Mantaflow: bake always crashes, cannot be resumed I have problems baking a smoke simulation with Mantaflow, I tried Blender 2.92 and 2.93 Alpha. When baking a (not very complex) simulation, Blender always crashes at around 30% of a 250 frames simulation. First of all I don't know why, because the domain resolution is only at 128, I've got and AMD Ryzen 3 at 16 GB RAM, a GTX1660 with 6 GB and more than 400 GB free disk space.
First of all, I've learned from tutorials that 128 is not a very high resolution for a good fire simulation. Is there a chance to tweak some settings so that the bake won't crash?
And if not, is there a chance to continue baking after a crash? I've set the cache to Resumable and when I hit Esc to stop baking, save my file and restart Blender I can resume baking where it stopped. The problem is, there comes the time when it crashes and although all files that were baked up to this moment are stored in the cache directory, hitting Resume will start from the frame that was baked when I last saved the file, not as far as it baked until it crashed.
Even worse, if I didn't stop baking and saved my file inbetween, there is not even a Resume button, I can only hit Bake Data and it starts from frame 1.
How can I tell Blender to resume after the finished frames?
I know that's actually two questions, but if one part could be answered the other becomes obsolete.
After realizing that there's no problem if I use Uni Cache (what I usually avoid) instead of OpenVDB I've found an answer myself even for OpenVDB. I don't know why nobody else is experiencing these problems because I'm using the default settings but if so, here's the simple thing I did:
In Blender 2.90 and above the OpenVDB volume format comes with Advanced Settings. Here you can choose Compression Volumes &quot;None&quot;, &quot;Blosc&quot; and &quot;Zip&quot;. The default value is &quot;Blosc&quot;.
After switching to &quot;Zip&quot;, the baking works without any problems. &quot;None&quot; works, too. Only &quot;Blosc&quot; makes all my machines crash.
The difference to Blender 2.83 LTS (which doesn't crash) is, there are no Advanced Settings in that version, probably it uses &quot;Zip&quot; or no compression instead of &quot;Blosc&quot;.