Fluid simulation does not show the right ammount of required memory #48429

New Issue

forceengine · 2016-05-14T13:48:37+02:00

forceengine commented

2016-05-14 13:48:37 +02:00

System Information

OS: Win 7, 64 bit

GPU: Radeon R9 290X

Blender Version
Broken: 2.77a Hash: abf6f08

Short description of error
In my setup I tested a fluid simulation from an open cup into another one. With my 16GB of RAM I was able to set a final fluid resolution of 444. The bake button told me that the required memory is ~5GB - it used about 12 GB.
Then I tested a fluid from a bottle into a cup. On the same system I get only a fluid resolution of 72. The bake button tells me that it requires 21.76 MB of RAM. It uses 14GB of RAM - that's ~666 times more than it said it would. I guess the bake button tells me the about number it will require, but over to be ~666 times off is a bit much.

When I use a higher fluid resolution than 72 blender runs out of memory and crashes.

**System Information** ``` OS: Win 7, 64 bit ``` GPU: Radeon R9 290X **Blender Version** Broken: 2.77a Hash: abf6f08 **Short description of error** In my setup I tested a fluid simulation from an open cup into another one. With my 16GB of RAM I was able to set a final fluid resolution of 444. The bake button told me that the required memory is ~5GB - it used about 12 GB. Then I tested a fluid from a bottle into a cup. On the same system I get only a fluid resolution of 72. The bake button tells me that it requires 21.76 MB of RAM. It uses 14GB of RAM - that's ~666 times more than it said it would. I guess the bake button tells me the about number it will require, but over to be ~666 times off is a bit much. When I use a higher fluid resolution than 72 blender runs out of memory and crashes.

forceengine commented

2016-05-14 13:48:37 +02:00

Changed status to: 'Open'

forceengine commented

2016-05-14 13:48:37 +02:00

Added subscriber: @forceengine

Bastien Montagne commented

2016-05-15 11:16:48 +02:00

Added subscriber: @mont29

Bastien Montagne commented

2016-05-15 11:16:48 +02:00

Changed status from 'Open' to: 'Archived'

Bastien Montagne closed this issue

2016-05-15 11:16:48 +02:00

Bastien Montagne self-assigned this 2016-05-15 11:16:48 +02:00

Bastien Montagne commented

2016-05-15 11:16:48 +02:00

Thanks for the report, but ni bug here. The bake button reports the amount of memory used by bake cache (on disk or in ram), not the memory used during computation of the fluid (which would be much harder to estimate).

Thanks for the report, but ni bug here. The bake button reports the amount of memory used by bake cache (on disk or in ram), **not** the memory used during computation of the fluid (which would be much harder to estimate).

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Fluid simulation does not show the right ammount of required memory #48429