# macOS Instructions Requirements - macOS 12.3 Monterey or later - Python - Patience - Apple Silicon* *I haven't tested any of this on Intel Macs but I have read that one person got it to work, so Apple Silicon might not be requried. Things have moved really fast and so these instructions change often and are often out-of-date. One of the problems is that there are so many different ways to run this. We are trying to build a testing setup so that when we make changes it doesn't always break. How to (this hasn't been 100% tested yet): First get the weights checkpoint download started - it's big: 1. Sign up at https://huggingface.co 2. Go to the [Stable diffusion diffusion model page](https://huggingface.co/CompVis/stable-diffusion-v-1-4-original) 3. Accept the terms and click Access Repository: 4. Download [sd-v1-4.ckpt (4.27 GB)](https://huggingface.co/CompVis/stable-diffusion-v-1-4-original/blob/main/sd-v1-4.ckpt) and note where you have saved it (probably the Downloads folder) While that is downloading, open Terminal and run the following commands one at a time. ``` # install brew (and Xcode command line tools): /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)" # install python 3, git, cmake, protobuf: brew install cmake protobuf rust # install miniconda (M1 arm64 version): curl https://repo.anaconda.com/miniconda/Miniconda3-latest-MacOSX-arm64.sh -o Miniconda3-latest-MacOSX-arm64.sh /bin/bash Miniconda3-latest-MacOSX-arm64.sh # clone the repo git clone https://github.com/lstein/stable-diffusion.git cd stable-diffusion # # wait until the checkpoint file has downloaded, then proceed # # create symlink to checkpoint mkdir -p models/ldm/stable-diffusion-v1/ PATH_TO_CKPT="$HOME/Downloads" # or wherever you saved sd-v1-4.ckpt ln -s "$PATH_TO_CKPT/sd-v1-4.ckpt" models/ldm/stable-diffusion-v1/model.ckpt # install packages PIP_EXISTS_ACTION=w CONDA_SUBDIR=osx-arm64 conda env create -f environment-mac.yaml conda activate ldm # only need to do this once python scripts/preload_models.py # run SD! python scripts/dream.py --full_precision # half-precision requires autocast and won't work ``` The original scripts should work as well. ``` python scripts/orig_scripts/txt2img.py --prompt "a photograph of an astronaut riding a horse" --plms ``` Note, `export PIP_EXISTS_ACTION=w` is a precaution to fix `conda env create -f environment-mac.yaml` never finishing in some situations. So it isn't required but wont hurt. After you follow all the instructions and run dream.py you might get several errors. Here's the errors I've seen and found solutions for. ### Is it slow? Be sure to specify 1 sample and 1 iteration. python ./scripts/orig_scripts/txt2img.py --prompt "ocean" --ddim_steps 5 --n_samples 1 --n_iter 1 ### Doesn't work anymore? PyTorch nightly includes support for MPS. Because of this, this setup is inherently unstable. One morning I woke up and it no longer worked no matter what I did until I switched to miniforge. However, I have another Mac that works just fine with Anaconda. If you can't get it to work, please search a little first because many of the errors will get posted and solved. If you can't find a solution please [create an issue](https://github.com/lstein/stable-diffusion/issues). One debugging step is to update to the latest version of PyTorch nightly. conda install pytorch torchvision torchaudio -c pytorch-nightly If `conda env create -f environment-mac.yaml` takes forever run this. git clean -f And run this. conda clean --yes --all Or you could reset Anaconda. conda update --force-reinstall -y -n base -c defaults conda ### "No module named cv2", torch, 'ldm', 'transformers', 'taming', etc. There are several causes of these errors. First, did you remember to `conda activate ldm`? If your terminal prompt begins with "(ldm)" then you activated it. If it begins with "(base)" or something else you haven't. Second, you might've run `./scripts/preload_models.py` or `./scripts/dream.py` instead of `python ./scripts/preload_models.py` or `python ./scripts/dream.py`. The cause of this error is long so it's below. Third, if it says you're missing taming you need to rebuild your virtual environment. conda env remove -n ldm conda env create -f environment-mac.yaml Fourth, If you have activated the ldm virtual environment and tried rebuilding it, maybe the problem could be that I have something installed that you don't and you'll just need to manually install it. Make sure you activate the virtual environment so it installs there instead of globally. conda activate ldm pip