Refactor code storage logic for trial (#2403)

src/nni_manager/training_service/kubernetes/frameworkcontroller/frameworkcontrollerTrainingService.ts

@@ -3,6 +3,7 @@
 
 'use strict';
 
+import * as assert from 'assert';
 import * as cpp from 'child-process-promise';
 import * as fs from 'fs';
 import * as path from 'path';
@@ -72,6 +73,11 @@ class FrameworkControllerTrainingService extends KubernetesTrainingService imple
             this.kubernetesRestServerPort = restServer.clusterRestServerPort;
         }
 
+        // wait upload of code Dir to finish
+        if (this.copyExpCodeDirPromise !== undefined) {
+            await this.copyExpCodeDirPromise;
+        }
+
         const trialJobId: string = uniqueString(5);
         // Set trial's NFS working folder
         const trialWorkingFolder: string = path.join(this.CONTAINER_MOUNT_PATH, 'nni', getExperimentId(), trialJobId);
@@ -81,8 +87,8 @@ class FrameworkControllerTrainingService extends KubernetesTrainingService imple
         this.generateContainerPort();
         await this.prepareRunScript(trialLocalTempFolder, trialJobId, trialWorkingFolder, form);
 
-        //upload code files
-        const trialJobOutputUrl: string = await this.uploadCodeFiles(trialJobId, trialLocalTempFolder);
+        //wait upload of script files to finish
+        const trialJobOutputUrl: string = await this.uploadFolder(trialLocalTempFolder, `nni/${getExperimentId()}/${trialJobId}`);
         let initStatus: TrialJobStatus = 'WAITING';
         if (!trialJobOutputUrl) {
             initStatus = 'FAILED';
@@ -151,6 +157,8 @@ class FrameworkControllerTrainingService extends KubernetesTrainingService imple
                 // Validate to make sure codeDir doesn't have too many files
                 try {
                     await validateCodeDir(this.fcTrialConfig.codeDir);
+                    //upload codeDir to storage
+                    this.copyExpCodeDirPromise = this.uploadFolder(this.fcTrialConfig.codeDir, `nni/${getExperimentId()}/nni-code`);
                 } catch (error) {
                     this.log.error(error);
 
@@ -171,41 +179,31 @@ class FrameworkControllerTrainingService extends KubernetesTrainingService imple
     }
 
     /**
-     * upload code files to nfs or azureStroage
-     * @param trialJobId
-     * @param trialLocalTempFolder
-     * return: trialJobOutputUrl
+     * upload local folder to nfs or azureStroage
      */
-    private async uploadCodeFiles(trialJobId: string, trialLocalTempFolder: string): Promise<string> {
+    private async uploadFolder(srcDirectory: string, destDirectory: string): Promise<string> {
         if (this.fcClusterConfig === undefined) {
             throw new Error('Kubeflow Cluster config is not initialized');
         }
 
-        if (this.fcTrialConfig === undefined) {
-            throw new Error('Kubeflow trial config is not initialized');
-        }
+        assert(this.fcClusterConfig.storage === undefined
+            || this.fcClusterConfig.storage === 'azureStorage'
+            || this.fcClusterConfig.storage === 'nfs');
 
