On 24 July 2016 at 16:11, Sébastien Bourdeauducq <s...@m-labs.hk> wrote:
> On Sunday, July 24, 2016 10:04 PM, Grzegorz Kasprowicz wrote: > >> This can be also done using single FLASH and multi boot. Xilinx has >> such option but never tested it. >> > > I have used some of the multiboot features on Spartan-6, and it worked > fine. Never tried on other FPGAs. > > Well, we already have Ethernet switch in the crate, delvered to all >> interesting places. >> > > But we do not have it on any of our boards. And if we don't depend on > Ethernet, it means we can remove it completely from the crate and/or > backplane, should we decide to design our own. And Ethernet does not work > in multi-crate systems, and Kasli, unless a) a separate cable is connected > and b) Ethernet cruft is added to Kasli. > Yes, Kasli case is an argument against Ethernet. > > Since diagnostic data are not timing critical, you could devote main >> fibre channel to real time traffic. >> > > Diagnostic data is also low-bandwidth, and dedicating some fixed small > amount of the fiber traffic to such functions is also a solution. > Yes, but it adds some complexity in all places where such traffic need to be separated. It will probably consume less resources than Ethernet implementation anyway. Greg > > Sébastien >
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