partial can't use the path which in express sets

[Nicolaschinc]

Like that:

/app.js/

var app = express();
var express = require('express');
var ejsMate = require('ejs-mate');
var path = require('path');

app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');
app.engine('ejs',ejsMate);

we set the static path at views

catalogue：

|---views | |---src | | |---list.ejs | | |---main.ejs | |---layout | | |---layout.ejs /main.ejs*/

<% layout('/layout/layout') %>
<%- partial('/src/list',{name:"abc"}) %>

layout true but partial is wrong which consoles that could not find the path

why?