-        let trialJobOutputUrl: string = '';
-
-        if (this.fcClusterConfig.storageType === 'azureStorage') {
-            const azureFrameworkControllerClusterConfig: FrameworkControllerClusterConfigAzure =
-                      <FrameworkControllerClusterConfigAzure>this.fcClusterConfig;
-            trialJobOutputUrl = await this.uploadFilesToAzureStorage(trialJobId, trialLocalTempFolder, this.fcTrialConfig.codeDir,
-                 azureFrameworkControllerClusterConfig.uploadRetryCount);
-        } else if (this.fcClusterConfig.storageType === 'nfs') {
-            const nfsFrameworkControllerClusterConfig: FrameworkControllerClusterConfigNFS =
-              <FrameworkControllerClusterConfigNFS>this.fcClusterConfig;
-            // Creat work dir for current trial in NFS directory
-            await cpp.exec(`mkdir -p ${this.trialLocalNFSTempFolder}/nni/${getExperimentId()}/${trialJobId}`);
-            // Copy code files from local dir to NFS mounted dir
-            await cpp.exec(`cp -r ${trialLocalTempFolder}/* ${this.trialLocalNFSTempFolder}/nni/${getExperimentId()}/${trialJobId}/.`);
-            // Copy codeDir to NFS mounted dir
-            await cpp.exec(`cp -r ${this.fcTrialConfig.codeDir}/* ${this.trialLocalNFSTempFolder}/nni/${getExperimentId()}/${trialJobId}/.`);
-            const nfsConfig: NFSConfig = nfsFrameworkControllerClusterConfig.nfs;
-            trialJobOutputUrl = `nfs://${nfsConfig.server}:${path.join(nfsConfig.path, 'nni', getExperimentId(), trialJobId, 'output')}`;
+        if (this.fcClusterConfig.storage === 'azureStorage') {
+            if (this.azureStorageClient === undefined) {
+                throw new Error('azureStorageClient is not initialized');
             }
-
-        return Promise.resolve(trialJobOutputUrl);
+            const fcClusterConfigAzure: FrameworkControllerClusterConfigAzure = <FrameworkControllerClusterConfigAzure>this.fcClusterConfig;
+            return await this.uploadFolderToAzureStorage(srcDirectory, destDirectory, fcClusterConfigAzure.uploadRetryCount);
+        } else if (this.fcClusterConfig.storage === 'nfs' || this.fcClusterConfig.storage === undefined) {
+            await cpp.exec(`mkdir -p ${this.trialLocalNFSTempFolder}/${destDirectory}`);
+            await cpp.exec(`cp -r ${srcDirectory}/* ${this.trialLocalNFSTempFolder}/${destDirectory}/.`);
+            const fcClusterConfigNFS: FrameworkControllerClusterConfigNFS = <FrameworkControllerClusterConfigNFS>this.fcClusterConfig;
+            const nfsConfig: NFSConfig = fcClusterConfigNFS.nfs;
+            return `nfs://${nfsConfig.server}:${destDirectory}`;
+        }
+        return '';
     }
 
     /**

src/nni_manager/training_service/kubernetes/kubeflow/kubeflowTrainingService.ts

@@ -74,14 +74,20 @@ class KubeflowTrainingService extends KubernetesTrainingService implements Kuber
             const restServer: KubeflowJobRestServer = component.get(KubeflowJobRestServer);
             this.kubernetesRestServerPort = restServer.clusterRestServerPort;
         }
+
+        // upload code Dir to storage
+        if (this.copyExpCodeDirPromise !== undefined) {
+            await this.copyExpCodeDirPromise;
+        }
+
         const trialJobId: string = uniqueString(5);
         const trialWorkingFolder: string = path.join(this.CONTAINER_MOUNT_PATH, 'nni', getExperimentId(), trialJobId);
         const kubeflowJobName: string = `nni-exp-${this.experimentId}-trial-${trialJobId}`.toLowerCase();
         const trialLocalTempFolder: string = path.join(getExperimentRootDir(), 'trials-local', trialJobId);
         //prepare the runscript
         await this.prepareRunScript(trialLocalTempFolder, trialJobId, trialWorkingFolder, form);
-        //upload files to sotrage
-        const trialJobOutputUrl: string = await this.uploadCodeFiles(trialJobId, trialLocalTempFolder);
+        //upload script files to sotrage
+        const trialJobOutputUrl: string = await this.uploadFolder(trialLocalTempFolder, `nni/${getExperimentId()}/${trialJobId}`);
         let initStatus: TrialJobStatus = 'WAITING';
         if (!trialJobOutputUrl) {
             initStatus = 'FAILED';
@@ -152,6 +158,8 @@ class KubeflowTrainingService extends KubernetesTrainingService implements Kuber
                 // Validate to make sure codeDir doesn't have too many files
                 try {
                     await validateCodeDir(this.kubeflowTrialConfig.codeDir);
+                    //upload codeDir to storage
+                    this.copyExpCodeDirPromise = this.uploadFolder(this.kubeflowTrialConfig.codeDir, `nni/${getExperimentId()}/nni-code`);
                 } catch (error) {
                     this.log.error(error);
 
@@ -172,12 +180,9 @@ class KubeflowTrainingService extends KubernetesTrainingService implements Kuber
     }
 
     /**
-     * upload code files to nfs or azureStroage
-     * @param trialJobId
-     * @param trialLocalTempFolder
-     * return: trialJobOutputUrl
+     * upload local folder to nfs or azureStroage
      */
-    private async uploadCodeFiles(trialJobId: string, trialLocalTempFolder: string): Promise<string> {
+    private async uploadFolder(srcDirectory: string, destDirectory: string): Promise<string> {
         if (this.kubeflowClusterConfig === undefined) {
             throw new Error('Kubeflow Cluster config is not initialized');
         }
@@ -186,8 +191,6 @@ class KubeflowTrainingService extends KubernetesTrainingService implements Kuber
             throw new Error('Kubeflow Trial config is not initialized');
         }
 
