Module Map_reduce.Config
val create : ?local:int -> ?remote:(_ Remote_executable.t * int) list -> ?cd:string -> redirect_stderr:[ `Dev_null | `File_append of string ] -> redirect_stdout:[ `Dev_null | `File_append of string ] -> unit -> t
Default is to create the same number of local workers as the cores in local machine. All spawned workers will their redirect stdout and stderr to the same file.