Which dispatching rule has the best score for flow time

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Problem -

The following jobs are waiting to be processed at Rick Solano's machine center. Solano's machine center has a relatively long backlog and sets a fresh schedule every 2 weeks, which does not disturb earlier schedules. Below are the jobs received during the previous 2 weeks. They are ready to be scheduled today, which is day 241 (day 241 is a work day). Job names refer to names of clients and contract numbers.

Job

Date Job Received

Production Days Needed

Date for Due

BR-02

228

15

300

CX-01

225

25

270

DE-06

230

35

320

RG-05

235

40

360

SY-11

231

30

310

a) Complete the following table. (Show your supporting calculations.)

b) Which dispatching rule has the best score for flow time?

c) Which dispatching rule has the best score for utilization metric?

d) Which dispatching rule has the best score for lateness?

e) Which dispatching rule would you select? Support your decision.

Dispatching Rule

Job Sequence

Flow Time

Utilization Metric

Average number of jobs

Average Lateness

EDD

 

 

 

 

 

SPT

 

 

 

 

 

LPT

 

 

 

 

 

FCFS

 

 

 

 

 

Reference no: EM131359730

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