-        let trialJobOutputUrl: string = '';
-
         assert(this.kubeflowClusterConfig.storage === undefined
             || this.kubeflowClusterConfig.storage === 'azureStorage'
             || this.kubeflowClusterConfig.storage === 'nfs');
@@ -197,20 +200,15 @@ class KubeflowTrainingService extends KubernetesTrainingService implements Kuber
                 throw new Error('azureStorageClient is not initialized');
             }
             const azureKubeflowClusterConfig: KubeflowClusterConfigAzure = <KubeflowClusterConfigAzure>this.kubeflowClusterConfig;
-            trialJobOutputUrl = await this.uploadFilesToAzureStorage(trialJobId, trialLocalTempFolder, this.kubeflowTrialConfig.codeDir, azureKubeflowClusterConfig.uploadRetryCount);
+            return await this.uploadFolderToAzureStorage(srcDirectory, destDirectory, azureKubeflowClusterConfig.uploadRetryCount);
         } else if (this.kubeflowClusterConfig.storage === 'nfs' || this.kubeflowClusterConfig.storage === undefined) {
+            await cpp.exec(`mkdir -p ${this.trialLocalNFSTempFolder}/${destDirectory}`);
+            await cpp.exec(`cp -r ${srcDirectory}/* ${this.trialLocalNFSTempFolder}/${destDirectory}/.`);
             const nfsKubeflowClusterConfig: KubeflowClusterConfigNFS = <KubeflowClusterConfigNFS>this.kubeflowClusterConfig;
-            // Creat work dir for current trial in NFS directory
-            await cpp.exec(`mkdir -p ${this.trialLocalNFSTempFolder}/nni/${getExperimentId()}/${trialJobId}`);
-            // Copy script files from local dir to NFS mounted dir
-            await cpp.exec(`cp -r ${trialLocalTempFolder}/* ${this.trialLocalNFSTempFolder}/nni/${getExperimentId()}/${trialJobId}/.`);
-            // Copy codeDir to NFS mounted dir
-            await cpp.exec(`cp -r ${this.kubeflowTrialConfig.codeDir}/* ${this.trialLocalNFSTempFolder}/nni/${getExperimentId()}/${trialJobId}/.`);
             const nfsConfig: NFSConfig = nfsKubeflowClusterConfig.nfs;
-            trialJobOutputUrl = `nfs://${nfsConfig.server}:${path.join(nfsConfig.path, 'nni', getExperimentId(), trialJobId, 'output')}`;
+            return `nfs://${nfsConfig.server}:${destDirectory}`;
         }
-
-        return Promise.resolve(trialJobOutputUrl);
+        return '';
     }
 
     private async prepareRunScript(trialLocalTempFolder: string, trialJobId: string, trialWorkingFolder: string,

src/nni_manager/training_service/kubernetes/kubernetesData.ts

@@ -39,7 +39,7 @@ export class KubernetesTrialJobDetail implements TrialJobDetail {
 export const kubernetesScriptFormat: string =
 `#!/bin/bash
 export NNI_PLATFORM={0}
-export NNI_SYS_DIR=$PWD/nni/{1}
+export NNI_SYS_DIR={1}
 export NNI_OUTPUT_DIR={2}
 export MULTI_PHASE=false
 export NNI_TRIAL_JOB_ID={3}
@@ -49,7 +49,7 @@ export NNI_TRIAL_SEQ_ID={6}
 {7}
 mkdir -p $NNI_SYS_DIR
 mkdir -p $NNI_OUTPUT_DIR
-cp -rT $NNI_CODE_DIR $NNI_SYS_DIR
+cp -r $NNI_CODE_DIR/. $NNI_SYS_DIR
 cd $NNI_SYS_DIR
 sh install_nni.sh
 python3 -m nni_trial_tool.trial_keeper --trial_command '{8}' --nnimanager_ip {9} --nnimanager_port {10} \

src/nni_manager/training_service/kubernetes/kubernetesTrainingService.ts

@@ -49,6 +49,8 @@ abstract class KubernetesTrainingService {
     protected kubernetesClusterConfig?: KubernetesClusterConfig;
     protected versionCheck: boolean = true;
     protected logCollection: string;
+    protected copyExpCodeDirPromise?: Promise<string>;
+    protected expContainerCodeFolder: string;
 
