Re: [ARTIQ] Sinara multi-crate / DRTIO switches

2016-11-08 Thread Sébastien Bourdeauducq
Joe, I think some clarification is badly required about what DRTIO does and does not. DRTIO gives you: 1) time transfer 2) low-latency low-level control of remote RTIO channels 3) an auxiliary low-bandwidth low-priority general-purpose data channel (which can be used for moninj, flashing boar

Re: [ARTIQ] Sinara multi-crate / DRTIO switches

2016-11-08 Thread Joe Britton
> does anyone have serious plans to use more than one Sinara crate? Absolutely. One of my primary motives for supporting DRTIO is coordination of multiple crates. Use case is ARTIQ coordinating entanglement distribution between a pair of qubit systems (each with its own crate) separated by an opti

Re: [ARTIQ] Sinara multi-crate / DRTIO switches

2016-11-05 Thread Sébastien Bourdeauducq
On Saturday, November 05, 2016 09:57 PM, Grzegorz Kasprowicz wrote: We can use multiple 10Gbit links in parallel between Metlinos That's doable, but we'd have to write the gateware for inter-lane synchronization while keeping deterministic latency, which is a bit tricky. _

Re: [ARTIQ] Sinara multi-crate / DRTIO switches

2016-11-05 Thread Grzegorz Kasprowicz
We can use multiple 10Gbit links in parallel between Metlinos but the latency would be the same. ___ ARTIQ mailing list https://ssl.serverraum.org/lists/listinfo/artiq

[ARTIQ] Sinara multi-crate / DRTIO switches

2016-11-05 Thread Sébastien Bourdeauducq
Hi, does anyone have serious plans to use more than one Sinara crate? A crate already contains one Metlino and up to 12 Sayma cards, which means 96 DAC and 96 ADC channels. A Metlino could also be connected to several Kaslis (if the Kasli ends up being made). Multi-crate configurations requi