def jobs = ["JobA", "JobB", "JobC"]
def parallelStagesMap = jobs.collectEntries {
 ["${it}" : generateStage(it)]
}
def generateStage(job) {
    return {
        stage("stage: ${job}") {
            stages {
                stage ('complie') {
                    agent xxx
                    steps {
                        echo "${job} complie."
                    }
                } 
                stage(‘build') {
                    steps {
                        echo “${job} build."
                    }
                }
             } 
         }
     }
 }
pipeline {
     agent any 
     stages {
         stage(‘xxx') {
          ...
          }
         stage('parallel stage') {
             steps {
                 script{ 
                     parallel parallelStagesMap 
                 }
             }
         }
     }
 }