fleet test

fastNLP/core/drivers/paddle_driver/initialize_paddle_driver.py

@@ -42,7 +42,7 @@ def initialize_paddle_driver(driver: str, device: Optional[Union[str, int, List[
     # 优先级 user > cuda
     # 判断单机情况 device 的合法性
     # 分布式情况下通过 world_device 判断
-    if user_visible_devices is not None:
+    if user_visible_devices != "":
         _could_use_device_num = len(user_visible_devices.split(","))
     elif cuda_visible_devices is not None:
         _could_use_device_num = len(cuda_visible_devices.split(","))
@@ -51,8 +51,8 @@ def initialize_paddle_driver(driver: str, device: Optional[Union[str, int, List[
     if isinstance(device, int):
         if device < 0 and device != -1:
             raise ValueError("Parameter `device` can only be '-1' when it is smaller than 0.")
-        if device >= _could_use_device_num:
-            raise ValueError("The gpu device that parameter `device` specifies is not existed.")
+        # if device >= _could_use_device_num:
+        #     raise ValueError("The gpu device that parameter `device` specifies is not existed.")
         device = f"gpu:{device}"
     elif isinstance(device, Sequence) and not isinstance(device, str):
         device = list(set(device))

fastNLP/core/drivers/paddle_driver/single_device.py

@@ -1,8 +1,14 @@
+import os
 from typing import Optional, Dict, Union
 
 from .paddle_driver import PaddleDriver
 from fastNLP.envs.imports import _NEED_IMPORT_PADDLE
-from fastNLP.core.utils import auto_param_call, get_paddle_gpu_str
+from fastNLP.core.utils import (
+    auto_param_call,
+    get_paddle_gpu_str,
+    get_paddle_device_id,
+    paddle_move_data_to_device,
+)
 from fastNLP.core.samplers import ReproducibleBatchSampler, ReproducibleIterator
 from fastNLP.core.log import logger
 
@@ -86,8 +92,9 @@ class PaddleSingleDriver(PaddleDriver):
                 self._test_signature_fn = model.forward
 
     def setup(self):
-        paddle.device.set_device(self.model_device)
-        self.model.to(self.model_device)
+        os.environ["CUDA_VISIBLE_DEVICES"] = str(get_paddle_device_id(self.model_device))
+        paddle.device.set_device("gpu:0")
+        self.model.to("gpu:0")
 
     def train_step(self, batch) -> Dict:
         # 如果 batch 是一个 Dict，我们就默认帮其做参数匹配，否则就直接传入到 `train_step` 函数中，让用户自己处理；
@@ -116,6 +123,16 @@ class PaddleSingleDriver(PaddleDriver):
         else:
             return self._test_step(batch)
 
+    def move_data_to_device(self, batch: 'paddle.Tensor'):
+        r"""
+        将数据迁移到指定的机器上；batch 可能是 list 也可能 dict ，或其嵌套结构。
+        在 Paddle 中使用可能会引起因与设置的设备不一致而产生的问题，请注意。
+        在单卡时，由于 CUDA_VISIBLE_DEVICES 始终被限制在一个设备上，因此实际上只会迁移到 `gpu:0`
+
+        :return: 将移动到指定机器上的 batch 对象返回；
+        """
+        return paddle_move_data_to_device(batch, "gpu:0")
+
     def replace_sampler(self, dataloader, dist_sampler: Union[str, ReproducibleBatchSampler, ReproducibleIterator], reproducible: bool = False):
         # 暂时不支持IteratorDataset
         assert dataloader.dataset_kind != _DatasetKind.ITER, \

fastNLP/core/drivers/paddle_driver/utils.py

@@ -272,7 +272,7 @@ def get_device_from_visible(device: Union[str, int]):
     else:
         # 利用 USER_CUDA_VISIBLDE_DEVICES 获取用户期望的设备
         user_visiblde_devices = os.getenv(USER_CUDA_VISIBLE_DEVICES)
-        if user_visiblde_devices is None or user_visiblde_devices != "":
+        if user_visiblde_devices is not None and user_visiblde_devices != "":
             # 不为空，说明用户设置了 CUDA_VISIBLDE_DEVICES
             idx = user_visiblde_devices.split(",")[idx]
         else:

