boolean comp1 = ec.getMatrixObject(input1.getName()).isCompressed();
-		final boolean comp2 = ec.getMatrixObject(input2.getName()).isCompressed();
+		final boolean comp1 = matBlock1 instanceof CompressedMatrixBlock;
+		final boolean comp2 = matBlock2 instanceof CompressedMatrixBlock;
+
 		if(comp1 || comp2)
-			processCompressedAggregateBinary(ec, comp1, comp2);
+			processCompressedAggregateBinary(ec, matBlock1, matBlock2, comp1, comp2);
 		else if(transposeLeft || transposeRight)
-			processTransposedFusedAggregateBinary(ec);
+			processTransposedFusedAggregateBinary(ec, matBlock1, matBlock2);
 		else
-			processNormal(ec);
-	}
+			processNormal(ec, matBlock1, matBlock2);
 
-	private void processNormal(ExecutionContext ec) {
-		// get inputs
-		MatrixBlock matBlock1 = ec.getMatrixInput(input1.getName());
-		MatrixBlock matBlock2 = ec.getMatrixInput(input2.getName());
+	}
 
+	private void processNormal(ExecutionContext ec, MatrixBlock matBlock1, MatrixBlock matBlock2) {
 		// compute matrix multiplication
 		AggregateBinaryOperator ab_op = (AggregateBinaryOperator) _optr;
-		MatrixBlock ret;
-
-		ret = matBlock1.aggregateBinaryOperations(matBlock1, matBlock2, new MatrixBlock(), ab_op);
+		MatrixBlock ret = matBlock1.aggregateBinaryOperations(matBlock1, matBlock2, new MatrixBlock(), ab_op);
 
 		// release inputs/outputs
 		ec.releaseMatrixInput(input1.getName());
@@ -101,9 +98,9 @@ private void processNormal(ExecutionContext ec) {
 		ec.setMatrixOutput(output.getName(), ret);
 	}
 
-	private void processTransposedFusedAggregateBinary(ExecutionContext ec) {
-		MatrixBlock matBlock1 = ec.getMatrixInput(input1.getName());
-		MatrixBlock matBlock2 = ec.getMatrixInput(input2.getName());
+	private void processTransposedFusedAggregateBinary(ExecutionContext ec, MatrixBlock matBlock1,
+		MatrixBlock matBlock2) {
+
 		// compute matrix multiplication
 		AggregateBinaryOperator ab_op = (AggregateBinaryOperator) _optr;
 		MatrixBlock ret;
@@ -127,9 +124,9 @@ private void processTransposedFusedAggregateBinary(ExecutionContext ec) {
 		ec.setMatrixOutput(output.getName(), ret);
 	}
 
-	private void processCompressedAggregateBinary(ExecutionContext ec, boolean c1, boolean c2) {
-		MatrixBlock matBlock1 = ec.getMatrixInput(input1.getName());
-		MatrixBlock matBlock2 = ec.getMatrixInput(input2.getName());
+	private void processCompressedAggregateBinary(ExecutionContext ec, MatrixBlock matBlock1, MatrixBlock matBlock2,
+		boolean c1, boolean c2) {
+
 		// compute matrix multiplication
 		AggregateBinaryOperator ab_op = (AggregateBinaryOperator) _optr;
 		MatrixBlock ret;