feat: add max-vram based segmented param offload (#1476)

examples/server/README.md

@@ -156,6 +156,8 @@ Context Options:
   -t, --threads <int>                      number of threads to use during computation (default: -1). If threads <= 0,
                                            then threads will be set to the number of CPU physical cores
   --chroma-t5-mask-pad <int>               t5 mask pad size of chroma
+  --max-vram <float>                       maximum VRAM budget in GiB for graph-cut segmented execution. 0 disables
+                                           graph splitting
   --force-sdxl-vae-conv-scale              force use of conv scale on sdxl vae
   --offload-to-cpu                         place the weights in RAM to save VRAM, and automatically load them into VRAM
                                            when needed