# AWS EC2 (GPU) Instance setup
**URL:** https://discourse.slicer.org/t/aws-ec2-gpu-instance-setup/40453
**Category:** Development
**Tags:** build, compile
**Created:** [November 30, 2024, 5:31am UTC](https://discourse.slicer.org/t/aws-ec2-gpu-instance-setup/40453 "2024-11-30T05:31:04Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@Muhammad\_Hilal](https://discourse.slicer.org/u/Muhammad_Hilal)
#### Post date: [November 30, 2024, 5:31am UTC](https://discourse.slicer.org/t/aws-ec2-gpu-instance-setup/40453/1 "2024-11-30T05:31:04Z")
I have setup the slicer in AWS EC2 (GPU) Instance G5.8xlarge.
I need guidelines, what should I do after completing the setup if I need UI?
final result
./Slicer
Slicer: cannot connect to X server :0
**ubuntu@ip-172-31-114-1** : **~/Slicer-SuperBuild-Debug/Slicer-build** $ export DISPLAY=:99
**ubuntu@ip-172-31-114-1** : **~/Slicer-SuperBuild-Debug/Slicer-build** $ ./Slicer
qt.network.ssl: QSslSocket: cannot resolve SSL\_get1\_peer\_certificate
qt.network.ssl: QSslSocket: cannot resolve EVP\_PKEY\_get\_base\_id
qt.network.ssl: QSslSocket: cannot resolve SSL\_CTX\_load\_verify\_dir
Switch to module: “Welcome”
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### Author:  [@pieper](https://discourse.slicer.org/u/pieper)
#### Post date: [November 30, 2024, 2:02pm UTC](https://discourse.slicer.org/t/aws-ec2-gpu-instance-setup/40453/2 "2024-11-30T14:02:53Z")
It looks like you have some kind of X server running on display 99. You need to connect to it via somthing like x11vnc/noVNC.
Something like what’s described here:
> **[3D Slicer desktop VM | IDC User Guide](https://learn.canceridc.dev/cookbook/virtual-machines/idc-desktop)**