gpss_manual

DEPART Process_Time ;Record length of

; process

TABULATE Transit ;Add wait + process ; time to Transit ; Table

RELEASE Facility1 ;Give up 1st Facility ADVANCE 20 ;Delay time for Fac 2&3 RELEASE Facility2 ;Give up 2nd Facility

ADVANCE 10 ;Extra delay time-Fac 3 RELEASE Facility3 ;Give up 3rd Facility

DEPART Tot_Process ;Leave Queue

UNLINK Chain1,Nxtblk ;Take all waiting Xacts ; off Userchain ENTER Pool,100 ;Place 100 units in the

; Storage

LOGIC R Switch_1 ;Turn off logic switch LEAVE Pool,50 ;Take 50 units from

; Storage

SAVEVALUE Collect-,1 ;Show negative Savevalue ; in model REMOVE Maingrp ;Remove Xact from group ; Maingrp ADVANCE 50,1 ;Wait 10 time units

LEAVE Pool,50 ;Take 50 units from ; Storage

Finis TERMINATE 1 ;Destroy Xact

11.2.2. Report

This section contains a standard report generated by the program listed in Section 11.2.1. Each item is explained individually in Section 11.3.

Let’s now examine the items included in a standard GPSS

World Report. This section includes the complete report resulting from the simulation in Section 11.2.1. The individual items are considered separately in Section 11.3.

GPSS World Simulation Report - SAMPLE9.1.1 Tuesday June 6, 2000 14:00:59

START TIME END TIME BLOCKS FACILITIES STORAGES 0.000 5187.692 32 3 1

NAME VALUE

ADDUP 10007.000

CHAIN1 10012.000

COLLECT 10017.000

FACILITY1 10011.000

FACILITY2 10014.000

FACILITY3 10015.000

FINIS 32.000

MAINGRP 10005.000

MATRIX1 10003.000

NUMGRP 10006.000

NXTBLK 12.000

PARAM_1 10008.000

POOL 10002.000

PROCESS_TIME 10016.000

SWITCH_1 10009.000

TOT_PROCESS 10010.000

TRANSIT 10004.000

LABEL LOC BLOCK TYPE ENTRY COUNT CURRENT COUNT RETRY 1 GENERATE 61 1 0

2 JOIN 60 0 0

3 JOIN 60 0 0

4 SAVEVALUE 60 0 0

5 ASSIGN 60 0 0

6 JOIN 60 0 0

7 LOGIC 60 0 0

8 MSAVEVALUE 60 0 0

9 QUEUE 60 9 0

10 SEIZE 51 0 0

11 LINK 51 0 0

NXTBLK 12 SEIZE 51 0 0 13 SEIZE 51 0 0

14 QUEUE 51 0 0

15 ADVANCE 51 1 0

16 DEPART 50 0 0

17 TABULATE 50 0 0

18 RELEASE 50 0 0

19 ADVANCE 50 0 0

20 RELEASE 50 0 0

21 ADVANCE 50 0 0

22 RELEASE 50 0 0

23 DEPART 50 0 0

24 UNLINK 50 0 0

25 ENTER 50 0 0

26 LOGIC 50 0 0

27 LEAVE 50 0 0

28 SAVEVALUE 50 0 0

29 REMOVE 50 0 0

30 ADVANCE 50 0 0

31 LEAVE 50 0 0

FINIS 32 TERMINATE 50 0 0

FACILITY ENTRIES UTIL. AVE. TIME AVAIL. OWNER PEND INTER RETRY DELAY

FACILITY1 51 0.937 95.278 1 51 0 0 0 9

FACILITY2 51 0.853 86.719 1 51 0 0 0 0

FACILITY3 51 0.949 96.523 1 51 0 0 0 0

QUEUE MAX CONT. ENTRY ENTRY(0) AVE.CONT. AVE.TIME AVE.(-0) RETRY

TOT_PROCESS 11 10 60 0 6.439 556.700 556.700 0 PROCESS_TIME 1 1 51 0 0.660 67.112 67.112 0

STORAGE CAP. REM. MIN. MAX. ENTRIES AVL. AVE.C. UTIL. RETRY DELAY

POOL 400 400 0 150 5000 1 23.628 0.059 0 0 TABLE MEAN STD.DEV. RANGE RETRY FREQUENCY CUM.% TRANSIT 553.184 307.992 0

_ - 200.000 8 16.00 200.000 - 400.000 10 36.00 400.000 - 600.000 7 50.00 600.000 - 800.000 12 74.00 800.000 - 1000.000 11 96.00

1000.000 - 1200.000 2 100.00

USER CHAIN SIZE RETRY AVE.CONT ENTRIES MAX AVE.TIME

CHAIN1 0 0 0.277 48 1 29.927

XACT GROUP GROUP SIZE RETRY

MAINGRP 10 0

NUMERIC GROUP GROUP SIZE RETRY

NUMGRP 2 0

LOGICSWITCH VALUE RETRY SWITCH_1 1 0

SAVEVALUE RETRY VALUE ADDUP 0 60.000 COLLECT 0 -50.000

MATRIX RETRY INDICES NUMERIC VALUE MATRIX1 0

Intermediate Values are Zero. (2,2) 6.413

Intermediate Values are Zero.

