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You are right. It appears to be the same thing. The only subtle difference is that the later versions of Alteryx it’s the memory limit setting on the third screenshot.
You have configured 4 to run at once and set the memory limit at 8GB a workflow. Thus would need 32GB available on the server to suffice those requirements. To add that’s 32GB available after running things like Windows, Alteryx Gallery, anti-virus etc etc
It also gets a little more complex as I can see you have both engines enabled.
We don’t recommend having more than 1 simultaneous workflow set if you are running the AMP engine as a single flow can consume all the resource on the machine/server.
It’s more the CPU usage with AMP that means it can only be one at any given time.
As there is the potential for one AMP workflow to pin all CPU cores to 100%. Thus not recommending allowing multiple at once to create an issue.
It will abide by that memory limit though.
I would always recommend running Alteryx Server on a 32GB machine as well. As it should really help with performance. As typically Windows and other utilities and applications will use a good 8GB just while the machine effectively idles.
So you only have 8GB left for workflows to begin with. If you increase to 32GB in total on the machine you have effectively tripled the RAM available for workflows due to the above.
We will see if we can upgrade the RAM to 32GB as per your recommendations.
In the interim, we have tweaked the setting for Memory Limit to 3072 MB (3GB) per workflow with 4 as number of processing threads, which would result in 12GB RAM consumption out of 16GB RAM total memory on the server, leaving the server with 4GB RAM to deal with other non-Alteryx related operations.