Hi, when using server priorities by individual - I'm facing 2 issues. <ol dir="aut

Hi there <a class="user-mention notranslate" data-hovercard-type="user" data-hovercard

Server priorities bug about ciw HOT 1 OPEN

srinath-radhakrishnan commented on August 11, 2024

Server priorities bug

from ciw.

Comments (1)

MichalisPanayides commented on August 11, 2024

Hi there @srinath-radhakrishnan

I am not sure I fully understand what your model looks like. Correct me if I'm wrong but my understanding is that you have two classes of customers:

Class 0 - Apples
Class 1 - Oranges
3 servers

and you want to prioritise your servers for both classes in such a way so that if:

apple customer arrives: Server 1, Server 2 or 3
orange customer arrives: Server 2 or 3, Server 1

One way of doing that is:

import random
import ciw

def custom_server_priority(srv, ind):
    if ind.customer_class == 0:
        priorities = {1: 0, 2: random.random(), 3: random.random()}
        return priorities[srv.id_number]

    if ind.customer_class == 1:
        priorities = {1: 1, 2: random.random(), 3: random.random()}
        return priorities[srv.id_number]


N = ciw.create_network(
    arrival_distributions={
        "Class 0": [ciw.dists.Exponential(1)],
        "Class 1": [ciw.dists.Exponential(1)],
    },
    service_distributions={
        "Class 0": [ciw.dists.Exponential(2)],
        "Class 1": [ciw.dists.Exponential(2)],
    },
    number_of_servers=[3],
    server_priority_functions=[custom_server_priority],
)