CEC XN PRI M1 ASSEM CURRENT NEXT PARAMETER VALUE 61 0 5187.692 61 1 2

FEC XN PRI BDT ASSEM CURRENT NEXT PARAMETER VALUE 51 0 5389.554 51 15 16

PARAM_1 232.000

62 0 5523.253 62 0 1

This section explains the items in the standard GPSS World report.

Title

GPSS World Simulation Report - SAMPLE9.1.1

Tuesday June 6, 2000 13:20:07

The title line of the standard report is taken from the name of the Model File that produced the report. The Date and Time of the running of the model is also included.

General Information

START TIME END TIME BLOCKS FACILITIES STORAGES 0.000 11359.609 32 3 1

∙START TIME. The absolute system clock at the beginning of the measurement period. Utilizations and space-time products are based on the START TIME. The START TIME is set equal to the absolute system clock by a RESET or CLEAR statement.

∙END TIME. The absolute clock time that the termination count became 0.

∙BLOCKS. The number of Block entities in the simulation at the end of the simulation.

∙FACILITIES. The number of Facility entities in the simulation at the end of the simulation.

∙STORAGES. The number of Storage entities in the simulation at the end of the simulation.

Names

NAME VALUE

ADDUP 10007.000

CHAIN1 10012.000

COLLECT 10017.000

∙NAME. User assigned names used in your GPSS World model since the last Translation.

∙VALUE. The numeric value assigned to the name. System assigned numbers start at 10000.

Blocks

LABEL LOC BLOCK TYPE ENTRY COUNT CURRENT COUNT RETRY 1 GENERATE 61 1 0

2 JOIN 60 0 0

3 JOIN 60 0 0

4 SAVEVALUE 60 0 0

5 ASSIGN 60 0 0

6 JOIN 60 0 0

7 LOGIC 60 0 0

8 MSAVEVALUE 60 0 0

9 QUEUE 60 9 0

10 SEIZE 51 0 0

11 LINK 51 0 0

NXTBLK 12 SEIZE 51 0 0

∙LABEL. Alphanumeric name of this Block if given one.

∙LOC. Numerical position of this Block in the model. "Location".

∙BLOCK TYPE. The GPSS Block name.

∙ENTRY COUNT. The number of Transactions to enter this Block since the last RESET or

CLEAR statement or since the last Translation.

∙CURRENT COUNT. The number of Transactions in this Block at the end of the simulation.

∙RETRY. The number of Transactions waiting for a specific condition depending on the state of this

Block entity.

Facilities

FACILITY ENTRIES UTIL. AVE. TIME AVAIL. OWNER PEND INTER RETRY DELAY

FACILITY1 51 0.937 95.278 1 51 0 0 0 9

FACILITY2 51 0.853 86.719 1 51 0 0 0 0

∙FACILITY. Name or number of the Facility entity.

∙ENTRIES. The number of times the Facility was seized or preempted since last RESET or CLEAR

command or since the last Translation of the model.

∙UTIL. The fraction of simulated time in the last measurement period that the Facility was owned.

A measurement period begins with the

Translation of a model or the issuing of a RESET or CLEAR command.

∙AVE. TIME. The average time of ownership by individual Transactions during the measurement period. A measurement period begins with a

Translation of the model, or when a RESET or

CLEAR command is issued.

∙AVAIL. The availability state of the Facility entity at the end of the simulation. 1 means available, 0 means unavailable.

∙OWNER. The number of the Transaction which owns the Facility entity. 0 means the Facility is not owned.

∙PEND. The number of Transactions waiting to preempt this Facility by entering "Interrupt Mode" PREEMPT blocks.

∙INTER. The number of Transactions currently preempted at this Facility. The count of

Transactions on the interrupt chain.

∙RETRY. The number of Transactions waiting for a specific condition depending on the state of this Facility entity.

∙DELAY. The number of Transactions waiting to SEIZE the Facility. This chain also contains

Transactions waiting to preempt the Facility in "Priority Mode" PREEMPT blocks.

