Thanks Adam. Good to know it wasn't just me! As an update: I installed Vivado 2020.1 this afternoon. Running with matlab 2019a it does seem they fixed the issue, and it compiles without error.
Caveat: I've only tested with simple counters. I haven't yet looked to see what in the toolflow might need updating before it is fully compatible with vivado 2020. Cheers, Jonathon On Fri, 28 Aug 2020 at 03:55, Adam Isaacson <[email protected]> wrote: > Hi Jonathon, > > We have the same issue for our 1K channeliser using the Alveo U280 boards > - see screen capture. To fix this we changed the Simulink counters not to > use DSP - not very practical, but at least we got the compile through. I > have looked at the DSP architecture for the Virtex UltraScale+ with HBM and > it definitely has the DSP architecture. We used Matlab R2018a and Vivado > 2019.1.1 and Vivado 2019.2 - they all had this issue. I believe it to be a > Simulink/sysgen bug. I never got around to logging a support request with > Xilinx yet, as we were focusing on the Alveo U280 100GbE testing. We > haven't looked into this much more yet. > > This is from Andrew van der Byl: "The - a snag.....There seems to be an > issue when counters are set to use DSP logic. Jasper_frontend fails (see > attached pic) if a counter is set to use DSP (it's fine when Fabric or > behavioural is selected). You can regenerate the issue by changing any of > the counters in the base design to use DSP. The DSP slices used in the > PFB are fine though. I did have to change all counters in the design that > by default are set to use DSP slices or the build would fail. Thought I'd > give you the heads up. I'll start to work in the rest of the logic and > build in some test logic as well". > > Kind regards, > > Adam Isaacson > South African Radio Astronomy Observatory (SARAO) > Hardware Manager > Cell: (+27) 825639602 > Tel: (+27) 215067300 > email: [email protected] > > > > On Fri, Aug 28, 2020 at 2:31 AM Jonathon Kocz <[email protected]> wrote: > >> Hi CASPER, >> >> I was wondering if anyone had encountered difficulties in compiling >> larger CASPER FFTs for Ultrascale+ HBM devices? >> >> I have found I can compile the CASPER FFTs fine for Ultrascale+ devices, >> but HBM devices seem to object ("Cannot target DSP48 on this device, >> virtexuplusHBM"). >> >> As far as I know DSP48E2 should be backward compatible with DSP48E1 (and >> certainly as other Ultrascale+ devices will compile, this seems to be true). >> >> The only thing I've been able to find specifically relating to HBM >> devices is that the number you can cascade may be different due to the >> difference in SLRs with the HBM interface (UG579). >> >> Is this just Simulink needing an update (I've tried Vivado 2019.1.1 and >> 2019.2, both with Matlab 2019a), do we finally need to explicitly change >> the DSP48's in the toolflow to be E2 for devices like this, or is there >> something more fundamental I'm missing? >> >> Thanks, >> Jonathon >> >> -- >> You received this message because you are subscribed to the Google Groups >> "[email protected]" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To view this discussion on the web visit >> https://groups.google.com/a/lists.berkeley.edu/d/msgid/casper/CAPU71P8xjbD%2BwSSWPRK-qYVOVt-umBxmLQiYWmAAncyrgobF1A%40mail.gmail.com >> <https://groups.google.com/a/lists.berkeley.edu/d/msgid/casper/CAPU71P8xjbD%2BwSSWPRK-qYVOVt-umBxmLQiYWmAAncyrgobF1A%40mail.gmail.com?utm_medium=email&utm_source=footer> >> . >> > -- > You received this message because you are subscribed to the Google Groups " > [email protected]" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/a/lists.berkeley.edu/d/msgid/casper/CADTJ%3DnGLVoRD13PsFPHaUay3etcgMev8MfFs6MDijeTDgvrRfw%40mail.gmail.com > <https://groups.google.com/a/lists.berkeley.edu/d/msgid/casper/CADTJ%3DnGLVoRD13PsFPHaUay3etcgMev8MfFs6MDijeTDgvrRfw%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "[email protected]" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/a/lists.berkeley.edu/d/msgid/casper/CAPU71P_hO0PX3wdSj6AC2J3nXwP5zcdmpgfWuafhSA47_h-RGg%40mail.gmail.com.
