Original message (ja) follows after ENG. Hello all. There is a problem with RAM exhaustion when trying to run Dynamo for Civil3D 2025, created with Dynamo for Civil3D 2022. same PC with 64GB RAM, same DWG, same DYN file Dynamo for Civil3D 2022: Memory usage 35GB, completed in 5-10 minutes Dyna…

Feel free to use google translate or similar in future… Hello ENG or other language users, please translate. Hello. Workflow created with Dynamo for Civil3D 2022 There is a problem with RAM exhaustion when trying to run Dynamo for Civil3D 2025. I’m running on the same terminal, same dwg, same …

Are you sure that in 2025 there isnt a part of your script broken due to API changes? Ie can you run a singular or much smaller and get a result to compare against instead of a crash?

@pyXam Thank you for question. I tried with a small dwg input (10MB). Then it outputs same result against Dynamo for C3D 2022 without RAM exhaution. About memory, it was too short to check at task manager.

Hmm ok, i just thought i’d ask to help others help you. Unfortunatly there isn’t much that can be done without example graph or file but others still might have insight as to the issue.

can you create a small sample that reproduces the issue instead of the original production graph?

I’m not an expert in the concept on the Civil 3D side, but if this were Revit I would say it’s element binding at play as the second session for the same graph uses 2x the ram typically (and dyn file sizes go up exponentially).

Interesting about element binding. Is it possible in 2025 to set (as in 2023) that Object binding should be stored only in drawing. Does it make any changes?

Oups, my bad. Didn’t read the complete thread.

@jacob.small Thank you for suggestion. I tried some binding configuration pattern with smaller data. Input：100MB dwg (Original graph) C3D 2022, Store in Graph for Dynamo, Store in Drawing for Dynamo Player RAM before / after execution : 1,890 MB → 2,580 MB (+690MB) C3D 2025, No Binding Dat…

RAM increase on Dynamo for Civil3D 2025

Civil 3D

jacob.small April 24, 2024, 5:01pm 9

Should be, but the source was 2022, which I think had not implemented Element Binding changes so who knows how it was configured.

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RAM increase on Dynamo for Civil3D 2025

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