memory gpu

[marcoz]

Hallo everyone, just a question:rendering with gpu, if i have two memory card in the same pc having one 3 gb of vram and 2 gb ,can i use the total or the one who have the highest memory?

[benb32]

If you're using both GPUs the scene must fit into the smallest memory. Vray 3.5 does offer many improvements for keeping GPU memory usage low

[marcoz]

So is not convenient use a 1080 gtx 8gb in couple to a 580 gts 3 gb

[benb32]

The GPUs work side by side - a bit like render nodes. Only GPUs that can fit the scene into their own memory will participate in the render.

[benb32]

This FAQ should explain a few other ingredients things for you:
https://docs.chaosgroup.com/display/...X/V-Ray+RT+FAQ

[marcoz]

thanks.I hope to test at soon.

[marcoz]

Being intersted to render with gpu: it's possible know the amount of memory needed?For exemple my scene often need about 10/12 gb ram,the same it's needed in gpu rendering?I read vray 3.5 optimyze the texture, but actually my scene cause an out of mem, with my 660gtx 2gb.