The model does not complete the run when I do 24 hours simulation, however, it is run when run less simulation time, for example, it is run for 12 hours in spite of using the same parameters in the calculation option.
I upload the model to the secured link for your reference and below are the screenshots of the notification and the calculation summary but could not figure out what is the problem, also before run the validation pass without any problems.
Regards,
Mohamad Azzam
Hello Mohammad,
This is a known issue which is documented in this wiki: "Access violation in module execRouting" when computing with SWMM solver
If you have inlets in your model, check if they are "on-grade" but don't have any downstream gutters or try changing the inlets to "in-sag".
Yashodhan Joshi
Hello Yashodhan,
It is the same physical network, that is running when using other time simulation and can complete the run there, the problem is only when select 24 hours run simulation, if the problem is regarding the inlet and gutters so the run should not be completed for any other simulation. So why we are able to do the complete run with simulations less than 24 hours but the run does not complete in when select 24 hours?
Mohamad
Its taking a long time to compute this model. However, I noticed that the .stsw.sqlite database was very large (order of 2.6 GB0 and noticed a lot of Change Tracking records. I deleted these using the steps provided here and brought down the database size around 30 MB.
I am running it with a very large time step for now (6 hours) but it still is taking a lot of time. Meanwhile you can also look at some options provided in this article since this error can also be related to large instabilities in the model.
Yashodhan Joshi said:I deleted these using the steps provided here and brought down the database size around 30 MB
I was not able to access the steps to reduce the size of the database.
Yashodhan Joshi said:I am running it with a very large time step for now (6 hours) but it still is taking a lot of time
That was discussed with Jesse before and he is aware of a long time of the run, and we requested an enhancement for run time since the same model takes around 2-3 minutes max. when we do run in InfoWorks.
The run is working in other simulation time; yes it takes longer but it does run, the issue is only during 24 hours run and that is why we posted here.
The model is likely encountering extremely unstable conditions at the time that the failure occurs, or an unexpected condition is occurring (such as overflow just starting to occur in a case where there is no downstream gutter) only at a time later on in the simulation.
This model has an unusual configuration of catchbasin connectivity that is unlikely to match the real world conditions, and instability may be occurring in the junction of a large number of conduits.
While we work on troubleshooting this, please confirm the scenario to compute and any other changes we need to make. The scenario name seen in your screenshot is using a calculation option set that is set to run only for 12 hours.
Jesse DringoliTechnical Support Manager, OpenFlowsBentley Communities Site AdministratorBentley Systems, Inc.