fastNLP/core/metrics/backend/paddle_backend/backend.py

@@ -122,7 +122,6 @@ class PaddleBackend(Backend):
 
     def move_tensor_to_device(self, tensor, device):
         # TODO 如果在这里处理的话，会不会在别的地方引起bug？
-        if is_in_paddle_dist():
-            device = get_device_from_visible(device)
+        device = get_device_from_visible(device)
         return paddle_to(tensor, device)
 

fastNLP/core/metrics/utils.py

@@ -4,17 +4,18 @@ __all__ = [
 
 from typing import Any
 from functools import wraps
-from fastNLP.envs.imports import _NEED_IMPORT_PADDLE
+from fastNLP.envs.imports import _NEED_IMPORT_PADDLE, _NEED_IMPORT_TORCH
 from fastNLP.envs.utils import _module_available
 
 _IS_TORCHMETRICS_AVAILABLE = _module_available('torchmetrics')
-if _IS_TORCHMETRICS_AVAILABLE:
-    from torchmetrics import Metric as torchmetrics_Metric
-
 _IS_ALLENNLP_AVAILABLE = _module_available('allennlp')
 if _IS_ALLENNLP_AVAILABLE:
     from allennlp.training.metrics import Metric as allennlp_Metric
 
+if _NEED_IMPORT_TORCH and _IS_TORCHMETRICS_AVAILABLE:
+    if _IS_TORCHMETRICS_AVAILABLE:
+        from torchmetrics import Metric as torchmetrics_Metric
+
 if _NEED_IMPORT_PADDLE:
     from paddle.metric import Metric as paddle_Metric
 

fastNLP/core/utils/paddle_utils.py

@@ -9,6 +9,7 @@ __all__ = [
 ]
 
 import os
+import re
 from typing import Any, Optional, Union
 
 from fastNLP.envs.imports import _NEED_IMPORT_PADDLE
@@ -42,10 +43,19 @@ def get_paddle_device_id(device: Union[str, int]):
     if isinstance(device, int):
         return device
 
+    device = device.lower()
     if device == "cpu":
         raise ValueError("Cannot get device id from `cpu`.")
 
-    return paddle.device._convert_to_place(device).get_device_id()
+    match_res = re.match(r"gpu:\d+", device)
+    if not match_res:
+        raise ValueError(
+            "The device must be a string which is like 'cpu', 'gpu', 'gpu:x'"
+        )
+    device_id = device.split(':', 1)[1]
+    device_id = int(device_id)
+
+    return device_id
 
 def paddle_move_data_to_device(batch: Any, device: Optional[str] = None,
                               data_device: Optional[str] = None) -> Any:

