How can I tell how much memory is in use?

[dan_plattner]

Hi all!
How can I tell how much memory is in use when I'm rendering on the GPU?

[savage309]

Which host application are you using? Some integrations like V-Ray for Max have option to show this statistic in the VFB. If there is no such in your host app, try checking the V-Ray log, should be printed there.

Best,
Blago.

[^Lele^]

lastly, you can always rely on stuff like GPU-Z to tell you exactly how much total VRam is in use (including that needed for the screen(s) and browser windows, and so on).

[dan_plattner]

I'm using 3D Max.

[savage309]

lastly, you can always rely on stuff like GPU-Z to tell you exactly how much total VRam is in use (including that needed for the screen(s) and browser windows, and so on).

Thats not quite accurate. V-Ray GPU will often reserve a lot of the GPU memory. GPU-Z will show this memory as "used", where in the V-Ray GPU log you will see it as "reserved" - this is basically memory which is still available for loading assets, but is being allocated from V-Ray GPU (for potential future use).

Otherwise, there is "Show statistics" option in V-Ray GPU Settings, just click that and this data will be shown in the VFB.

Best,
Blago.

[^Lele^]

Blago is very right, of course, but i assumed the left-over VRAM wasn't for rendering, but for something else (f.e.: any accelerated comp tool, or photoshop, and so on.), and in case it was important to know one wouldn't crash for OOR.
If it's to inspect what the render is doing, there is no better way than what Blago mentioned.

[MANUEL_MOUSIOL]

Where is the new memory tracking function of update 2 in GPU mode? I can't find it...