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* SLAM II VERSION 4.2 C COPYRIGHT 1992 BY PRITSKER CORPORATION. *
* CONFIDENTIAL - THIS SOFTWARE IS A TRADE SECRET OWNED BY PRITSKER *
* CORPORATION AND MAY NOT BE USED OR DISCLOSED EXCEPT AS PERMITTED *
* IN THE SOFTWARE LICENSE AGREEMENT, SERIAL NUMBER: 203852 *
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1
1 GEN, ENGEL, ELEVATOR, 11/20/94,5,Y,Y,Y/Y,N,Y/1,72;
2 LIMITS,6,12,100;
3 NETWORK;
4 CREATE, EXPON(288);
5 WEIGHT QUEUE(1);
6 ACTIVITY(1)/1,RLOGN(120.,60.);
7 UNLOAD QUEUE(2),,6,BLOCK;
8 ACTIVITY(1)/2,EXPON(240);
9 TERMINATE;
10 ENDNETWORK
11 INITIALIZE,0,36000;
12 FIN;
1
The next section describes some general information about the run.
S L A M I I E C H O R E P O R T
SIMULATION PROJECT ELEVATOR BY ENGEL
DATE 11/20/1994 RUN NUMBER 1 OF 5
SLAM II VERSION JUN 93
GENERAL OPTIONS
PRINT INPUT STATEMENTS (ILIST): YES
PRINT ECHO REPORT (IECHO): YES
EXECUTE SIMULATIONS (IXQT): YES
WARN OF DESTROYED ENTITIES: YES
PRINT INTERMEDIATE RESULTS HEADING (IPIRH): NO
PRINT SUMMARY REPORT (ISMRY): YES
LIMITS ON FILES
MAXIMUM NUMBER OF USER FILES (MFILS): 6
MAXIMUM NUMBER OF USER ATTRIBUTES (MATR): 12
MAXIMUM NUMBER OF CONCURRENT ENTRIES (MNTRY): 100
The following summarizes the criteria used for accessing entities from QUEUES.
FILE SUMMARY
FILE INITIAL RANKING
NUMBER ENTRIES CRITERION
1 0 FIFO
2 0 FIFO
3 0 FIFO
4 0 FIFO
5 0 FIFO
6 0 FIFO
The starting random numbers for random number streams used by SLAM are shown below. These are the default random numbers but can be changed. Unless otherwise specified, random number stream 9 is used when sampling from distributions.
RANDOM NUMBER STREAMS
STREAM SEED REINITIALIZATION
NUMBER VALUE OF STREAM
1 428956419 NO
2 1954324947 NO
3 1145661099 NO
4 1835732737 NO
5 794161987 NO
6 1329531353 NO
7 200496737 NO
8 633816299 NO
9 1410143363 NO
10 1282538739 NO
Information about initialization is provided.
INITIALIZATION OPTIONS
BEGINNING TIME OF SIMULATION (TTBEG): 0.0000E+00
ENDING TIME OF SIMULATION (TTFIN): 0.3600E+05
STATISTICAL ARRAYS CLEARED (JJCLR): YES
VARIABLES INITIALIZED (JJVAR): YES
FILES INITIALIZED (JJFIL): YES
NSET/QSET STORAGE ALLOCATION
DIMENSION OF NSET/QSET (NNSET): 5000
WORDS ALLOCATED TO FILING SYSTEM: 1600
WORDS ALLOCATED TO VARIABLES: 176
WORDS AVAILABLE FOR PLOTS/TABLES: 3224
INPUT ERRORS DETECTED: 0
No errors were detected, so SLAM will execute our code - note we requested 5 runs of our system. Each run will start with a different random number to be used in sampling the distributions so results will vary.
The following statistics are collected by SLAM by default.
