(We're working on the web site issues.) So the real question is why do you want to run Chimera in a cluster environment? Chimera is not designed to run in a cluster environment, it is designed to run a user's desktop computer using 3D graphics. Chimera does not use CUDA.  That said, there is a headless version for Linux that uses a software implementation of OpenGL to create images that you could use in a cluster, so no graphics card is needed. ChimeraX, our successor to Chimera, can take advantage of CUDA in some circumstances, but it is not required.  ChimeraX also only works headless on Linux, with a software implementation of OpenGL.  The headless operation is included in every Linux version.  So no graphics card is needed there either.  We are investigating ways to take advantage of the graphic card's performance when running headless, but we're not there yet.     HTH,     Greg On 10/21/2020 9:24 AM, Calvin Dodge wrote:

Hello,

I have been trying to find out what the hardware requirements are for Chimera.  For example, how can it be run in a cluster environment with CUDA cards, but no Nvidia graphics cards?

My search for information has been hampered by an apparent failure or reorganization of the main site -https://www.cgl.ucsf.edu/chimera/

Every internal link from that page (like to Downloads) is broken.

Will the broken links be fixed?  Is another page the preferred one for Chimera? Do I need the OSMesa version to run without graphics cards?

Thanks,

Calvin Dodge

*/Calvin Dodge/*/ Systems Analyst/

/Office: 832-271-7148/

/ /Email : cdodge@x-iss.com <mailto:ellorente@x-iss.com>

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<http://www.x-iss.com/>

Smart Management and Analytics for Clusters

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Hi Calvin, Our web sites are back up now. For running Chimera on a server, it depends what you will be doing with Chimera. If you will be running Chimera-command or Python scripts that don't save images, you can use any version with the --nogui flag. If you will be running scripts that do save images, you can only do that with the "headless" Linux version. If users will be trying to run Chimera from the server and remoting their display to their client, that will be very difficult to get to work (assuming the remoting is via the X protocol). It rarely works unless both the client and the server have the same graphics card, and since your server has no graphics card... --Eric Eric Pettersen UCSF Computer Graphics Lab

On Oct 21, 2020, at 9:24 AM, Calvin Dodge <cdodge@x-iss.com> wrote:

Hello,

I have been trying to find out what the hardware requirements are for Chimera. For example, how can it be run in a cluster environment with CUDA cards, but no Nvidia graphics cards?

My search for information has been hampered by an apparent failure or reorganization of the main site -https://www.cgl.ucsf.edu/chimera/ <https://www.cgl.ucsf.edu/chimera/> Every internal link from that page (like to Downloads) is broken.

Will the broken links be fixed? Is another page the preferred one for Chimera? Do I need the OSMesa version to run without graphics cards?

Thanks,

Calvin Dodge

Calvin Dodge Systems Analyst Office: 832-271-7148

Email : cdodge@x-iss.com <mailto:ellorente@x-iss.com> http://www.x-iss.com <https://mail.x-iss.com/owa/redir.aspx?C=32dc65a1e7df4e4289ad76e23a15fcf0&URL=http%3a%2f%2fwww.x-iss.com%2f> <37143B47803B42398F4BF8870B0FECB0[25452176].png> <http://www.x-iss.com/> Smart Management and Analytics for Clusters

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