install *name* You might also need to install Rust (I mention this again below). ### How many snakes are living in your computer? Here's the reason why you have to specify which python to use. There are several versions of python on macOS and the computer is picking the wrong one. More specifically, preload_models.py and dream.py says to find the first `python3` in the path environment variable. You can see which one it is picking with `which python3`. These are the mostly likely paths you'll see. % which python3 /usr/bin/python3 The above path is part of the OS. However, that path is a stub that asks you if you want to install Xcode. If you have Xcode installed already, /usr/bin/python3 will execute /Library/Developer/CommandLineTools/usr/bin/python3 or /Applications/Xcode.app/Contents/Developer/usr/bin/python3 (depending on which Xcode you've selected with `xcode-select`). % which python3 /opt/homebrew/bin/python3 If you installed python3 with Homebrew and you've modified your path to search for Homebrew binaries before system ones, you'll see the above path. % which python /opt/anaconda3/bin/python If you drop the "3" you get an entirely different python. Note: starting in macOS 12.3, /usr/bin/python no longer exists (it was python 2 anyway). If you have Anaconda installed, this is what you'll see. There is a /opt/anaconda3/bin/python3 also. (ldm) % which python /Users/name/miniforge3/envs/ldm/bin/python This is what you'll see if you have miniforge and you've correctly activated the ldm environment. This is the goal. It's all a mess and you should know [how to modify the path environment variable](https://support.apple.com/guide/terminal/use-environment-variables-apd382cc5fa-4f58-4449-b20a-41c53c006f8f/mac) if you want to fix it. Here's a brief hint of all the ways you can modify it (don't really have the time to explain it all here). - ~/.zshrc - ~/.bash_profile - ~/.bashrc - /etc/paths.d - /etc/path Which one you use will depend on what you have installed except putting a file in /etc/paths.d is what I prefer to do. ### Debugging? Tired of waiting for your renders to finish before you can see if it works? Reduce the steps! The image quality will be horrible but at least you'll get quick feedback. python ./scripts/txt2img.py --prompt "ocean" --ddim_steps 5 --n_samples 1 --n_iter 1 ### OSError: Can't load tokenizer for 'openai/clip-vit-large-patch14'... python scripts/preload_models.py ### "The operator [name] is not current implemented for the MPS device." (sic) Example error. ``` ... NotImplementedError: The operator 'aten::_index_put_impl_' is not current implemented for the MPS device. If you want this op to be added in priority during the prototype phase of this feature, please comment on [https://github.com/pytorch/pytorch/issues/77764](https://github.com/pytorch/pytorch/issues/77764). As a temporary fix, you can set the environment variable `PYTORCH_ENABLE_MPS_FALLBACK=1` to use the CPU as a fallback for this op. WARNING: this will be slower than running natively on MPS. ``` The lstein branch includes this fix in [environment-mac.yaml](https://github.com/lstein/stable-diffusion/blob/main/environment-mac.yaml). ### "Could not build wheels for tokenizers" I have not seen this error because I had Rust installed on my computer before I started playing with Stable Diffusion. The fix is to install Rust. curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh ### How come `--seed` doesn't work? First this: > Completely reproducible results are not guaranteed across PyTorch releases, individual commits, or different platforms. Furthermore, results may not be reproducible between CPU and GPU executions, even when using identical seeds. [PyTorch docs](https://pytorch.org/docs/stable/notes/randomness.html) Second, we might have a fix that at least gets a consistent seed sort of. We're still working on it. ### libiomp5.dylib error? OMP: Error #15: Initializing libiomp5.dylib, but found libomp.dylib already initialized. You are likely using an Intel package by mistake. Be sure to run conda with the environment variable `CONDA_SUBDIR=osx-arm64`, like so: `CONDA_SUBDIR=osx-arm64 conda install ...