!2660 add alexnet gpu run scripts

Merge pull request !2660 from xubangduo/add-alexnet-scripts

official/cv/alexnet/scripts/run_distribution_gpu.sh

+#!/bin/bash
+# Copyright 2022 Huawei Technologies Co., Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ============================================================================
+# an simple tutorial as follows, more parameters can be setting
+if [ $# != 3 ]
+then
+    echo "Usage: sh run_distribution_gpu.sh [cifar10|imagenet] [DATA_PATH] [CKPT_PATH]"
+exit 1
+fi
+
+BASE_PATH=$(cd ./"`dirname $0`" || exit; pwd)
+if [ $# -ge 1 ]; then
+  if [ $1 == 'imagenet' ]; then
+    CONFIG_FILE="${BASE_PATH}/../config_imagenet.yaml"
+  elif [ $1 == 'cifar10' ]; then
+    CONFIG_FILE="${BASE_PATH}/../cifar10_distribute.yaml"
+  else
+    echo "Unrecognized parameter"
+    exit 1
+  fi
+else
+  CONFIG_FILE="${BASE_PATH}/../default_config.yaml"
+fi
+
+ulimit -u unlimited
+export DEVICE_NUM=8
+export RANK_SIZE=8
+export DATASET_NAME=$1
+export DATA_PATH=$2
+export CKPT_PATH=$3
+
+rm -rf ./train_parallel
+mkdir ./train_parallel
+cp -r ../src ./train_parallel
+cp ../train.py ./train_parallel
+echo "start training"
+cd ./train_parallel ||exit
+env > env.log
+mpirun -n 8 --allow-run-as-root --output-filename log_output --merge-stderr-to-stdout \
+python train.py --config_path=$CONFIG_FILE --dataset_name=$DATASET_NAME \
+--data_path=$DATA_PATH --ckpt_path=$CKPT_PATH --device_target="GPU" > log 2>&1 &
+cd ..