Constant STARPU_COMMUTE 

pub const STARPU_COMMUTE: starpu_data_access_mode = 16;

< ::STARPU_COMMUTE can be passed along ::STARPU_W or ::STARPU_RW to express that StarPU can let tasks commute, which is useful e.g. when bringing a contribution into some data, which can be done in any order (but still require sequential consistency against reads or non-commutative writes).

See \ref DataCommute for more details.