atune：add the gcc compilation example

examples/tuning/gcc_compile/README

+1. Prepare the environment
+sh prepare.sh
+2. download stream.c
+wget http://www.cs.virginia.edu/stream/FTP/Code/stream.c
+3. Start to tuning
+atune-adm tuning --project gcc_compile --detail gcc_compile_client.yaml
+4. Restore the environment
+atune-adm tuning --restore --project gcc_compile

examples/tuning/gcc_compile/gcc_compile.sh

+#!/bin/sh
+# Copyright (c) 2020 Huawei Technologies Co., Ltd.
+# A-Tune is licensed under the Mulan PSL v2.
+# You can use this software according to the terms and conditions of the Mulan PSL v2.
+# You may obtain a copy of Mulan PSL v2 at:
+#     http://license.coscl.org.cn/MulanPSL2
+# THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR
+# PURPOSE.
+# See the Mulan PSL v2 for more details.
+# Create: 2020-09-01
+
+path=$(
+  cd "$(dirname "$0")"
+  pwd
+)
+echo "current run path is $path"
+
+tune=generic
+option=O0
+array_size=20000000
+times=10
+offset=1024
+isarch=no
+if [[ $isarch == "yes" ]]; then
+  arch="-march=native"
+fi
+isopenmp=no
+if [[ $isopenmp == "yes" ]]; then
+  openmp="-fopenmp"
+fi
+
+gcc -mtune=$tune $arch -$option $openmp -DSTREAM_ARRAY_SIZE=$array_size -DNTIMES=$times -DOFFSET=$offset $path/stream.c -o $path/stream.o
+$path/stream.o
+echo "file size: `wc -c $path/stream.o`"
+rm -rf $path/stream.o

examples/tuning/gcc_compile/gcc_compile_client.yaml

+project: "gcc_compile"
+engine : "bayes"
+iterations : 50
+random_starts : 10
+
+benchmark : "sh gcc_compile/gcc_compile.sh"
+evaluations :
+  -
+    name: "bandwidth"
+    info:
+        get: "echo '$out' | grep 'Triad:' | awk '{print $2}'"
+        type: "negative"
+        weight: 80
+  -
+    name: "size"
+    info:
+        get: "echo '$out' | grep 'file size:' | awk '{print $3}'"
+        type: "positive"
+        weight: 20
+

examples/tuning/gcc_compile/gcc_compile_server.yaml

+project: "gcc_compile"
+maxiterations: 500
+startworkload: ""
+stopworkload: ""
+object :
+  -
+    name : "option"
+    info :
+        desc : "The gcc compilation options"
+        get : "cat gcc_compile/gcc_compile.sh | grep -i '^option=' | awk -F '=' '{print $2}'"
+        set : "sed -i 's/^option=.*/option=$value/g' gcc_compile/gcc_compile.sh"
+        needrestart : "false"
+        type : "discrete"
+        options :
+          - "O0"
+          - "O1"
+          - "O2"
+          - "O3"
+          - "Os"
+          - "Ofast"
+        dtype : "string"
+  -
+    name : "mtune"
+    info :
+        desc : "Tune to cpu-type everything applicable about the generated code"
+        get : "cat gcc_compile/gcc_compile.sh | grep -i '^tune=' | awk -F '=' '{print $2}'"
+        set : "sed -i 's/^tune=.*/tune=$value/g' gcc_compile/gcc_compile.sh"
+        needrestart : "false"
+        type : "discrete"
+        options :
+          - "generic"
+          - "native"
+        dtype : "string"
+  -
+    name : "march"
+    info :
+        desc : "Generate instructions for the machine type cpu-type"
+        get : "cat gcc_compile/gcc_compile.sh | grep -i '^isarch=' | awk -F '=' '{print $2}'"
+        set : "sed -i 's/^isarch=.*/isarch=$value/g' gcc_compile/gcc_compile.sh"
+        needrestart : "false"
+        type : "discrete"
+        options :
+          - "yes"
+          - "no"
+        dtype : "string"
+  -
+    name : "openmp"
+    info :
+        desc : "Adapts to multi-processor env, the defalut number of threads is the number of CPU threads after the function is enabled."
+        get : "cat gcc_compile/gcc_compile.sh | grep -i '^isopenmp=' | awk -F '=' '{print $2}'"
+        set : "sed -i 's/^isopenmp=.*/isopenmp=$value/g' gcc_compile/gcc_compile.sh"
+        needrestart : "false"
+        type : "discrete"
+        options :
+          - "yes"
+          - "no"
+        dtype : "string"
+  -
+    name : "offset"
+    info :
+        desc : "the array offset"
+        get : "cat gcc_compile/gcc_compile.sh | grep -i '^offset=' | awk -F '=' '{print $2}'"
+        set : "sed -i 's/^offset=.*/offset=$value/g' gcc_compile/gcc_compile.sh"
+        needrestart: "false"
+        type : "continuous"
+        scope :
+          - 1024
+          - 61440
+        dtype : "int"

examples/tuning/gcc_compile/prepare.sh

+#!/bin/sh
+# Copyright (c) 2020 Huawei Technologies Co., Ltd.
+# A-Tune is licensed under the Mulan PSL v2.
+# You can use this software according to the terms and conditions of the Mulan PSL v2.
+# You may obtain a copy of Mulan PSL v2 at:
+#     http://license.coscl.org.cn/MulanPSL2
+# THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR
+# PURPOSE.
+# See the Mulan PSL v2 for more details.
+# Create: 2020-09-01
+
+path=$(
+  cd "$(dirname "$0")"
+  pwd
+)
+
+echo "update the client and server yaml files"
+sed -i "s#sh .*/gcc_compile.sh#sh $path/gcc_compile.sh#g" $path/gcc_compile_client.yaml
+sed -i "s#-c .*/stream.o#-c $path/stream.o#g" $path/gcc_compile_client.yaml
+sed -i "s#cat .*/gcc_compile.sh#cat $path/gcc_compile.sh#g" $path/gcc_compile_server.yaml
+sed -i "s#' .*/gcc_compile.sh#' $path/gcc_compile.sh#g" $path/gcc_compile_server.yaml
+
+echo "copy the server yaml file to /etc/atuned/tuning/"
+cp $path/gcc_compile_server.yaml /etc/atuned/tuning/