mp_perf_env_describe Subroutine

   SUBROUTINE mp_perf_env_describe(perf_env, iw)
      TYPE(mp_perf_env_type), POINTER          :: perf_env
      INTEGER, INTENT(IN)                      :: iw

#if defined(__parallel)
      INTEGER                                  :: i
      REAL(KIND=dp)                            :: vol
#endif

      IF (.NOT. ASSOCIATED(perf_env)) THEN
         DBCSR_ABORT("unassociated perf_env : mpiwrap @ mp_perf_env_describe")
      END IF
      IF (perf_env%ref_count < 1) THEN
         DBCSR_ABORT("invalid perf_env%ref_count : mpiwrap @ mp_perf_env_describe")
      END IF
#if defined(__parallel)
      IF (iw > 0) THEN
         WRITE (iw, '( " -", 77X, "-" )')
         WRITE (iw, '( " -", 21X, A, 21X, "-" )') ' DBCSR MESSAGE PASSING PERFORMANCE '
         WRITE (iw, '( " -", 77X, "-" )')
         WRITE (iw, '( 1X, 79("-"))')
         WRITE (iw, '( A, A, A )') ' ROUTINE', '             CALLS ', &
            '     AVE VOLUME [Bytes]'
         DO i = 1, MAX_PERF

            IF (perf_env%mp_perfs(i)%count > 0) THEN
               vol = perf_env%mp_perfs(i)%msg_size/REAL(perf_env%mp_perfs(i)%count, KIND=dp)
               IF (vol < 1.0_dp) THEN
                  WRITE (iw, '(1X,A15,T17,I10)') &
                     ADJUSTL(perf_env%mp_perfs(i)%name), perf_env%mp_perfs(i)%count
               ELSE
                  WRITE (iw, '(1X,A15,T17,I10,T40,F11.0)') &
                     ADJUSTL(perf_env%mp_perfs(i)%name), perf_env%mp_perfs(i)%count, &
                     vol
               END IF
            END IF

         END DO
         WRITE (iw, '( 1X, 79("-"))')
      END IF
#else
      MARK_USED(iw)
#endif
   END SUBROUTINE mp_perf_env_describe