[Bugfix] Temporarily disable gptq_bitblas on ROCm (#17411)

Signed-off-by: Yan Cangang <nalanzeyu@gmail.com>

docs/source/features/quantization/supported_hardware.md

@@ -80,7 +80,7 @@ The table below shows the compatibility of various quantization implementations
   * ✅︎
   * ✅︎
   * ✅︎
-  * ✅︎
+  * ❌
   * ❌
   * ❌
   * ❌

vllm/model_executor/layers/quantization/gptq_bitblas.py

@@ -25,6 +25,7 @@ from vllm.model_executor.parameter import (ChannelQuantScaleParameter,
                                            PackedColumnParameter,
                                            PackedvLLMParameter,
                                            RowvLLMParameter)
+from vllm.platforms import current_platform
 from vllm.scalar_type import scalar_types
 
 logger = init_logger(__name__)
@@ -191,6 +192,10 @@ class GPTQBitBLASConfig(QuantizationConfig):
         sym = quant_config.get("sym")
         desc_act = quant_config.get("desc_act")
 
+        # temporarily disable on ROCm platform
+        if not current_platform.is_cuda():
+            return False
+
         # If we cannot find the info needed in the config, cannot convert.
         if (num_bits is None or group_size is None or sym is None
                 or desc_act is None):