| c--------------------------------------------------------------------- |
| c--------------------------------------------------------------------- |
| |
| subroutine timer_clear(n) |
| |
| c--------------------------------------------------------------------- |
| c--------------------------------------------------------------------- |
| |
| implicit none |
| integer n |
| |
| double precision start(64), elapsed(64) |
| common /tt/ start, elapsed |
| |
| elapsed(n) = 0.0 |
| return |
| end |
| |
| |
| c--------------------------------------------------------------------- |
| c--------------------------------------------------------------------- |
| |
| subroutine timer_start(n) |
| |
| c--------------------------------------------------------------------- |
| c--------------------------------------------------------------------- |
| |
| implicit none |
| external elapsed_time |
| double precision elapsed_time |
| integer n |
| double precision start(64), elapsed(64) |
| common /tt/ start, elapsed |
| |
| start(n) = elapsed_time() |
| |
| return |
| end |
| |
| |
| c--------------------------------------------------------------------- |
| c--------------------------------------------------------------------- |
| |
| subroutine timer_stop(n) |
| |
| c--------------------------------------------------------------------- |
| c--------------------------------------------------------------------- |
| |
| implicit none |
| external elapsed_time |
| double precision elapsed_time |
| integer n |
| double precision start(64), elapsed(64) |
| common /tt/ start, elapsed |
| double precision t, now |
| now = elapsed_time() |
| t = now - start(n) |
| elapsed(n) = elapsed(n) + t |
| |
| return |
| end |
| |
| |
| c--------------------------------------------------------------------- |
| c--------------------------------------------------------------------- |
| |
| double precision function timer_read(n) |
| |
| c--------------------------------------------------------------------- |
| c--------------------------------------------------------------------- |
| |
| implicit none |
| integer n |
| double precision start(64), elapsed(64) |
| common /tt/ start, elapsed |
| |
| timer_read = elapsed(n) |
| return |
| end |
| |
| |
| c--------------------------------------------------------------------- |
| c--------------------------------------------------------------------- |
| |
| double precision function elapsed_time() |
| |
| c--------------------------------------------------------------------- |
| c--------------------------------------------------------------------- |
| |
| implicit none |
| |
| double precision t |
| |
| c This function must measure wall clock time, not CPU time. |
| c Since there is no portable timer in Fortran (77) |
| c we call a routine compiled in C (though the C source may have |
| c to be tweaked). |
| call wtime(t) |
| c The following is not ok for "official" results because it reports |
| c CPU time not wall clock time. It may be useful for developing/testing |
| c on timeshared Crays, though. |
| c call second(t) |
| |
| elapsed_time = t |
| |
| return |
| end |
| |
