M/M/1 Simulation in LabView

[Iradat]

Hi Everyone,

I am a new user of LabView and my question  is as follows:

"Is it possible to simulate a simple M/M/1 single server queuing model using LabView?"

Please guide

Faisal Iradat

[ChrisJ]

Hello Faisal,

I am not familiar with the M/M/1 single server queuing model, so unfortunately I don't have an example to show you. However if you have an algorithm you should be able to code it in LabVIEW without problems. People code all sorts of models and simulations in LabVIEW everyday. As a new user there are some great resources you may want to check out. They probably won't have much in the way of developing your model, but should get you started programming in LabVIEW. I hope this helps.

Best Regards,
Chris J

Getting Started with LabVIEW 7.0/7.1
https://www.ni.com/docs/en-US/bundle/323427a/resource/323427a.pdf

Getting Started with LabVIEW 8.0
https://www.ni.com/docs/en-US/bundle/373427b/resource/373427b.pdf

[falkpl]

There should be no problem simulating the M/M/1 queuing model.  Are you just looking to calculate model statistics like average queue length, number in system, average time in queue and server utilization or do you want to run an actual simulator?

Paul

[falkpl]

Atached is an actual M/M/1 in use, if I remember correctly (I studied queuing theory a few years ago so my memory might not hold the test of time) a M/M/1 model is a simple server client model where items arive iat a poisson distribution and are serviced with a same distribution and both are memoryless, that is , thay are independent of the state of the system.  Attached is an example of a M/M/1 (the distribution is trandom not poisson? but close enough to get the point), you can easily convert it to an M/M/n by adding more server threads.  Hope thsi helps.

Paul

[falkpl]

OOps here is the attachment,

Paul

[Iradat]

Hi Paul,

This is the what I was looking for. Thanks a lot.

Secondly, does LabView provides built-in statistical functions such as Poisson Dist., Normal Dist., and so on.

Thanks once again

Faisal Iradat

[falkpl]

There are a few distributions including normal distributions but I didn't use the Poisson because I don't think there is one in LV 7.0 (my current version).  There are a few options however, you can use a matlab script (assumes you have matlab and experience with it), write your own distribution function or upgrade to LV 8.0, NI has claimed that the statistical package has been greatly upgraded and looks to have many more distributions and statistical functions (I would check with them first and not take my work as fact).  If you are just looking to calculate statistics on the M/M/1 model, you will not need any fancy math just some simple functions like factorial and the exponential function.  You can then compare the model with the simulator.

Good luck,

Paul

[falkpl]

There are a few distributions including normal distributions but I didn't use the Poisson because I don't think there is one in LV 7.0 (my current version).  There are a few options however, you can use a matlab script (assumes you have matlab and experience with it), write your own distribution function or upgrade to LV 8.0, NI has claimed that the statistical package has been greatly upgraded and looks to have many more distributions and statistical functions (I would check with them first and not take my work as fact).  If you are just looking to calculate statistics on the M/M/1 model, you will not need any fancy math just some simple functions like factorial and the exponential function.  You can then compare the model with the simulator.

Good luck,

Paul

[reem77]

can you help me plese to write a matlab code to create an" m/m/n" queue

[altenbach]

You posted in a 11 year old thread about LabVIEW.

If you are looking for matlab help, try to post in a matlab forum. This is not it.