更新readme

Author: yizt

README.md

@@ -1 +1,32 @@
-# crnn.pytorch
+# crnn.pytorch
+
+
+
+## 训练
+
+a) 单机多卡
+```bash
+export CUDA_DEVICE_ORDER="PCI_BUS_ID"
+export CUDA_VISIBLE_DEVICES=1,2,3,4
+python -m torch.distributed.launch --nproc_per_node 4 train.py --device cuda --direction vertical
+```
+
+b) 多机多卡
+```shell
+export NCCL_SOCKET_IFNAME=eth0
+export NCCL_IB_DISABLE=1
+export CUDA_DEVICE_ORDER="PCI_BUS_ID"
+export CUDA_VISIBLE_DEVICES=1,2,3
+python -m torch.distributed.launch --nproc_per_node 3 --nnodes=2 --node_rank=0 \
+--master_port=6066 --master_addr="192.168.0.1" \
+train.py --device cuda --direction vertical 
+
+
+export NCCL_SOCKET_IFNAME=eth0
+export NCCL_IB_DISABLE=1
+export CUDA_DEVICE_ORDER="PCI_BUS_ID"
+export CUDA_VISIBLE_DEVICES=1,2,3
+python -m torch.distributed.launch --nproc_per_node 3 --nnodes=2 --node_rank=1 \
+--master_port=6066 --master_addr="192.168.0.1" \
+train.py --device cuda --direction vertical 
+```