Problems with the "By Percentage" parameter on processor

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Lucas Braga asked Jun 12 2016 at 8:34 PM Lucas Braga edited Jun 13 2016 at 4:57 PM

Problems with the "By Percentage" parameter on processor

So... I have a processor (with a "by percentage" parameter) that should send 1/3 of the items to one Queue and 2/3 of the items to another Queue. At first, that happens, but when I run the model again, all items go to the same Queue. Can anyone help me?

See attached file.

Software Version:

FlexSim 7.5.4

process flow by percentage

618-test1.fsm (17.9 KiB)

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Answer 1 · 2016-06-12T21:44:51Z

Michael Machado answered Jun 12 2016 at 9:44 PM Lucas Braga edited Jun 13 2016 at 4:57 PM

Please, see the model attached. I just consider your percentages and increase the arrival rate. Also, considering the Arrival Style that you choosed "Arrival Schedule" I only added more number of arrivals to evaluate. Please, open the source's proprierties and see the changes made. It seems that the flow percentage is doing right now.

618-test1-byfb.fsm (20.1 KiB)

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Lucas Braga commented · Jun 12 2016 at 10:30 PM

It's working. Thanks. But, for example, in the first processor... the Output Port 1 is the Queue 7, and nº2 is Queue11. When the percentage system is: 1/3 to Port 1 and 2/3 to Port 2, the models runs the way it should, but these percentages are inverted. It doesn't make sense to me

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Michael Machado Lucas Braga commented · Jun 12 2016 at 10:55 PM

Lucas, veja a imagem. Ao executar o modelo por um tempo maior, você pode ver a quantidade de items que saíram do Processor 6 (54), sendo que aproximadamente 30% foram enviados para o Queue 7 (conectado a porta 1 do processor6), e o restante, aproximadamente 70% foram enviados ao Queue 11, conectado a porta 2 do Processor 6. A opção By Percentage nas picklists está dentro de Random (aleatório) de acordo com o percentual estipulado. Se olhar no código que está por trás desta picklist, verá que o percentual está oscilando de acordo com uma distribuição uniform, oscilando entre 0 e 100, respeitando as regras de envio de acordo com as portas. Veja abaixo, que por trás da picklist existe o comando declarando a semente geradora de números aleatórios e também a distribuição uniform. Apesar de existirem as picklists para facilitar a modelagem na aplicação da parte lógica, é interessante clicar no símbolo que lembra um pergaminho, que você verifica o que está escrito ou o que significam as picklists. Qualquer dúvida, estamos a disposição.

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modelo-teste.png (392.8 KiB)

teste2.png (26.3 KiB)

Michael Machado Michael Machado commented · Jun 12 2016 at 10:56 PM

Só para complementar a resposta acima. "De acordo com os % estipulados para envio das respectivas portas".

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Michael Machado commented · Jun 13 2016 at 4:05 PM

Lucas, please, provide me your e-mail and I will send a material on that, explaining with all details. Thanks,

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Lucas Braga Michael Machado commented · Jun 13 2016 at 4:56 PM

bglucas_@hotmail.com or lucasbrags8@gmail.com Thanks

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