Exception caught in NetworkNavigator

Question

question

Pablo Concha asked Oct 11, '22 Pablo Concha answered Oct 18, '22

Exception caught in NetworkNavigator

Hi,

a colleague starting working on alternatives to get better performance on a big warehouse model and he wanted to test using networkNodes instead of Astar on a demo where he's getting this exception:

time: 52265.850944 exception: Exception Caught in NetworkNavigator::queryDistanceEx(TaskExecuter* te, FlexSimObject* destobj, NetworkNode* originnetnode, NetworkNode** bestorigin DEFAULTNULL, NetworkNode** bestdestnode DEFAULTNULL, int * bestoriginrow DEFAULTNULL, int * bestdestcol DEFAULTNULL, double* bestdist DEFAULTNULL) object: /DefaultNetworkNavigator

time: 52265.850944 exception: Exception Caught in NetworkNavigator::navigateToObject(treenode traveler, treenode destination, double endspeed) object: /DefaultNetworkNavigator

time: 52265.850944 exception: Exception Caught in ObjectFunction250__project_library_FlexSimObject_behaviour_eventfunctions_OnTimerEvent object: /Operator2 i: /Operator2>variables/coordinatedtasks/ts221/task143 class: /Operator2

time: 52265.850944 exception: Exception caught in TreeNode::receivemessage()

time: 52265.850944 exception: Exception caught in Executive::processeventinlist().

what's weird is that using repeat random streams it varies when the exception shows

Software Version:

FlexSim 21.0.10

network nodes

listas-demo-paths-1110-v3.fsm (148.5 KiB)

5 |100000

Attachments: Up to 12 attachments (including images) can be used with a maximum of 23.8 MiB each and 47.7 MiB total.

Answer 1 · 2022-10-13T21:43:14Z

Kavika F answered Oct 13, '22

Hey @Pablo Concha, I was able to figure out what the problem was with the help of this post. Your travel tasks were telling the Operators to travel to a specific box, but sometimes it would throw errors. If you change it to be the container of the flowitem (such as the queue or rack), then the errors go away.

Notice how in this travel task, I changed it to be token.ficticio_asignado.up so it will get the box's/pallet's container. I only had to change it in two places. My model is attached.

listas-demo-paths-1110-v3_1.fsm

1665697275403.png (13.5 KiB)

listas-demo-paths-1110-v3-1.fsm (149.0 KiB)

5 |100000

Attachments: Up to 12 attachments (including images) can be used with a maximum of 23.8 MiB each and 47.7 MiB total.

Answer 2 · 2022-10-18T14:35:01Z

Pablo Concha answered Oct 18, '22

Thank you Kavika. That seems to solve the problem..

5 |100000

Attachments: Up to 12 attachments (including images) can be used with a maximum of 23.8 MiB each and 47.7 MiB total.

question