diff --git a/examples_ptx/mergeSort/Makefile_cpu b/examples_ptx/mergeSort/Makefile_cpu
new file mode 100644
index 00000000..423c7051
--- /dev/null
+++ b/examples_ptx/mergeSort/Makefile_cpu
@@ -0,0 +1,9 @@
+
+EXAMPLE=radixSort
+CPP_SRC=radixSort.cpp 
+ISPC_SRC=radixSort.ispc
+ISPC_IA_TARGETS=avx1-i32x8
+ISPC_ARM_TARGETS=neon
+#ISPC_FLAGS=-DDEBUG -g
+
+include ../common.mk
diff --git a/examples_ptx/mergeSort/Makefile_gpu b/examples_ptx/mergeSort/Makefile_gpu
new file mode 100644
index 00000000..bc1c1d67
--- /dev/null
+++ b/examples_ptx/mergeSort/Makefile_gpu
@@ -0,0 +1,13 @@
+PROG=radixSort
+ISPC_SRC=radixSort.ispc
+#CU_SRC=radixSort.cu
+CXX_SRC=radixSort.cpp  radixSort.cpp
+PTXCC_REGMAX=64
+
+# LLVM_GPU=1
+NVVM_GPU=1
+
+include ../common_gpu.mk
+
+
+