On Mon, 6 Jul 2020 at 21:22, Chris Albertson <[email protected]> wrote: > > Is there any advantage to using a bus connected Mesa card like the 6i25 vs > using one of the Ethernet-connected cards such as 7i92M or 7i93
PCI might be more reliable. Not so much during runs, but at startup. It is quite easy to imagine something changing the network setup of your machine, and finding that you just can't get it to run. Ethernet might have better noise resistance. I think it is recommended for Plasma due to the integral isolation. Ethernet can make for easier packaging, with a PC in one place and controller in the other. PCI is a bit "tighter", there is less inherent delay in the data path. Also, PCI works with both preempt-rt and RTAI. Ethernet only works with preempt-rt (at the moment) and not all hardware has adequate latency with that. But if you are using an ethernet Mesa card "adequate" latency is a pretty low bar. Anything <200,000 is OK, and higher might be tolerable. -- atp "A motorcycle is a bicycle with a pandemonium attachment and is designed for the especial use of mechanical geniuses, daredevils and lunatics." — George Fitch, Atlanta Constitution Newspaper, 1912 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
