linux gpu problem

When using GPU in Linxu by ssh to remote server(which supports GPU), I got an error like

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TclError: no display name and no $DISPLAY environment variable

Solution:
run ssh command as

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ssh -X username@server_ip

Quited from "man ssh"

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-X      Enables X11 forwarding.  This can also be specified on a per-host basis in a configuration file