Queues

QUEUE MAX CONT. ENTRY ENTRY(0) AVE.CONT. AVE.TIME AVE.(-0) RETRY

TOT_PROCESS 11 10		60 0	6.439 556.700 556.700 0
PROCESS_TIME	1	1	51 0 0.660 67.112 67.112 0

∙QUEUE. Name or number of the Queue entity.

∙MAX. The maximum content of the Queue entity during the measurement period. A measurement period begins with the Translation of a model or the issuing of a RESET or CLEAR command.

∙CONT. The current content of the Queue entity

at the end of the simulation period.

∙ENTRY. Entry count. The total count of Queue entries during the measurement period.

∙ENTRY(0). "Zero entry" count. The total count of Queue entries with a 0 residence time.

∙AVE.CONT. The time weighted average of the

Queue entity content during the measurement period. The space-time product divided by the time duration of the measurement period.

∙AVE.TIME. The average time per unit of Queue content utilized during the measurement period.

The space-time product divided by the total entry count.

∙AVE.(-0). The average time per unit of Queue content utilized during the measurement period, adjusted for "zero entries". The space-time product divided by (the total entry count less the zero entry count).

∙RETRY. The number of Transactions waiting for a specific condition depending on the state of this

Queue entity.

Storages

STORAGE CAP. REM. MIN. MAX. ENTRIES AVL. AVE.C. UTIL. RETRY DELAY

POOL 400 400 0 150 5000 1 23.628 0.059 0 0

∙STORAGE. Name or number of the Storage entity.

∙CAP. The Storage capacity of the Storage entity defined in the STORAGE statement.

∙REM. The number of unused Storage units at the end of the simulation.

∙MIN. The minimum number of Storage units in use during the measurement period. A measurement period begins with the Translation of a model or the issuing of a RESET or CLEAR command.

∙MAX. The maximum number of Storage units in use during the measurement period.

∙ENTRIES. The number of "entries" into the Storage entity during the measurement period.

The total accumulation of operand B of ENTER statements.

∙AVL. The availability state of the Storage entity at the end of the simulation. 1 means available, 0 means unavailable.

∙AVE.C. The time weighted average of the

Storage content during the measurement period.

The space-time product divided by the time duration of the measurement period.

∙UTIL. The fraction of the total space-time product of the Storage entity utilized during the measurement period.

∙RETRY. The number of Transactions waiting for a specific condition depending on the state of this Storage entity.

∙DELAY. The number of Transactions waiting to enter ENTER blocks on behalf of this Storage entity.

Tables and Qtables

TABLE MEAN STD.DEV. RANGE RETRY FREQUENCY CUM.% TRANSIT 553.184 307.992 0

_ - 200.000 8 16.00 200.000 - 400.000 10 36.00 400.000 - 600.000 7 50.00 600.000 - 800.000 12 74.00 800.000 - 1000.000 11 96.00

1000.000 - 1200.000 2 100.00

∙TABLE. Name or number of the Table or Qtable entity.

∙MEAN. The weighted arithmetic average of tabulated values.

∙STD.DEV. The weighted sample standard deviation of tabulated values.

S.D.= SQR( (SOS/(COUNT-1)) - (SUM2/(COUNT)(COUNT-1)) )

Where SOS is the accumulated sum-of-squares.

∙ RANGE. The lower and upper limits of the frequency class being reported. Values of the Table argument which are greater than the lower limit and less than or equal to the upper limit cause this frequency class to be updated. The B

operand of the TABULATE statement can be used to provide a weighting factor. Frequency classes with accumulations of 0 are not reported.

∙RETRY. The number of Transactions waiting for a specific condition depending on the state of this

Table entity.

∙FREQUENCY. The total weighted count of tabulated items to fall within this range. The total of all TABULATE B operands.

∙CUM.% The cumulative frequency count expressed as percent of total count.

Userchains

USER CHAIN SIZE RETRY AVE.CONT ENTRIES MAX AVE.TIME CHAIN1 0 0 0.277 48 1 29.927

∙USER CHAIN. Name or number of the Userchain entity.

∙SIZE. The number of Transactions on the User Chain at the end of the measurement period.

∙RETRY. The number of Transactions waiting for a specific condition depending on the state of this Userchain entity.

· AVE.CONT. The time weighted average of the User Chain occupancy count during the measurement period. The space-time product divided by the time duration of the measurement period.

∙ENTRIES. The total number of Transactions placed on the User Chain during the measurement period.

∙MAX. The maximum number of Transactions on the User Chain during the measurement period.

∙AVE.TIME. The average time per Transaction on the User Chain during the measurement period. The space-time product divided by the total entry count.

Transaction Groups

XACT GROUP GROUP SIZE RETRY

MAINGRP 10 0

∙ XACT GROUP. Name or number of the Transaction Group entity.