dbcsr_mm_sched_init Subroutine

   SUBROUTINE dbcsr_mm_sched_init(this, product_wm, nlayers, keep_product_data)
      !! Initializes a multiplication cycle for new set of C-blocks.
      TYPE(dbcsr_mm_sched_type), INTENT(INOUT)           :: this
      TYPE(dbcsr_work_type), POINTER                     :: product_wm
      INTEGER, OPTIONAL                                  :: nlayers
      LOGICAL, INTENT(IN)                                :: keep_product_data

      CHARACTER(len=*), PARAMETER :: routineN = 'dbcsr_mm_sched_init'

      INTEGER                                            :: handle

      CALL timeset(routineN, handle)

      this%keep_product_data = keep_product_data

      this%product_wm => product_wm

      ! Clearing the product_wm takes too long, we gonna do it later and
      ! return now to allow for MPI to progress.
      ! We just have to remember its datasize, in case it already contains data.
      this%product_wm_orig_datasize = this%product_wm%datasize

      CALL dbcsr_mm_hostdrv_init(this%hostdrv, product_wm)

      IF (use_acc()) &
         CALL dbcsr_mm_accdrv_init(this%accdrv, product_wm, nlayers, keep_product_data)

      CALL timestop(handle)

   END SUBROUTINE dbcsr_mm_sched_init