From 247678afc7c74c98f64e8d19f67355d128946974 Mon Sep 17 00:00:00 2001
From: Ben Sima <ben@bsima.me>
Date: Thu, 10 Aug 2023 21:11:23 -0400
Subject: Add llama-cpp and exllama

---
 Biz/Bild/Deps/exllama.nix | 64 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 64 insertions(+)
 create mode 100644 Biz/Bild/Deps/exllama.nix

(limited to 'Biz/Bild/Deps/exllama.nix')

diff --git a/Biz/Bild/Deps/exllama.nix b/Biz/Bild/Deps/exllama.nix
new file mode 100644
index 0000000..54d6df1
--- /dev/null
+++ b/Biz/Bild/Deps/exllama.nix
@@ -0,0 +1,64 @@
+{ lib
+, sources
+, buildPythonPackage
+, pythonOlder
+, fetchFromGitHub
+, torch # tested on 2.0.1 and 2.1.0 (nightly) with cu118
+, safetensors
+, sentencepiece
+, ninja
+, cudaPackages
+, addOpenGLRunpath
+, which
+, gcc11 # cuda 11.7 requires g++ <12
+}:
+
+buildPythonPackage rec {
+  pname = "exllama";
+  version = sources.exllama.rev;
+  format = "setuptools";
+  disabled = pythonOlder "3.9";
+
+  src = sources.exllama;
+
+  # I only care about compiling for the Ampere architecture, which is what my
+  # RTX 3090 TI is, and for some reason (nix sandbox?) the torch extension
+  # builder
+  # cannot autodetect the arch
+  TORCH_CUDA_ARCH_LIST = "8.0;8.6+PTX";
+
+  CUDA_HOME = "${cudaPackages.cuda_nvcc}";
+
+  nativeBuildInputs = [
+    gcc11
+    which
+    addOpenGLRunpath
+    cudaPackages.cuda_nvcc
+    cudaPackages.cuda_cudart
+  ];
+
+  propagatedBuildInputs = [
+    torch safetensors sentencepiece ninja
+    cudaPackages.cudatoolkit
+  ];
+
+  doCheck = false;  # no tests currently
+  pythonImportsCheck = [
+    "exllama"
+    "exllama.cuda_ext"
+    "exllama.generator"
+    "exllama.lora"
+    "exllama.model"
+    "exllama.tokenizer"
+  ];
+
+  meta = with lib; {
+    description = ''
+      A more memory-efficient rewrite of the HF transformers implementation of
+      Llama for use with quantized weights.
+    '';
+    homepage = "https://github.com/jllllll/exllama";
+    license = licenses.mit;
+    maintainers = with maintainers; [ bsima ];
+  };
+}
-- 
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