France
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Re: Launch multiple instances of SweetHome3D?
It’s not possible without dirty tricks, but I could add an option for that in a future version. Why do you need that?
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Emmanuel Puybaret, Sweet Home 3D creator
It’s not possible without dirty tricks, but I could add an option for that in a future version. Why do you need that?
Hi,
I would also love that in order to be able to launch (night long) "multiple photo rendering" in multiple designs/files. Unless there's another way to achieve this?
France
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Re: Launch multiple instances of SweetHome3D?
I added the com.eteks.sweethome3d.singleInstance system property in Sweet Home 3D 6.5 to make each launch of the application run in a separated process when set to false.
To use this property, add the line
-Dcom.eteks.sweethome3d.singleInstance=false
to a file named SweetHome3D.l4j.ini and stored in Sweet Home 3D installation folder.
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Emmanuel Puybaret, Sweet Home 3D creator
France
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Re: Launch multiple instances of SweetHome3D?
Yes, but both instances will try to use all the cores of the CPU, so I’m not sure it will be efficient.
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Emmanuel Puybaret, Sweet Home 3D creator
United Kingdom
Joined: Jul 4, 2025
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Re: Launch multiple instances of SweetHome3D?
I added the com.eteks.sweethome3d.singleInstance system property in Sweet Home 3D 6.5 to make each launch of the application run in a separated process when set to false.
To use this property, add the line
-Dcom.eteks.sweethome3d.singleInstance=false
to a file named SweetHome3D.l4j.ini and stored in Sweet Home 3D installation folder.
I too would like to be able to run two instances of your excellent program but I cannot find any file named: "SweetHome3D.l4j.ini" in the Sweet Home 3D installation folder (or anywhere else on my computer).
I am running version 7.5 of the program on a Windows 10 PC.
Does the facility only exist for Linux users or can you tell me how to do it in Windows 10 please?
Thank you, & Kind Regards.
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There can be only one! 😊
France
Joined: Nov 7, 2005
Post Count: 9430
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Re: Launch multiple instances of SweetHome3D?
Just create the file SweetHome3D.l4j.ini in the same folder as SweetHome3D.exe
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Emmanuel Puybaret, Sweet Home 3D creator
United Kingdom
Joined: Jul 4, 2025
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Re: Launch multiple instances of SweetHome3D?
Just create the file SweetHome3D.l4j.ini in the same folder as SweetHome3D.exe
Hoping that I had understood you correctly, I created a new text file (as shown below), renamed it as:"SweetHome3D.l4j.ini", opened it (with r/click > Edit ) and inserted the single line:-
"-Dcom.eteks.sweethome3d.singleInstance=false"
then saved it and moved it into the folder containing: "SweetHome3D.exe"
Having done that, I can, indeed, now open two instances of the program simultaneously!
Thank you so much for your help (and for your excellent program!).
Best Regards.
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There can be only one! 😊
Netherlands
Joined: Apr 8, 2022
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Re: Launch multiple instances of SweetHome3D?
Be aware that with separate instances you won't see a newly imported furniture or texture library in one instance in the other instance until you restart it. With a single instance setup you would see an imported library immediately in all open projects. In your case I don't think that will be a problem but remember it when you have two instances running for normal editing and you import furniture or textures.
Also understand that photo rendering will not be faster by doing it in two instances at the same time instead of one after the other. The only advantage is that you can start them both and let them run through the night.
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