Cloudlets Postponed

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Tom Wood2

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Sep 13, 2022, 6:09:14 AM9/13/22
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Hello, I get some of my cloudlets  POSTPONED, and they get ignored.
In the end they stay in the state "INSTANTIATED".
How could I submit a POSTPONED cloudlet back to the broker ? Should I just resubmit it again ?

Prof. Manoel Campos

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Sep 19, 2022, 7:50:56 AM9/19/22
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Hello Tom,

That may happen if you have irregular cloudlet lengths.
Try to make lengths multiple of each one and use "round" numbers.
That is 10000 MI instead of something too granular such as 10001.

I don't know if that is the case, but provide a minimal example showing the issue that I take a look.

Manoel Campos da Silva Filho Software Engineer

Computer Science and Engineering Ph.D. Student at University of Beira Interior (Portugal)

Professor at Federal Institute of Education, Science and Technology of Tocantins (Brazil)

http://manoelcampos.com


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Tom Wood2

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Sep 19, 2022, 10:49:56 AM9/19/22
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I sent you the minimal project per mail.

Tom Wood2

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Sep 19, 2022, 10:56:15 AM9/19/22
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* per Twitter PM.

Prof. Manoel Campos

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Sep 19, 2022, 3:26:57 PM9/19/22
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Please send the example here and I will take a look ASAP.

Manoel Campos da Silva Filho Software Engineer

Computer Science and Engineering Ph.D. Student at University of Beira Interior (Portugal)

Professor at Federal Institute of Education, Science and Technology of Tocantins (Brazil)

http://manoelcampos.com


 about.me

Tom Wood2

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Sep 19, 2022, 5:10:03 PM9/19/22
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minimal.rar

Tom Wood2

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Sep 23, 2022, 5:06:40 AM9/23/22
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I may have found my problem, I was trying to submit cloudlets, even though the FreeNumberOfPEs was 0. Therefore the VMs would get stuck and stop working on cloudlets.
To retry adding the cloudlets to the VMs after a postpone, I called requestDatacentersToCreateWaitingCloudlets with the broker each frame.

Prof. Manoel Campos

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Sep 28, 2022, 3:26:52 PM9/28/22
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I may have found my problem, I was trying to submit cloudlets, even though the FreeNumberOfPEs was 0.
I see, that is expected. But when you submit new VMs or cloudlets, the broker will try to reassign waiting cloudlets to some VMs.
 
To retry adding the cloudlets to the VMs after a postpone, I called requestDatacentersToCreateWaitingCloudlets with the broker each frame.

You shouldn't have to call that method by yourself. Have you fixed the issue by doing that?
 
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