Frame 195

[Otuama]

I'm doing a sim with viscous fluid, passive and rigid bodies.

A couple of days ago I left it simming (with command line). It had crashed at frame 195. The command line said due to a memory issue.

I restarted the sim last night and this morning I had the same problem, again with frame 195. I took a screenshot of the task manager but I'm away from the laptop now. The command line was using about 2.3 GB RAM (of 8 GB). It wasn't using any CPU. Nothing else was using enough RAM to cause a memory problem. I went on the other task manager tab. The laptop was using 0-2% CPU. The laptop was using nearly 7 GB RAM, even though the processes tab wasn't showing this.

When I closed the command line the RAM went down to about 1 GB usage (from 7) and the CPU went to about 5-10%.

It's really strange and really, really annoying. There's nothing important happening at frame 195 for it to do this.

Any ideas why?

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[Otuama]

I've now been simming for about 21hrs with no crashes etc. It's on frame 371.

This is because I've turned off the rigid bodies. So, having object dynamics turned on was the cause of the problems. But now, I've got no objects moving with the fluid.

[LuisMiguel]

Hi,

It is probably you had the memory issue, but RealFlow crashs before hanging up the machine and for that reason you don't see the memory peak. If you have objects moving fast, in the case you have the rigid bodies activated, they could have an explosion and making high velocities for the fluid and for that reason RealFlow is crashing, you could simulate the rigid bodies first, and then importing the animation as SD or alembic to simulate with the fluid. If the fluid will move the objects, try to play with the Caronte quality. Basically, I set the Caronte quality between 20-30 for most of my simulations.

luisM.

[Otuama]

Ok, I'll give the Caronte quality a tweak sometime.

With this sim, viscous fluid moves some walnuts. So, no fast moving objects.

This is the Rf render I did last night when I realised that my materials had been deleted.


And before they were deleted.

[LuisMiguel]

Hi,

It is/was cool

luisM.