From 0a63e9ab688cf715d31574ee5bb31025ff22ceec Mon Sep 17 00:00:00 2001
From: Nicolas Patry <patry.nicolas@protonmail.com>
Date: Thu, 7 Sep 2023 17:36:30 +0200
Subject: [PATCH] Fix __call__ vs forward. (#993)

# What does this PR do?

Fix __call__ vs forward.

To reproduce error just launch:
TheBloke/WizardLM-Uncensored-Falcon-7B-GPTQ with gptq (it fails because
falcon code uses `__call__` instead for `forward` calls)

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Fixes # (issue)


## Before submitting
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---
 server/text_generation_server/utils/gptq/exllama.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/server/text_generation_server/utils/gptq/exllama.py b/server/text_generation_server/utils/gptq/exllama.py
index 6a1cf117..7353afb5 100644
--- a/server/text_generation_server/utils/gptq/exllama.py
+++ b/server/text_generation_server/utils/gptq/exllama.py
@@ -69,10 +69,11 @@ def create_exllama_buffers():
     TEMP_STATE, TEMP_DQ = temp_state, temp_dq
 
 
-class Ex4bitLinear:
+class Ex4bitLinear(torch.nn.Module):
     """Linear layer implementation with per-group 4-bit quantization of the weights"""
 
     def __init__(self, qweight, qzeros, scales, g_idx, bias, bits, groupsize):
+        super().__init__()
         global MAX_DQ, MAX_INNER, ACT_ORDER, DEVICE
         assert bits == 4