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It's easier said than done, there's consistently a huge gulf between CPU and GPU memory limits. Even run-of-the-mill consumer desktops can run 128GB of RAM, whi
by jsheard 4y ago
It's easier said than done, there's consistently a huge gulf between CPU and GPU memory limits. Even run-of-the-mill consumer desktops can run 128GB of RAM, which exceeds even the highest end professional GPUs VRAM, and the sky is the limit with workstation and server platforms. AMD EPYC can support 2TB of memory!
- jb1991 4y agoIt’s not just about memory. The path tracing algorithm is a natural fit for CPU threads but very difficult to design for efficient use of GPU threads. It’s very easy to leave many of your GPUs threads idle due to the divergence, or overflowing the registers, and any number of other things that are very natural to path tracing.