     constructor() {
         this.log = getLogger();
@@ -57,6 +59,7 @@ abstract class KubernetesTrainingService {
         this.trialLocalNFSTempFolder = path.join(getExperimentRootDir(), 'trials-nfs-tmp');
         this.experimentId = getExperimentId();
         this.CONTAINER_MOUNT_PATH = '/tmp/mount';
+        this.expContainerCodeFolder = path.join(this.CONTAINER_MOUNT_PATH, 'nni', this.experimentId, 'nni-code');
         this.genericK8sClient = new GeneralK8sClient();
         this.logCollection = 'none';
     }
@@ -272,11 +275,11 @@ abstract class KubernetesTrainingService {
         const runScript: string = String.Format(
             kubernetesScriptFormat,
             platform,
-            trialJobId,
+            trialWorkingFolder,
             path.join(trialWorkingFolder, 'output', `${roleName}_output`),
             trialJobId,
             getExperimentId(),
-            trialWorkingFolder,
+            this.expContainerCodeFolder,
             trialSequenceId,
             nvidiaScript,
             command,
@@ -330,50 +333,44 @@ abstract class KubernetesTrainingService {
         return registrySecretName;
     }
     
-    protected async uploadFilesToAzureStorage(trialJobId: string, trialLocalTempFolder: string, codeDir: string, uploadRetryCount: number | undefined): Promise<string> {
+    /**
+     * upload local directory to azureStorage
+     * @param srcDirectory the source directory of local folder
+     * @param destDirectory the target directory in azure
+     * @param uploadRetryCount the retry time when upload failed
+     */
+    protected async uploadFolderToAzureStorage(srcDirectory: string, destDirectory: string, uploadRetryCount: number | undefined): Promise<string> {
         if (this.azureStorageClient === undefined) {
             throw new Error('azureStorageClient is not initialized');
         }
-        let trialJobOutputUrl: string = '';
         let retryCount: number = 1;
         if(uploadRetryCount) {
             retryCount = uploadRetryCount;
         }
-        let resultUploadNNIScript: boolean = false;
-        let resultUploadCodeFile: boolean = false;
+        let uploadSuccess: boolean = false;
+        let folderUriInAzure = '';
         try {
             do {
-                //upload local files, including scripts for running the trial and configuration (e.g., hyperparameters) for the trial, to azure storage
-                if(!resultUploadNNIScript) {
-                    resultUploadNNIScript = await AzureStorageClientUtility.uploadDirectory(this.azureStorageClient,
-                        `nni/${getExperimentId()}/${trialJobId}`, this.azureStorageShare,
-                        `${trialLocalTempFolder}`);
-                }
-                //upload code files to azure storage
-                if(!resultUploadCodeFile) {
-                    resultUploadCodeFile = await AzureStorageClientUtility.uploadDirectory(this.azureStorageClient,
-                        `nni/${getExperimentId()}/${trialJobId}`, this.azureStorageShare,
-                        `${codeDir}`);
-                }
-                if (resultUploadNNIScript && resultUploadCodeFile) {
-                    trialJobOutputUrl = `https://${this.azureStorageAccountName}.file.core.windows.net/${this.azureStorageShare}` + 
-                    `/${path.join('nni', getExperimentId(), trialJobId, 'output')}`;
-                    break;
-                } else {
+                uploadSuccess = await AzureStorageClientUtility.uploadDirectory(
+                    this.azureStorageClient,
+                    `${destDirectory}`, 
+                    this.azureStorageShare,
+                    `${srcDirectory}`);
+                if (!uploadSuccess) {
                     //wait for 5 seconds to re-upload files
                     await delay(5000);
                     this.log.info('Upload failed, Retry: upload files to azure-storage');
+                } else {
+                    folderUriInAzure = `https://${this.azureStorageAccountName}.file.core.windows.net/${this.azureStorageShare}/${destDirectory}`;
+                    break;
                 }
             } while (retryCount-- >= 0)
         } catch (error) {
             this.log.error(error);
             //return a empty url when got error
-            return Promise.resolve("");
-        }
-        if(!trialJobOutputUrl) {
-            this.log.info(`Retry-count is used up, upload files to azureStorage for trial ${trialJobId} failed!`);
+            return Promise.resolve('');
         }
-        return Promise.resolve(trialJobOutputUrl);
+        return Promise.resolve(folderUriInAzure);
     }
      
