Folding Forum

No errors after multiple Facore 21 projects, issue looks resolved. Thanks guys for the help figuring this out.

bruce wrote:It's probably something as simple as the order of entries in the PATH environment variable -- and likely influenced by the order of the driver installations.

The AMD/NVIDIA drivers were the most recently installed driver on both systems. As for Intel, one was using a new Intel IGP driver I installed after I removed the 750 Ti, and the other was using whatever driver Microsoft auto-installs before I put the 750 Ti in it. If we go all the way back both rigs were originally built with GPUs and the IGP was only ever temporarily used.

PhysX is not OpenCL, but, Nvidia's latest 378.72 hotfix driver had this tidbit "- Resolved PhysX being forced to CPU when "Optimize for Compute Performance" setting is OFF."

My uneducated impression is that PnysX is an old API that's essentially not used any more. Have you found any reason to install it?

PhysX is only used by games but this "Optimize for Compute Performance" setting also influenced OpenCL which let e.g. Boinc GPUGRID fail
https://www.gpugrid.net/forum_thread.php?id=4500
That is fixed again in 378.72 Hotfix driver

The issue in my case was that I was on a Domain and the firewall did not allow my PC access. I was able to have the system administrator create a policy to allow connection from PC (source) from my subnet to the internet (destination). The IP address of my PC was used as the source and the WAN connection the destination. Note I also had to allow FAHClient access to the Domain and Public through Windows Firewall.