From 4923cf029a36504a00368abe6b9c8b77e46aa740 Mon Sep 17 00:00:00 2001
From: Muneeb Ahmad <79105382+OttomanZ@users.noreply.github.com>
Date: Mon, 31 Jul 2023 01:24:30 +0500
Subject: [PATCH] Added Proper Documentation for `faiss-gpu` Installation
 (#8492)

### Description
In the LangChain Documentation and Comments, I've Noticed that `pip
install faiss` was mentioned, instead of `pip install faiss-gpu`, since
installing `pip install faiss` results in an error. I've gone ahead and
updated the Documentation, and `faiss.ipynb`. This Change will ensure
ease of use for the end user, trying to install `faiss-gpu`.

### Issue:
Documentation / Comments Related.

### Dependencies:
No Dependencies we're changed only updated the files with the wrong
reference.

### Tag maintainer:
 @rlancemartin, @eyurtsev (Thank You for your contributions :smile: )
---
 docs/extras/integrations/vectorstores/faiss.ipynb | 4 ++--
 libs/langchain/langchain/vectorstores/faiss.py    | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/docs/extras/integrations/vectorstores/faiss.ipynb b/docs/extras/integrations/vectorstores/faiss.ipynb
index 13a5c07fec..b2f75811ae 100644
--- a/docs/extras/integrations/vectorstores/faiss.ipynb
+++ b/docs/extras/integrations/vectorstores/faiss.ipynb
@@ -23,9 +23,9 @@
    },
    "outputs": [],
    "source": [
-    "#!pip install faiss\n",
+    "!pip install faiss-gpu # For CUDA 7.5+ Supported GPU's.\n",
     "# OR\n",
-    "!pip install faiss-cpu"
+    "!pip install faiss-cpu # For CPU Installation"
    ]
   },
   {
diff --git a/libs/langchain/langchain/vectorstores/faiss.py b/libs/langchain/langchain/vectorstores/faiss.py
index 6a23fc8ae8..31930beaff 100644
--- a/libs/langchain/langchain/vectorstores/faiss.py
+++ b/libs/langchain/langchain/vectorstores/faiss.py
@@ -40,7 +40,7 @@ def dependable_faiss_import(no_avx2: Optional[bool] = None) -> Any:
     except ImportError:
         raise ImportError(
             "Could not import faiss python package. "
-            "Please install it with `pip install faiss` "
+            "Please install it with `pip install faiss-gpu` (for CUDA supported GPU) "
             "or `pip install faiss-cpu` (depending on Python version)."
         )
     return faiss