 }

src/nni_manager/training_service/local/localTrainingService.ts

@@ -361,6 +361,9 @@ class LocalTrainingService implements TrainingService {
         trialJobDetail: TrialJobDetail,
         resource: { gpuIndices: number[] },
         gpuNum: number | undefined): { key: string; value: string }[] {
+            if (this.localTrialConfig === undefined) {
+                throw new Error('localTrialConfig is not initialized!');
+            }
             const envVariables: { key: string; value: string }[] = [
                 { key: 'NNI_PLATFORM', value: 'local' },
                 { key: 'NNI_EXP_ID', value: this.experimentId },
@@ -368,7 +371,8 @@ class LocalTrainingService implements TrainingService {
                 { key: 'NNI_TRIAL_JOB_ID', value: trialJobDetail.id },
                 { key: 'NNI_OUTPUT_DIR', value: trialJobDetail.workingDirectory },
                 { key: 'NNI_TRIAL_SEQ_ID', value: trialJobDetail.form.sequenceId.toString() },
-            { key: 'MULTI_PHASE', value: this.isMultiPhase.toString() }
+                { key: 'MULTI_PHASE', value: this.isMultiPhase.toString() },
+                { key: 'NNI_CODE_DIR', value: this.localTrialConfig.codeDir}
             ];
             if (gpuNum !== undefined) {
                 envVariables.push({
@@ -473,12 +477,16 @@ class LocalTrainingService implements TrainingService {
     private getScript(localTrialConfig: TrialConfig, workingDirectory: string): string[] {
         const script: string[] = [];
         if (process.platform === 'win32') {
+            script.push(`Copy-Item $env:NNI_CODE_DIR\\* -Destination $env:NNI_SYS_DIR -Recurse`);
+            script.push(`cd $env:NNI_SYS_DIR`);
             script.push(
                 `cmd.exe /c ${localTrialConfig.command} 2>"${path.join(workingDirectory, 'stderr')}"`,
                 `$NOW_DATE = [int64](([datetime]::UtcNow)-(get-date "1/1/1970")).TotalSeconds`,
                 `$NOW_DATE = "$NOW_DATE" + (Get-Date -Format fff).ToString()`,
                 `Write $LASTEXITCODE " " $NOW_DATE  | Out-File "${path.join(workingDirectory, '.nni', 'state')}" -NoNewline -encoding utf8`);
         } else {
+            script.push(`cp -r $NNI_CODE_DIR/. $NNI_SYS_DIR`);
+            script.push(`cd $NNI_SYS_DIR`);
             script.push(`eval ${localTrialConfig.command} 2>"${path.join(workingDirectory, 'stderr')}"`);
             if (process.platform === 'darwin') {
                 // https://superuser.com/questions/599072/how-to-get-bash-execution-time-in-milliseconds-under-mac-os-x
@@ -506,7 +514,6 @@ class LocalTrainingService implements TrainingService {
         if (process.platform !== 'win32') {
             runScriptContent.push('#!/bin/bash');
         }
-        runScriptContent.push(`cd '${this.localTrialConfig.codeDir}'`);
         for (const variable of variables) {
             runScriptContent.push(setEnvironmentVariable(variable));
         }

src/nni_manager/training_service/pai/paiK8S/paiK8SData.ts

@@ -31,7 +31,6 @@ fi`;
 
 export const PAI_K8S_TRIAL_COMMAND_FORMAT: string =
 `export NNI_PLATFORM=pai NNI_SYS_DIR={0} NNI_OUTPUT_DIR={1} NNI_TRIAL_JOB_ID={2} NNI_EXP_ID={3} NNI_TRIAL_SEQ_ID={4} MULTI_PHASE={5} \
-&& ls $NNI_SYS_DIR \
-&& cd $NNI_SYS_DIR && sh install_nni.sh \
-&& python3 -m nni_trial_tool.trial_keeper --trial_command '{6}' --nnimanager_ip '{7}' --nnimanager_port '{8}' \
---nni_manager_version '{9}' --log_collection '{10}'`;
+&& NNI_CODE_DIR={6} && cp -r $NNI_CODE_DIR/. $NNI_SYS_DIR && cd $NNI_SYS_DIR && sh install_nni.sh \
+&& python3 -m nni_trial_tool.trial_keeper --trial_command '{7}' --nnimanager_ip '{8}' --nnimanager_port '{9}' \
+--nni_manager_version '{10}' --log_collection '{11}'`;

src/nni_manager/training_service/pai/paiK8S/paiK8STrainingService.ts

@@ -53,6 +53,7 @@ const yaml = require('js-yaml');
 @component.Singleton
 class PAIK8STrainingService extends PAITrainingService {
     protected paiTrialConfig: NNIPAIK8STrialConfig | undefined;
+    private copyExpCodeDirPromise?: Promise<void>;
     private paiJobConfig: undefined;
     private nniVersion: string | undefined;
     constructor() {
@@ -78,7 +79,7 @@ class PAIK8STrainingService extends PAITrainingService {
                 }
                 break;
 
