```
3) (Optional) Assign a specific backend to operations
``` c
- // Use acl_neon backend for CONV_2D and acl_cl for otherwise.
- // Note that defalut backend is acl_cl
+ // Use 'acl_neon' backend for CONV_2D and 'cpu' for otherwise.
+ // Note that defalut backend is 'cpu'.
nnfw_set_op_backend(session, "CONV_2D", "acl_neon");
```