Ccminer is very unstable with 19 gpu's ..
I just wander why would anyone create system like that and get a constant problems. Comparing to total system cost, an extra motherboard+cpu+memory would not be that big investment, but release complexity by times.
Well ...
Following the strict rules that are required to run such a machine, there really isn't much issues, let alone problems.
Once a design is set, it is very easy to duplicate. That is the reason you would go that route. Density plays a massive part if you are doing this on a larger scale.
That is why, at least for CWI.
#crysx
Maybe the price of adding the extra mb/cpu/ram/ssd needs to be spelled out, thats like an extra $400-500. Fit as many GPU's as you can for the farms.
Perhaps in terms of initial costs but maybe not in terms of availabilty management (maintenance costs).
If you split your single 19 gpu rig into multiple smaller rigs (let's say 3 rigs), you will probably remove many annoying factors. For example, you will probably remove PSU coupling, ease thermal dissipation, etc.
You will probably have less stress with complete downtime; 2 rigs still working while one is on fault/repair.
As stated by crysx, the only valuable reason to build huge rigs is "limited" space