EXECUTION WILL BE ATTEMPTED
1
S L A M I I S U M M A R Y R E P O R T
SIMULATION PROJECT ELEVATOR BY ENGEL
DATE 11/20/1994 RUN NUMBER 1 OF 5
CURRENT TIME 0.3600E+05
STATISTICAL ARRAYS CLEARED AT TIME 0.0000E+00
**FILE STATISTICS**
FILE AVERAGE STANDARD MAXIMUM CURRENT AVERAGE
NUMBER LABEL/TYPE LENGTH DEVIATION LENGTH LENGTH WAIT TIME
1 WEIG QUEUE 2.651 3.412 12 2 681.792
2 UNLO QUEUE 4.178 2.347 6 6 1097.942
3 0.000 0.000 0 0 0.000
4 0.000 0.000 0 0 0.000
5 0.000 0.000 0 0 0.000
6 0.000 0.000 0 0 0.000
7 CALENDAR 2.363 0.541 4 2 125.666
From above, we can see that for run 1, the average
length of the weighing queue was 2.651 entities and
their average waiting time was 681.792 time units (seconds in our case).
The Unloading queue had an average length of 4.178 entities
and an average wait time of 1097.942 seconds.
Information is also provided about hte
maximum length of entities in queus and the length
at the end of the simulation.
These information will be useful to the manager of the elevator
in determining how to better satisy customers, whether
changes to the system should be explored, etc.
Below, statistics for service activities are provided. Note that the activity starting at the weighing queue (the weighing activity) has an average utilization of 0.442 (it is busy 44.2% of the time), has a maximum idle time of 619.14 time units, a maximum busy time of 1864.50 time units (seconds) and served 137 entities. Note the activity starting at the unloading queue was busy 92.2% of the time and served 130 entities (entities are stil in the system at the end of the day).
**SERVICE ACTIVITY STATISTICS**
ACT ACT LABEL OR SER AVERAGE STD CUR AVERAGE MAX IDL MAX BSY ENT
NUM START NODE CAP UTIL DEV UTIL BLOCK TME/SER TME/SER CNT
1 WEIG QUEUE 1 0.442 0.50 0 0.35 619.14 1864.50 137
2 UNLO QUEUE 1 0.922 0.27 1 0.00 641.1322733.49 130
EXECUTION WILL BE ATTEMPTED
1
S L A M I I S U M M A R Y R E P O R T
Examine the statistics for the subsequent runs. Note that differences can be rather dramatic. Why? THe differences result from the starting random number used in sampling from distributions. One must be careful to run enough runs to determine appropriate averages and standard deviations before making decisions based on these data!
SIMULATION PROJECT ELEVATOR BY ENGEL
DATE 11/20/1994 RUN NUMBER 2 OF 5
CURRENT TIME 0.3600E+05
STATISTICAL ARRAYS CLEARED AT TIME 0.0000E+00
**FILE STATISTICS**
FILE AVERAGE STANDARD MAXIMUM CURRENT AVERAGE
NUMBER LABEL/TYPE LENGTH DEVIATION LENGTH LENGTH WAIT TIME
1 WEIG QUEUE 0.068 0.282 3 1 22.199
2 UNLO QUEUE 0.802 1.063 4 0 264.999
3 0.000 0.000 0 0 0.000
4 0.000 0.000 0 0 0.000
5 0.000 0.000 0 0 0.000
6 0.000 0.000 0 0 0.000
