Z008 Job Time in IBM Accounting Units

OBSOLETE

Please note that this routine has been obsoleted in CNL 219. Users are advised not to use it any longer and to replace it in older programs. No maintenance for it will take place and it will eventually disappear.
Suggested replacement: None

TIMAL interfaces with the system of any CERN IBM-like machine to obtain the central processor time used by and remaining to the job and then converts these times to CERN IBM accounting seconds.

Currently this unit is one second of IBM 370/168-3 CPU time.

Structure:

SUBROUTINE subprograms
User Entry Names: TIMAD, PTIMAL, TIMAST, TIMAX
External References: Machine dependent

Usage:

    CALL TIMAX(T)

    CALL TIMAL(T)

    CALL TIMAD(T)

    CALL TIMAST(TLIM)

It must be called once (subsequent calls are ignored) before any calls to TIMAX and TIMAL. Before this routine is called TIMAX will return zero and TIMAL will return $999.0\; x$ a multiplicative constant. TLIM is an input floating point value which will be used inside TIMAL as if it were the job time-limit in CERN IBM accounting seconds. The first call to TIMAST also establishes the time origin for subsequent calls to TIMAX and TIMAL.

Accuracy:

See the remarks in DATIME (Z007). A consequence of the 1 second resolution of TIMEL is that TIMAL has a resolution of about 8 secs on the IBM 3090.

Notes:

1. The information returned by these routines is obtained by a system request. On some machines this is expensive in real time, so one should avoid too many calls, to TIMAL in particular.
2. These routines are identical to those in DATIME (Z007) except for a multiplicative constant. These constants are averages over a range of CERN work and may not be valid for an individual job. The current values of these constants are:
   

   Machine	Constant
   IBM 168-3	1.0
   Siemens 7-890	5.0
   IBM 3090	8.0

3. These routines will not work outside the CERN version of the IBM operating system and VM-CMS.

Z009