[Inference/Refactor] Refactor compilation mechanism and unified multi hw (#5613)

* refactor compilation mechanism and unified multi hw

* fix file path bug

* add init.py to make pybind a module to avoid relative path error caused by softlink

* delete duplicated micros

* fix micros bug in gcc

extensions/pybind/optimizer/fused_optimizer_cuda.py

@@ -0,0 +1,29 @@
+from ...cuda_extension import _CudaExtension
+from ...utils import get_cuda_cc_flag
+
+
+class FusedOptimizerCudaExtension(_CudaExtension):
+    def __init__(self):
+        super().__init__(name="fused_optim_cuda")
+
+    def sources_files(self):
+        ret = [
+            self.csrc_abs_path(fname)
+            for fname in [
+                "kernel/cuda/multi_tensor_sgd_kernel.cu",
+                "kernel/cuda/multi_tensor_scale_kernel.cu",
+                "kernel/cuda/multi_tensor_adam_kernel.cu",
+                "kernel/cuda/multi_tensor_l2norm_kernel.cu",
+                "kernel/cuda/multi_tensor_lamb_kernel.cu",
+            ]
+        ] + [self.pybind_abs_path("optimizer/optimizer.cpp")]
+        return ret
+
+    def cxx_flags(self):
+        version_dependent_macros = ["-DVERSION_GE_1_1", "-DVERSION_GE_1_3", "-DVERSION_GE_1_5"]
+        return ["-O3"] + version_dependent_macros
+
+    def nvcc_flags(self):
+        extra_cuda_flags = ["-lineinfo"]
+        extra_cuda_flags.extend(get_cuda_cc_flag())
+        return ["-O3", "--use_fast_math"] + extra_cuda_flags + super().nvcc_flags()