7 CALENDAR 2.003 0.700 4 3 162.431
**SERVICE ACTIVITY STATISTICS**
ACT ACT LABEL OR SER AVERAGE STD CUR AVERAGE MAX IDL MAX BSY ENT
NUM START NODE CAP UTIL DEV UTIL BLOCK TME/SER TME/SER CNT
1 WEIG QUEUE 1 0.327 0.47 1 0.00 1636.56 595.15 109
2 UNLO QUEUE 1 0.676 0.47 1 0.00 1613.46 4621.75 108
EXECUTION WILL BE ATTEMPTED
1
S L A M I I S U M M A R Y R E P O R T
SIMULATION PROJECT ELEVATOR BY ENGEL
DATE 11/20/1994 RUN NUMBER 3 OF 5
CURRENT TIME 0.3600E+05
STATISTICAL ARRAYS CLEARED AT TIME 0.0000E+00
**FILE STATISTICS**
FILE AVERAGE STANDARD MAXIMUM CURRENT AVERAGE
NUMBER LABEL/TYPE LENGTH DEVIATION LENGTH LENGTH WAIT TIME
1 WEIG QUEUE 0.110 0.348 2 0 28.586
2 UNLO QUEUE 1.428 1.850 6 3 375.187
3 0.000 0.000 0 0 0.000
4 0.000 0.000 0 0 0.000
5 0.000 0.000 0 0 0.000
6 0.000 0.000 0 0 0.000
7 CALENDAR 2.193 0.640 4 3 141.750
**SERVICE ACTIVITY STATISTICS**
ACT ACT LABEL OR SER AVERAGE STD CUR AVERAGE MAX IDL MAX BSY ENT
NUM START NODE CAP UTIL DEV UTIL BLOCK TME/SER TME/SER CNT
1 WEIG QUEUE 1 0.406 0.49 1 0.02 1080.68 1106.46 137
2 UNLO QUEUE 1 0.787 0.41 1 0.00 1092.30 5658.74 133
EXECUTION WILL BE ATTEMPTED
1
S L A M I I S U M M A R Y R E P O R T
SIMULATION PROJECT ELEVATOR BY ENGEL
DATE 11/20/1994 RUN NUMBER 4 OF 5
CURRENT TIME 0.3600E+05
STATISTICAL ARRAYS CLEARED AT TIME 0.0000E+00
**FILE STATISTICS**
FILE AVERAGE STANDARD MAXIMUM CURRENT AVERAGE
NUMBER LABEL/TYPE LENGTH DEVIATION LENGTH LENGTH WAIT TIME
1 WEIG QUEUE 0.372 0.922 6 0 94.399
2 UNLO QUEUE 1.219 1.203 5 3 311.337
3 0.000 0.000 0 0 0.000
4 0.000 0.000 0 0 0.000
5 0.000 0.000 0 0 0.000
6 0.000 0.000 0 0 0.000
7 CALENDAR 2.339 0.611 4 3 141.018
**SERVICE ACTIVITY STATISTICS**
ACT ACT LABEL OR SER AVERAGE STD CUR AVERAGE MAX IDL MAX BSY ENT
NUM START NODE CAP UTIL DEV UTIL BLOCK TME/SER TME/SER CNT
1 WEIG QUEUE 1 0.506 0.50 1 0.00 1125.56 2569.37 141
2 UNLO QUEUE 1 0.833 0.37 1 0.00 613.84 6516.14 137
EXECUTION WILL BE ATTEMPTED
1
S L A M I I S U M M A R Y R E P O R T
SIMULATION PROJECT ELEVATOR BY ENGEL
DATE 11/20/1994 RUN NUMBER 5 OF 5
CURRENT TIME 0.3600E+05
STATISTICAL ARRAYS CLEARED AT TIME 0.0000E+00
**FILE STATISTICS**
FILE AVERAGE STANDARD MAXIMUM CURRENT AVERAGE
NUMBER LABEL/TYPE LENGTH DEVIATION LENGTH LENGTH WAIT TIME
1 WEIG QUEUE 4.123 3.982 14 0 1091.337
2 UNLO QUEUE 4.608 1.974 6 5 1219.659
3 0.000 0.000 0 0 0.000
4 0.000 0.000 0 0 0.000
5 0.000 0.000 0 0 0.000
6 0.000 0.000 0 0 0.000
7 CALENDAR 2.458 0.516 4 2 130.492
**SERVICE ACTIVITY STATISTICS**
ACT ACT LABEL OR SER AVERAGE STD CUR AVERAGE MAX IDL MAX BSY ENT
NUM START NODE CAP UTIL DEV UTIL BLOCK TME/SER TME/SER CNT
1 WEIG QUEUE 1 0.486 0.50 0 0.38 735.15 4716.15 136
2 UNLO QUEUE 1 0.971 0.17 1 0.00 299.0832620.57 130