-            case TrialConfigMetadataKey.TRIAL_CONFIG:
+            case TrialConfigMetadataKey.TRIAL_CONFIG: {
                 if (this.paiClusterConfig === undefined) {
                     this.log.error('pai cluster config is not initialized');
                     break;
@@ -86,10 +87,15 @@ class PAIK8STrainingService extends PAITrainingService {
                 this.paiTrialConfig = <NNIPAIK8STrialConfig>JSON.parse(value);
                 // Validate to make sure codeDir doesn't have too many files
                 await validateCodeDir(this.paiTrialConfig.codeDir);
+                const nniManagerNFSExpCodeDir = path.join(this.paiTrialConfig.nniManagerNFSMountPath, this.experimentId, 'nni-code');
+                await execMkdir(nniManagerNFSExpCodeDir);
+                //Copy codeDir files to local working folder
+                this.copyExpCodeDirPromise = execCopydir(this.paiTrialConfig.codeDir, nniManagerNFSExpCodeDir);
                 if (this.paiTrialConfig.paiConfigPath) {
                     this.paiJobConfig = yaml.safeLoad(fs.readFileSync(this.paiTrialConfig.paiConfigPath, 'utf8'));
                 }
                 break;
+            }
             case TrialConfigMetadataKey.VERSION_CHECK:
                 this.versionCheck = (value === 'true' || value === 'True');
                 this.nniVersion = this.versionCheck ? await getVersion() : '';
@@ -152,6 +158,7 @@ class PAIK8STrainingService extends PAITrainingService {
         if (this.paiTrialConfig === undefined) {
             throw new Error('trial config is not initialized');
         }
+        const containerNFSExpCodeDir = `${this.paiTrialConfig.containerNFSMountPath}/${this.experimentId}/'nni-code`;
         const containerWorkingDir: string = `${this.paiTrialConfig.containerNFSMountPath}/${this.experimentId}/${trialJobDetail.id}`;
         const nniManagerIp: string = this.nniManagerIpConfig ? this.nniManagerIpConfig.nniManagerIp : getIPV4Address();
         const nniPaiTrialCommand: string = String.Format(
@@ -162,6 +169,7 @@ class PAIK8STrainingService extends PAITrainingService {
             this.experimentId,
             trialJobDetail.form.sequenceId,
             this.isMultiPhase,
+            containerNFSExpCodeDir,
             command,
             nniManagerIp,
             this.paiRestServerPort,
@@ -264,15 +272,18 @@ class PAIK8STrainingService extends PAITrainingService {
             throw new Error('paiJobRestServer is not initialized');
         }
 
+        // Make sure experiment code files is copied from local to NFS
+        if (this.copyExpCodeDirPromise !== undefined) {
+            await this.copyExpCodeDirPromise;
+        }
+
         this.paiRestServerPort = this.paiJobRestServer.clusterRestServerPort;
 
         // Step 1. Prepare PAI job configuration
         //create trial local working folder locally.
         await execMkdir(trialJobDetail.logPath);
-
-        const runScriptContent: string = CONTAINER_INSTALL_NNI_SHELL_FORMAT;
         // Write NNI installation file to local files
-        await fs.promises.writeFile(path.join(trialJobDetail.logPath, 'install_nni.sh'), runScriptContent, { encoding: 'utf8' });
+        await fs.promises.writeFile(path.join(trialJobDetail.logPath, 'install_nni.sh'), CONTAINER_INSTALL_NNI_SHELL_FORMAT, { encoding: 'utf8' });
 
         // Write file content ( parameter.cfg ) to local working folders
         if (trialJobDetail.form !== undefined) {
@@ -284,7 +295,7 @@ class PAIK8STrainingService extends PAITrainingService {
         //Generate Job Configuration in yaml format
         const paiJobConfig = this.generateJobConfigInYamlFormat(trialJobDetail);
         this.log.debug(paiJobConfig);
-        // Step 3. Submit PAI job via Rest call
+        // Step 2. Submit PAI job via Rest call
         // Refer https://github.com/Microsoft/pai/blob/master/docs/rest-server/API.md for more detail about PAI Rest API
         const submitJobRequest: request.Options = {
             uri: `${this.protocol}://${this.paiClusterConfig.host}/rest-server/api/v2/jobs`,

