Update README.md

README.md

@@ -89,9 +89,11 @@ Refer to the Provided Files table below to see what files use which methods, and
 On Linux I use the following command line to launch the KoboldCpp UI with OpenCL aceleration and a context size of 4096:
 
 ```
-python ./koboldcpp.py --stream --unbantokens --threads 8 --usecublas --gpulayers 100 longchat-7b-16k.ggmlv3.q4_K_M.bin
+python ./koboldcpp.py --contextsize 4096 --stream --unbantokens --threads 8 --usecublas --gpulayers 100 longchat-7b-16k.ggmlv3.q4_K_M.bin
 ```
 
+Change `--contextsize` to the context size you want - **it must be higher than 2048 else the model will produce gibberish**
+
 Change `--gpulayers 100` to the number of layers you want/are able to offload to the GPU. Remove it if you don't have GPU acceleration.
 
 For OpenCL acceleration, change `--usecublas` to `--useclblast 0 0`. You may need to change the second `0` to `1` if you have both an iGPU and a discrete GPU.