diff --git a/mobile/src/operators/kernel/fpga/V1/.fetch_kernel.cpp.swp b/mobile/src/operators/kernel/fpga/V1/.fetch_kernel.cpp.swp
new file mode 100644
index 0000000000000000000000000000000000000000..a49df219da80b5418ef845304c9d3619a269a5f3
Binary files /dev/null and b/mobile/src/operators/kernel/fpga/V1/.fetch_kernel.cpp.swp differ
diff --git a/mobile/src/operators/kernel/fpga/V1/fetch_kernel.cpp b/mobile/src/operators/kernel/fpga/V1/fetch_kernel.cpp
index 729fd289c89b94dd0c5f64e17205e388a686ca74..89cfe8f2635c4dc3ea4ebaf8a8466cbb84c723c5 100644
--- a/mobile/src/operators/kernel/fpga/V1/fetch_kernel.cpp
+++ b/mobile/src/operators/kernel/fpga/V1/fetch_kernel.cpp
@@ -80,6 +80,7 @@ void FetchKernel<FPGA, float>::Compute(const FetchParam<FPGA> &param) {
   auto output = &param.Out()->at(col);
   if (input->type() == type_id<float>()) {
     output->ShareDataWith(*input);
+    // output dims  equal to input dim
     output->Resize(input->dims());
     return;
   }