let save_serialized_precomputation preprocess filename =
 -->   let serialization = Marshal.to_bytes preprocess [] in
    let chan = open_out_bin filename in
    Marshal.to_channel chan serialization [] ;
    close_out_noerr chan

  let load_serialized_precomputation filename =
    let chan = open_in_bin filename in
    Marshal.from_channel chan



[invalid] output_value: abstract value (Custom)