1

I have tried to use Network Analyst as an extension and came across a memory issue when trying to run a Closest Facility query.

The query I want to run is routing zone origin and destinations, as facilities and incidents. I have 2650 zones, so herein lies the memory issue as the query is routing to the network (as I'm also routing to the network, not straight line), meaning it's 2650 x 2650 routes.

I thought the best to do is to use ModelBuilder, so I could get the model to export the routes after each iteration or after a batch. Help save on the memory.

My problem is the amount of time this is taking, I have set up a feature selection iterator so one facility is loaded at a time. However, each time I run the model it loads in the 2650 incidents.

So my question is, can I set up ModelBuilder to not load in the locations each time? As the loading of the locations takes about 6 hours to run.

  • 1
    Have you tried OD matrix tool? Sounds like your question is the book definition of OD matrix. – fatih_dur Jan 6 '18 at 23:44
  • The OD matrix tool doesn't map the routes to the network unfortunately, which has to be done in this instance – Chris Carr Jan 7 '18 at 0:34
1

Try setting the number of facilities to find to greater than 2560. That way your initial run would be the 2560 origins to the 2560 destinations, instead of one at a time

  • The first time I ran the model, it got about 15% through the model before telling me it ran out of memory, i ran the full 2650 zones. I've since tried to reduce the analysis and the only time I managed to successfully do this in ArcGIS (not ModelBuilder) was with 10 incidents running to the 2650 facilities. – Chris Carr Jan 5 '18 at 19:35

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.