` This error happens with Anaconda on Macs when the Intel-only `mkl` is pulled in by a dependency. [nomkl](https://stackoverflow.com/questions/66224879/what-is-the-nomkl-python-package-used-for) is a metapackage designed to prevent this, by making it impossible to install `mkl`, but if your environment is already broken it may not work. Do *not* use `os.environ['KMP_DUPLICATE_LIB_OK']='True'` or equivalents as this masks the underlying issue of using Intel packages. ### Not enough memory. This seems to be a common problem and is probably the underlying problem for a lot of symptoms (listed below). The fix is to lower your image size or to add `model.half()` right after the model is loaded. I should probably test it out. I've read that the reason this fixes problems is because it converts the model from 32-bit to 16-bit and that leaves more RAM for other things. I have no idea how that would affect the quality of the images though. See [this issue](https://github.com/CompVis/stable-diffusion/issues/71). ### "Error: product of dimension sizes > 2**31'" This error happens with img2img, which I haven't played with too much yet. But I know it's because your image is too big or the resolution isn't a multiple of 32x32. Because the stable-diffusion model was trained on images that were 512 x 512, it's always best to use that output size (which is the default). However, if you're using that size and you get the above error, try 256 x 256 or 512 x 256 or something as the source image. BTW, 2**31-1 = [2,147,483,647](https://en.wikipedia.org/wiki/2,147,483,647#In_computing), which is also 32-bit signed [LONG_MAX](https://en.wikipedia.org/wiki/C_data_types) in C. ### I just got Rickrolled! Do I have a virus? You don't have a virus. It's part of the project. Here's [Rick](https://github.com/lstein/stable-diffusion/blob/main/assets/rick.jpeg) and here's [the code](https://github.com/lstein/stable-diffusion/blob/69ae4b35e0a0f6ee1af8bb9a5d0016ccb27e36dc/scripts/txt2img.py#L79) that swaps him in. It's a NSFW filter, which IMO, doesn't work very good (and we call this "computer vision", sheesh). Actually, this could be happening because there's not enough RAM. You could try the `model.half()` suggestion or specify smaller output images. ### My images come out black We might have this fixed, we are still testing. There's a [similar issue](https://github.com/CompVis/stable-diffusion/issues/69) on CUDA GPU's where the images come out green. Maybe it's the same issue? Someone in that issue says to use "--precision full", but this fork actually disables that flag. I don't know why, someone else provided that code and I don't know what it does. Maybe the `model.half()` suggestion above would fix this issue too. I should probably test it. ### "view size is not compatible with input tensor's size and stride" ``` File "/opt/anaconda3/envs/ldm/lib/python3.10/site-packages/torch/nn/functional.py", line 2511, in layer_norm return torch.layer_norm(input, normalized_shape, weight, bias, eps, torch.backends.cudnn.enabled) RuntimeError: view size is not compatible with input tensor's size and stride (at least one dimension spans across two contiguous subspaces). Use .reshape(...) instead. ``` Update to the latest version of lstein/stable-diffusion. We were patching pytorch but we found a file in stable-diffusion that we could change instead. This is a 32-bit vs 16-bit problem. ### The processor must support the Intel bla bla bla What? Intel? On an Apple Silicon? Intel MKL FATAL ERROR: This system does not meet the minimum requirements for use of the Intel(R) Math Kernel Library. The processor must support the Intel(R) Supplemental Streaming SIMD Extensions 3 (Intel(R) SSSE3) instructions. The processor must support the Intel(R) Streaming SIMD Extensions 4.2 (Intel(R) SSE4.2) instructions. The processor must support the Intel(R) Advanced Vector Extensions (Intel(R) AVX) instructions. This is due to the Intel `mkl` package getting picked up when you try to install something that depends on it-- Rosetta can translate some Intel instructions but not the specialized ones here. To avoid this, make sure to use the environment variable `CONDA_SUBDIR=osx-arm64`, which restricts the Conda environment to only use ARM packages, and use `nomkl` as described above. ### input types 'tensor<2x1280xf32>' and 'tensor<*xf16>' are not broadcast compatible May appear when just starting to generate, e.g.: ``` dream> clouds Generating: 0%| | 0/1 [00:00' and 'tensor<*xf16>' are not broadcast compatible LLVM ERROR: Failed to infer result type(s). Abort trap: 6 /Users/[...]/opt/anaconda3/envs/ldm/lib/python3.9/multiprocessing/resource_tracker.py:216: UserWarning: resource_tracker: There appear to be 1 leaked semaphore objects to clean up at shutdown warnings.warn('resource_tracker: There appear to be %d ' ``` Macs do not support autocast/mixed-precision. Supply `--full_precision` to use float32 everywhere.