Update installation.md (#1675)

* Update installation.md install ninja to speed up installation of tinycuda-nn * Update installation.md * update readme and installation
nerfstudio-project · Mar 31, 2023 · b0dca72 · b0dca72
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diff --git a/README.md b/README.md
@@ -101,14 +101,14 @@ For CUDA 11.3:
 
 ```bash
 pip install torch==1.12.1+cu113 torchvision==0.13.1+cu113 -f https://download.pytorch.org/whl/torch_stable.html
-pip install git+https://github.com/NVlabs/tiny-cuda-nn/#subdirectory=bindings/torch
+pip install ninja git+https://github.com/NVlabs/tiny-cuda-nn/#subdirectory=bindings/torch
 ```
 
 For CUDA 11.7:
 
 ```bash
 pip install torch==1.13.1 torchvision functorch --extra-index-url https://download.pytorch.org/whl/cu117
-pip install git+https://github.com/NVlabs/tiny-cuda-nn/#subdirectory=bindings/torch
+pip install ninja git+https://github.com/NVlabs/tiny-cuda-nn/#subdirectory=bindings/torch
 ```
 
 See [Dependencies](https://github.com/nerfstudio-project/nerfstudio/blob/main/docs/quickstart/installation.md#dependencies)

diff --git a/docs/quickstart/installation.md b/docs/quickstart/installation.md
@@ -79,10 +79,10 @@ pip install torch==1.13.1 torchvision functorch --extra-index-url https://downlo
 
 ### tinycudann
 
-After pytorch, install the torch bindings for tinycudann:
+After pytorch and ninja, install the torch bindings for tinycudann:
 
 ```bash
-pip install git+https://github.com/NVlabs/tiny-cuda-nn/#subdirectory=bindings/torch
+pip install ninja git+https://github.com/NVlabs/tiny-cuda-nn/#subdirectory=bindings/torch
 ```
 
 ## Installing nerfstudio