fastNLP/envs/set_backend.py

@@ -52,21 +52,33 @@ def _set_backend():
     if backend == 'paddle':
         assert _module_available(backend), f"You must have {backend} available to use {backend} backend."
         assert 'paddle' not in sys.modules, "You have to use `set_backend()` before `import paddle`."
-        if 'CUDA_VISIBLE_DEVICES' not in os.environ and 'PADDLE_RANK_IN_NODE' not in os.environ \
-                and 'FLAGS_selected_gpus' not in os.environ:
-            os.environ['CUDA_VISIBLE_DEVICES'] = '0'
-            os.environ[USER_CUDA_VISIBLE_DEVICES] = ''
+        user_visible_devices = os.getenv(USER_CUDA_VISIBLE_DEVICES)
+        if 'PADDLE_RANK_IN_NODE' in os.environ and 'FLAGS_selected_gpus' in os.environ:
+            # 在分布式子进程下，根据 USER_VISIBLE_DEVICES 得到进程真正占有的设备
+            selected_gpus = os.environ['FLAGS_selected_gpus'].split(',')
+            if user_visible_devices is not None and user_visible_devices != "":
+                # 用户通过 CUDA_VISIBLE_DEVICES 启动了分布式训练
+                # 此时经过 set_backend，用户的设置会保存在 USER_CUDA_VISIBLE_DEVICES 中
+                # 我们需要从中找到真正使用的设备编号
+                user_visible_devices = user_visible_devices.split(",")
+                selected_gpus = ",".join([user_visible_devices[int(i)] for i in selected_gpus])
+            else:
+                # 设置 USER_CUDA_VISIBLE_DEVICES 表明用户视角中所有设备可见
+                os.environ[USER_CUDA_VISIBLE_DEVICES] = ""
+            # TODO 这里的 [0] 可能在单个节点多卡的时候有问题
+            os.environ['CUDA_VISIBLE_DEVICES'] = selected_gpus[0]
+            os.environ['FLAGS_selected_gpus'] = ",".join([str(g) for g in range(len(selected_gpus))])
+            os.environ['FLAGS_selected_accelerators'] = ",".join([str(g) for g in range(len(selected_gpus))])
         elif 'CUDA_VISIBLE_DEVICES' in os.environ:
+            # 主进程中，用户设置了 CUDA_VISIBLE_DEVICES
+            # 将用户设置的 CUDA_VISIBLE_DEVICES hack 掉
             CUDA_VISIBLE_DEVICES = os.environ['CUDA_VISIBLE_DEVICES']
             os.environ[USER_CUDA_VISIBLE_DEVICES] = CUDA_VISIBLE_DEVICES
             os.environ['CUDA_VISIBLE_DEVICES'] = CUDA_VISIBLE_DEVICES.split(',')[0]
-        elif 'PADDLE_RANK_IN_NODE' in os.environ and 'FLAGS_selected_gpus' in os.environ:
-            # TODO 这里由于fastNLP需要hack CUDA_VISIBLE_DEVICES，因此需要相应滴修改FLAGS等paddle变量 @xsh
-            CUDA_VISIBLE_DEVICES = os.environ['FLAGS_selected_gpus']
-            os.environ[USER_CUDA_VISIBLE_DEVICES] = CUDA_VISIBLE_DEVICES
-            os.environ['CUDA_VISIBLE_DEVICES'] = CUDA_VISIBLE_DEVICES.split(',')[0]
-            os.environ['FLAGS_selected_gpus'] = "0"
-            os.environ['FLAGS_selected_accelerators'] = "0"
+        else:
+            # 没有设置的话限制在单卡上，防止多进程时占用别的卡
+            os.environ['CUDA_VISIBLE_DEVICES'] = '0'
+            os.environ[USER_CUDA_VISIBLE_DEVICES] = ''
 
     elif backend == 'jittor':
         assert _module_available(backend), f"You must have {backend} available to use {backend} backend."

fastNLP/envs/set_env_on_import.py

@@ -36,8 +36,14 @@ def set_env_on_import_torch():
 
 # TODO paddle may need set this
 def set_env_on_import_paddle():
-    # todo 需要设置 FASTNLP_GLOBAL_RANK 和 FASTNLP_BACKEND_LAUNCH
-    pass
+    # todo 需要设置 FASTNLP_GLOBAL_RANK 和 FASTNLP_LAUNCH_PROCESS
+    if "PADDLE_TRANERS_NUM" in os.environ and "PADDLE_TRAINER_ID" in os.environ \
+        and "PADDLE_RANK_IN_NODE" in os.environ:
+        # 检测到了分布式环境的环境变量
+        os.environ[FASTNLP_GLOBAL_RANK] = os.environ["PADDLE_TRAINER_ID"]
+        # 如果不是由 fastnlp 启动的
+        if FASTNLP_DISTRIBUTED_CHECK not in os.environ:
+            os.environ[FASTNLP_BACKEND_LAUNCH] = "1"
 
 # TODO jittor may need set this
 def set_env_on_import_jittor():