uwsgi nginx django ubuntu 14.04 virtualenv - django

Question

I am trying to run my simple django project on uwsgi and nginx, I use ubuntu 14.04 server.
I have followed the uWSGI doc,since here it works ok,but when it comes to this part it won't work for me ,I do not know why?here is the mysite_nginx.conf:
# mysite_nginx.conf
# the upstream component nginx needs to connect to
upstream django {
#server unix:///home/ubuntu/d18/mysite/mysite.sock; # for a file socket
server 127.0.0.1:8001; # for a web port socket (we'll use this first)
}
# configuration of the server
server {
# the port your site will be served on
listen 8000;
# the domain name it will serve for
server_name 123.123.123.123; # this just my example IP address or FQDN
charset utf-8;
# max upload size
client_max_body_size 75M; # adjust to taste
# Django media
location /media {
alias /path/to/your/mysite/media; # your Django project's media files - amend as required
}
location /static {
alias /path/to/your/mysite/static; # your Django project's static files - amend as required
}
# Finally, send all non-media requests to the Django server.
location / {
uwsgi_pass django;
include /home/ubuntu/d18/mysite/uwsgi_params; # the uwsgi_params file you installed
}
}
I did not do the "python manage.py collectstatic", because I thought I just wanna see the sample mysite run on the nginx and uwsgi, however it just not work. Can someone tell me why?