diff --git a/ajax.php b/ajax.php
index 5618e00..381b527 100644
--- a/ajax.php
+++ b/ajax.php
@@ -112,6 +112,18 @@ switch ($action) {
 		$res = job_predict_req($job, $role);
 		break;
 
+	case 'job_predict_time':
+		$job = new CRObject();
+		$job->set('name', cr_get_POST('name', 'jobName'));
+		$job->set('virtual_cluster', cr_get_POST('cluster'));
+		$job->set('workspace', cr_get_POST('workspace'));
+		$job->set('priority', cr_get_POST('priority'));
+		$job->set('run_before', cr_get_POST('run_before'));
+		$job->set('locality', cr_get_POST('locality'));
+		$job->set('tasks', cr_get_POST('tasks'));
+		$res = job_predict_time($job, $role);
+		break;
+
 	case 'summary_get':
 		$res = summary_get();
 		break;
diff --git a/job.logic.php b/job.logic.php
index bc47098..41966a8 100644
--- a/job.logic.php
+++ b/job.logic.php
@@ -197,6 +197,54 @@ function job_predict_req(CRObject $job, $role)
 	return $res;
 }
 
+function job_predict_time(CRObject $job, $role)
+{
+	if (!AccessController::hasAccess(Session::get('role', 'visitor'), 'job.list')) {
+		$res['errno'] = Code::NO_PRIVILEGE;
+		return $res;
+	}
+
+	$spider = new Spider();
+	$tasks = json_decode($job->get('tasks'), true);
+	foreach ($tasks as $i => $task) {
+		$task['cpu_number'] = intval($task['cpu_number']);
+		$task['memory'] = intval($task['memory']);
+		$task['gpu_number'] = intval($task['gpu_number']);
+		$task['gpu_memory'] = intval($task['gpu_memory']);
+		$task['is_ps'] = $task['is_ps'] == 1;
+		$tasks[$i] = $task;
+	}
+	$job->set('tasks', $tasks);
+	$job->set('workspace', $job->get('workspace'));
+	$job->set('group', $job->get('virtual_cluster'));
+	$job->set('priority', $job->getInt('priority'));
+	$job->set('locality', $job->getInt('locality'));
+	$job->set('run_before', $job->getInt('run_before'));
+	$job->set('created_by', $job->getInt('created_by'));
+	$data['job'] = json_encode($job);
+
+	$spider->doPost(YAO_SCHEDULER_ADDR . '?action=job_predict_time', $data);
+	$msg = json_decode($spider->getBody(), true);
+
+	if ($msg === NULL) {
+		$res['errno'] = Code::UNKNOWN_ERROR;
+		$res['msg'] = 'response is null';
+		return $res;
+	}
+
+	if ($msg['code'] !== 0) {
+		$res['errno'] = $msg['code'];
+		$res['msg'] = $msg['error'];
+		return $res;
+	}
+
+	$res['total'] = $msg['total'];
+	$res['pre'] = $msg['pre'];
+	$res['post'] = $msg['post'];
+	$res['errno'] = Code::SUCCESS;
+	return $res;
+}
+
 function summary_get()
 {
 	if (!AccessController::hasAccess(Session::get('role', 'visitor'), 'system.summary')) {
diff --git a/modals.php b/modals.php
index c638dd2..7ffd4aa 100755
--- a/modals.php
+++ b/modals.php
@@ -211,7 +211,8 @@
 					<div>
 						<button id="form-job-submit" type="submit" class="btn btn-primary btn-lg">Submit</button>
 						<button id="form-job-task-add" type="button" class="btn btn-default btn-lg">Add Task</button>
-						<button id="form-job-predict-req" type="button" class="btn btn-default btn-lg">Predict</button>
+						<button id="form-job-predict-req" type="button" class="btn btn-default">Predict</button>
+						<button id="form-job-predict-time" type="button" class="btn btn-default">PredictTime</button>
 					</div>
 				</form>
 			</div>
diff --git a/static/job.js b/static/job.js
index be4a24c..20bd2a3 100755
--- a/static/job.js
+++ b/static/job.js
@@ -107,6 +107,68 @@ function register_events_job() {
 		});
 	});
 
+	$("#form-job-predict-time").click(function (e) {
+		var name = $('#form-job-name').val();
+		var workspace = $('#form-job-workspace').val();
+		var cluster = $('#form-job-cluster').val();
+		var priority = $('#form-job-priority').val();
+		var run_before = $('#form-job-run-before').val();
+		var locality = $('#form-job-locality').val();
+		if (run_before.length !== 0) {
+			run_before = moment(run_before).unix();
+		}
+		var tasks = [];
+		$('#form-job-tasks').find('.row').each(function () {
+			var task = {};
+			task['name'] = $(this).find('.task-name').eq(0).val();
+			task['image'] = $(this).find('.task-image').eq(0).val();
+			task['cmd'] = $(this).find('.task-cmd').eq(0).val();
+			task['cpu_number'] = $(this).find('.task-cpu').eq(0).val();
+			task['memory'] = $(this).find('.task-mem').eq(0).val();
+			task['gpu_number'] = $(this).find('.task-gpu-num').eq(0).val();
+			task['gpu_memory'] = $(this).find('.task-gpu-mem').eq(0).val();
+			task['is_ps'] = $(this).find('.task-is-ps').eq(0).val();
+			task['gpu_model'] = $(this).find('.task-gpu-model').eq(0).val();
+			tasks.push(task);
+		});
+
+		/* TODO validate form */
+		if (name.length === 0) {
+			return true;
+		}
+		$.each(tasks, function (i, task) {
+			if (task['name'].length === 0) {
+				return true;
+			}
+		});
+
+		var ajax = $.ajax({
+			url: "service?action=job_predict_time",
+			type: 'POST',
+			data: {
+				name: name,
+				workspace: workspace,
+				cluster: cluster,
+				priority: priority,
+				run_before: run_before,
+				locality: locality,
+				tasks: JSON.stringify(tasks)
+			}
+		});
+		ajax.done(function (res) {
+			if (res["errno"] !== 0) {
+				$("#modal-msg-content").html(res["msg"]);
+				$("#modal-msg").modal('show');
+			} else {
+				console.log(res);
+			}
+		});
+		ajax.fail(function (jqXHR, textStatus) {
+			$("#modal-msg-content").html("Request failed : " + jqXHR.statusText);
+			$("#modal-msg").modal('show');
+		});
+	});
+
 	$('#form-job-task-add').click(function (e) {
 		var tasks = $('#form-job-tasks');
 		var newTask = $('#form-job-tasks').find('.row').eq(0).clone();