src/nni_manager/training_service/remote_machine/remoteMachineData.ts

@@ -179,13 +179,14 @@ export enum ScheduleResultType {
 export const REMOTEMACHINE_TRIAL_COMMAND_FORMAT: string =
     `#!/bin/bash
 export NNI_PLATFORM=remote NNI_SYS_DIR={0} NNI_OUTPUT_DIR={1} NNI_TRIAL_JOB_ID={2} NNI_EXP_ID={3} \
-NNI_TRIAL_SEQ_ID={4} export MULTI_PHASE={5}
+NNI_TRIAL_SEQ_ID={4} MULTI_PHASE={5} NNI_CODE_DIR={6} 
+cp -r $NNI_CODE_DIR/. $NNI_SYS_DIR
 cd $NNI_SYS_DIR
 sh install_nni.sh
-echo $$ >{6}
-python3 -m nni_trial_tool.trial_keeper --trial_command '{7}' --nnimanager_ip '{8}' --nnimanager_port '{9}' \
---nni_manager_version '{10}' --log_collection '{11}' 1>$NNI_OUTPUT_DIR/trialkeeper_stdout 2>$NNI_OUTPUT_DIR/trialkeeper_stderr
-echo $? \`date +%s%3N\` >{12}`;
+echo $$ >{7}
+python3 -m nni_trial_tool.trial_keeper --trial_command '{8}' --nnimanager_ip '{9}' --nnimanager_port '{10}' \
+--nni_manager_version '{11}' --log_collection '{12}' 1>$NNI_OUTPUT_DIR/trialkeeper_stdout 2>$NNI_OUTPUT_DIR/trialkeeper_stderr
+echo $? \`date +%s%3N\` >{13}`;
 
 export const HOST_JOB_SHELL_FORMAT: string =
     `#!/bin/bash

src/nni_manager/training_service/remote_machine/remoteMachineTrainingService.ts

@@ -26,7 +26,7 @@ import { CONTAINER_INSTALL_NNI_SHELL_FORMAT } from '../common/containerJobData';
 import { GPUSummary } from '../common/gpuData';
 import { TrialConfig } from '../common/trialConfig';
 import { TrialConfigMetadataKey } from '../common/trialConfigMetadataKey';
-import { execCopydir, execMkdir, validateCodeDir, getGpuMetricsCollectorBashScriptContent } from '../common/util';
+import { execMkdir, validateCodeDir, getGpuMetricsCollectorBashScriptContent } from '../common/util';
 import { GPUScheduler } from './gpuScheduler';
 import {
     REMOTEMACHINE_TRIAL_COMMAND_FORMAT, RemoteMachineMeta,
@@ -42,11 +42,13 @@ import { ShellExecutor } from 'training_service/remote_machine/shellExecutor';
 @component.Singleton
 class RemoteMachineTrainingService implements TrainingService {
     private readonly machineExecutorManagerMap: Map<RemoteMachineMeta, ExecutorManager>; //machine excutor map
+    private readonly machineCopyExpCodeDirPromiseMap: Map<RemoteMachineMeta, Promise<void>>;
     private readonly trialExecutorMap: Map<string, ShellExecutor>; //trial excutor map
     private readonly trialJobsMap: Map<string, RemoteMachineTrialJobDetail>;
     private readonly MAX_TRIAL_NUMBER_PER_EXECUTOR: number = 5; // every excutor has a max trial concurrency number
     private readonly expRootDir: string;
     private readonly remoteExpRootDir: string;
+    private readonly remoteExpCodeDir: string;
     private trialConfig: TrialConfig | undefined;
     private gpuScheduler?: GPUScheduler;
     private readonly jobQueue: string[];
@@ -68,9 +70,11 @@ class RemoteMachineTrainingService implements TrainingService {
         this.trialJobsMap = new Map<string, RemoteMachineTrialJobDetail>();
         this.trialExecutorMap = new Map<string, ShellExecutor>();
         this.machineExecutorManagerMap = new Map<RemoteMachineMeta, ExecutorManager>();
+        this.machineCopyExpCodeDirPromiseMap = new Map<RemoteMachineMeta, Promise<void>>();
         this.jobQueue = [];
         this.expRootDir = getExperimentRootDir();
         this.remoteExpRootDir = this.getRemoteExperimentRootDir();
+        this.remoteExpCodeDir = unixPathJoin(this.remoteExpRootDir, 'nni-code');
         this.timer = timer;
         this.log = getLogger();
         this.trialSequenceId = -1;
@@ -320,9 +324,20 @@ class RemoteMachineTrainingService implements TrainingService {
                     throw new Error(`codeDir ${remoteMachineTrailConfig.codeDir} is not a directory`);
                 }
 
