Good day everyone!

For some it could be a banal topic, but I'm a bit confused about Karma render stats. Specially about Vram usage.

-Is "load memory" line that is fully accountable due to total Vram usage / requirement (if I would like to optimize my scene as not running out of Vram)

-Is "memory load" line shows all (if Vram) used memory, counting in stack openGL cache, view port memory usage, or it shows just render to disk OR render to mplay OR viewport render action? AKA: Could it be, that "memory" load shows a number within my GPU VRAM amount, but I'm still out of core due to openGL cache / opened viewport OS, background aps..?

- How we can clearly reading out the Actual Vram usage and optimizing our scene to let it fill comfortable in to our Vram amount?


And a side, note Vram, but system ram related question:
If I see numbers as: "450 GB total memory used" and since Mplay is rendering to system RAM, it means that my 128 GB system ram was not enough for the sequence AKA, I had been slowing down Mplay to the level of "render to disk" and I'm actually rendering to my disk by using Mplay?

Thanks in advance for your help!

I'm specially interested in "load memory"
I'm aware of the fact, that mPlay will use RAM not my ssd till the render (till my RAM cap) but I'm still confused about the number, as:
Same scene, same material (I turned off subdiv geo at SOP import and let alone subdiv modifier in Blender, to not mess up the test with dicing, that could play with different numbers between the two engine)
- Blender Cycles showed me 670 MB used Vram
- Houdini Karma XPU (rendered to mPlay) Showed me 1.9 GB "load memory"

Karma converted my image data to .rat, that turned out bigger as my originally used .jpg files (I had been using just color map for this test, 32× 1440 UDIM) but not even the larger .rat files answer the memory load difference (rat files are giving less than 200mb vs the original jpg's)

It can be an important factor when we would like to optimize out scene to let it fit into Vram.

Thanks in advance for the answers, sorry for the doble post, did not wanted to edit the last one.