test Int8DynActInt4WeightLinear

ghstack-source-id: ac9d4fe
ghstack-comment-id: 2430970002
Pull Request resolved: #6450

Author: helunwencser

examples/models/llama/TestInt8DynActInt4WeightLinear.py

@@ -0,0 +1,35 @@
+import torch.cuda
+from torchao.quantization.GPTQ import _check_linear_int4_k, Int8DynActInt4WeightLinear
+
+from torch import nn
+class Attention(nn.Module):
+
+    def __init__(self, device):
+        super().__init__()
+        self.wq = Int8DynActInt4WeightLinear(
+            in_features=2048,
+            out_features=2048,
+            bias=False,
+            device=device,
+            groupsize=32,
+            precision=torch.float32,
+            scales_precision=torch.float32
+        )
+
+    def forward(self, x: torch.tensor):
+        return self.wq.forward(x)
+
+
+def main() -> None:
+    device = "cuda" if torch.cuda.is_available() else "cpu"
+    input = torch.load("file/to/input/tensor", map_location=device)
+    checkpoint = torch.load("/Users/lunwenh/models/1B_spin_new_format/consolidated.00.pth", map_location=device,
+                            mmap=True)
+    for i in range(5):
+        model = Attention(device)
+        model.load_state_dict(checkpoint, strict=False, assign=True)
+
+        print(model.forward(input))
+
+if __name__ == "__main__":
+    main()