-                // Validate to make sure codeDir doesn't have too many files
                 try {
+                    // Validate to make sure codeDir doesn't have too many files
                     await validateCodeDir(remoteMachineTrailConfig.codeDir);
+                    // Copy codeDir to remote machine
+                    for (const [rmMeta, executorManager] of this.machineExecutorManagerMap.entries()) {
+                        const executor: ShellExecutor = await executorManager.getAvailableExecutor();
+                        if (executor !== undefined) {
+                            this.machineCopyExpCodeDirPromiseMap.set(
+                                rmMeta,
+                                executor.copyDirectoryToRemote(remoteMachineTrailConfig.codeDir, this.remoteExpCodeDir, this.remoteOS)
+                            ); 
+                        }
+                    }
+                    
                 } catch (error) {
                     this.log.error(error);
 
@@ -480,6 +495,10 @@ class RemoteMachineTrainingService implements TrainingService {
             const trialWorkingFolder: string = unixPathJoin(this.remoteExpRootDir, 'trials', trialJobId);
 
             trialJobDetail.rmMeta = rmScheduleInfo.rmMeta;
+            const copyExpCodeDirPromise = this.machineCopyExpCodeDirPromiseMap.get(trialJobDetail.rmMeta);
+            if (copyExpCodeDirPromise !== undefined) {
+                await copyExpCodeDirPromise;
+            }
 
             await this.allocateExecutorForTrial(trialJobDetail);
             await this.launchTrialOnScheduledMachine(
@@ -554,6 +573,7 @@ class RemoteMachineTrainingService implements TrainingService {
             getExperimentId(),
             trialJobDetail.form.sequenceId.toString(),
             this.isMultiPhase,
+            this.remoteExpCodeDir,
             unixPathJoin(trialWorkingFolder, '.nni', 'jobpid'),
             command,
             nniManagerIp,
@@ -565,12 +585,8 @@ class RemoteMachineTrainingService implements TrainingService {
 
         //create tmp trial working folder locally.
         await execMkdir(path.join(trialLocalTempFolder, '.nni'));
-
-        //create tmp trial working folder locally.
-        await execCopydir(this.trialConfig.codeDir, trialLocalTempFolder);
-        const installScriptContent: string = CONTAINER_INSTALL_NNI_SHELL_FORMAT;
-        // Write NNI installation file to local tmp files
-        await fs.promises.writeFile(path.join(trialLocalTempFolder, 'install_nni.sh'), installScriptContent, { encoding: 'utf8' });
+        // Write install_nni.sh
+        await fs.promises.writeFile(path.join(trialLocalTempFolder, 'install_nni.sh'), CONTAINER_INSTALL_NNI_SHELL_FORMAT, { encoding: 'utf8' });
         // Write file content ( run.sh and parameter.cfg ) to local tmp files
         await fs.promises.writeFile(path.join(trialLocalTempFolder, 'run.sh'), runScriptTrialContent, { encoding: 'utf8' });
         await this.writeParameterFile(trialJobId, form.hyperParameters);

src/nni_manager/training_service/remote_machine/shellExecutor.ts

@@ -183,13 +183,14 @@ class ShellExecutor {
      * Copy files and directories in local directory recursively to remote directory
      * @param localDirectory local diretory
      * @param remoteDirectory remote directory
-     * @param sshClient SSH client
+     * @param remoteOS the OS of remote machine
      */
     public async copyDirectoryToRemote(localDirectory: string, remoteDirectory: string, remoteOS: string): Promise<void> {
         const tmpSuffix: string = uniqueString(5);
         const localTarPath: string = path.join(os.tmpdir(), `nni_tmp_local_${tmpSuffix}.tar.gz`);
         const remoteTarPath: string = unixPathJoin(getRemoteTmpDir(remoteOS), `nni_tmp_remote_${tmpSuffix}.tar.gz`);
-
+        // Create remote directory
+        await this.createFolder(remoteDirectory);
         // Compress files in local directory to experiment root directory
         await tarAdd(localTarPath, localDirectory);
         // Copy the compressed file to remoteDirectory and delete it

test/nni_test/nnitest/run_tests.py

@@ -168,6 +168,7 @@ def launch_test(config_file, training_service, test_case_config):
     trial_stats = get_trial_stats(TRIAL_JOBS_URL)
     print(json.dumps(trial_stats, indent=4), flush=True)
     if status != 'DONE' or trial_stats['SUCCEEDED'] + trial_stats['EARLY_STOPPED'] < max_trial_num:
+        print_experiment_log(experiment_id=experiment_id)
         print_trial_job_log(training_service, TRIAL_JOBS_URL)
         raise AssertionError('Failed to finish in maxExecDuration')