backward compatibility for mac: job end timestamp

src/nni_manager/training_service/local/localTrainingService.ts

@@ -362,7 +362,7 @@ class LocalTrainingService implements TrainingService {
         }
         runScriptLines.push(
             `eval ${this.localTrailConfig.command} 2>${path.join(trialJobDetail.workingDirectory, 'stderr')}`,
-            `echo $? \`date +%s%3N\` >${path.join(trialJobDetail.workingDirectory, '.nni', 'state')}`);
+            `echo $? \`date +%s000\` >${path.join(trialJobDetail.workingDirectory, '.nni', 'state')}`);
 
         await cpp.exec(`mkdir -p ${trialJobDetail.workingDirectory}`);
         await cpp.exec(`mkdir -p ${path.join(trialJobDetail.workingDirectory, '.nni')}`);