dc_clock Module Reference

Monitor of CPU TIME. More...

Data Types
type	clock
interface	dcclockcreate
interface	dcclockclose
interface	dcclockstart
interface	dcclockstop
interface	dcclockputline
interface	dcclockget
interface	dcclockevalsec
interface	dcclocktochar
interface	dcclockresult
interface	operator(+)
interface	operator(-)
interface	dcclocksetname
interface	dcclockpredict
interface	create
interface	close
interface	start
interface	stop
interface	putline
interface	get
interface	evalsec
interface	tochar
interface	result
interface	set_name
interface	predict

Detailed Description

Monitor of CPU TIME.

Author

Yasuhiro MORIKAWA

Copyright

Copyright (C) GFD Dennou Club, 2006-2026. All rights reserved.
License is BSD-2-Clause. see COPYRIGHT in detail

Measures and displays the CPU time consumed by program processing.

Procedures List

Procedure	Description
DCClockCreate	Initialize CLOCK type variable
DCClockStart	Start measurement
DCClockStop	Pause measurement
DCClockClose	Finalize CLOCK type variable
DCClockGet	Get CPU time (in seconds)
DCClockEvalSec	Get CPU time (in seconds) as function
DCClockToChar	Convert CPU time to formatted string
DCClockPutLine	Display CLOCK variable information
DCClockResult	Display comprehensive CPU time information
DCClockPredict	Display predicted CPU time and date to completion
DCClockSetName	Reset name
operator(+)	Addition (between CLOCK types)
operator(-)	Subtraction (between CLOCK types)

Usage

First, define a CLOCK type variable and initialize it with DCClockCreate. Call DCClockStart at the measurement start point in your program, and call DCClockStop at the point to pause measurement. Display elapsed time with DCClockResult. Use DCClockPredict to display estimated remaining CPU time.

Note

CPU time measurement uses the cpu_time intrinsic subroutine (introduced in Fortran 95). Whether the measured CPU time is system CPU time, user CPU time, or the sum of both depends on the implementation.