Remote Off-Screen Rendering with OpenGL

Shehzan ArrayFire, OpenGL 18 Comments

At ArrayFire, we constantly encounter projects that require OpenGL and run on a remote server that does not have a display. In this blog, we have compiled a list of steps that users can use to run full profile OpenGL applications over SSH on remote systems without a display. A few notes before we get started. This blog is limited to computers running distributions of Linux. The first part of the blog that shows the configuration of the xorg.conf file is limited to NVIDIA cards (with display). AMD cards support this capability without the modification of xorg.conf file. However, we have not been able to get a comprehensive list of supported devices. Requirements You will need access to the remote ...

ArrayFire-OpenGL Interop using CUDA

Shehzan ArrayFire, CUDA, OpenGL Leave a Comment

A lot of ArrayFire users have been interested in the usage of ArrayFire in partnership with OpenGL for graphics computation. In the long run, we do plan to expand further on the interoperablilty and make it easier through ArrayFire. For now, we have developed a small example to expand on the usage of the CUDA-OpenGL interop API to assist in the interop operations between ArrayFire and OpenGL. Some of the advantage of direct ArrayFire-OpenGL interop are: Faster data transfers: Since the OpenGL buffers as well as ArrayFire data reside on the GPU, we can use a direct device to device copy rather than using the CPU as an intermediate and the relatively slow PCIe interface. Offscreen rendering: It is commonly ...