[DCU] avoid rtc trans kernel bug (need fix)

build_tools/pytorch.py

@@ -79,11 +79,11 @@ def setup_pytorch_extension(
                 ]
             )
 
-        if bool(int(os.getenv("NVTE_BUILD_SUPPRESS_RETURN_TYPE_WARNING", "0"))):
+        if bool(int(os.getenv("NVTE_BUILD_SUPPRESS_RETURN_TYPE_WARNING", "1"))):
             nvcc_flags.append("-Wno-return-type")
             cxx_flags.append("-Wno-return-type")
 
-        if bool(int(os.getenv("NVTE_BUILD_SUPPRESS_SIGN_COMPARE", "0"))):
+        if bool(int(os.getenv("NVTE_BUILD_SUPPRESS_SIGN_COMPARE", "1"))):
             nvcc_flags.append("-Wno-sign-compare")
             cxx_flags.append("-Wno-sign-compare")
             

tests/pytorch/distributed/test_cast_master_weights_to_fp8.py

@@ -9,7 +9,7 @@ from pathlib import Path
 import pytest
 import torch
 from transformer_engine.pytorch.fp8 import FP8GlobalStateManager
-# NVTE_INT8_SIM_FP8=1 torchrun --nproc_per_node=4 run_cast_master_weights_to_fp8.py --quantization fp8_block
+# NVTE_DISABLE_NVRTC=1 NVTE_INT8_SIM_FP8=1 torchrun --nproc_per_node=4 run_cast_master_weights_to_fp8.py --quantization fp8_block
 
 if torch.cuda.device_count() < 2:
     pytest.skip("cast_master_weights_to_fp8 test needs at least 2 GPUs.")

transformer_engine/pytorch/tensor/utils.py

@@ -437,7 +437,7 @@ def _cast_master_weights_to_fp8_blockwise_scaling(
         # We cannot create columnwise data here because users (like megatron) may want to overlap
         # the all-gather of model weights and forward process, so the model weight is not updated
         # at this moment.
-        model_weight.update_usage(rowwise_usage=True, columnwise_usage=False) # May cause core dump in iter 2
+        model_weight.update_usage(rowwise_usage=True, columnwise_usage=False)
 
         # If master weight is None, it means that the master weight of the current model weight
         # is in other DP ranks.