> > 1. Do you need dedicated RAM, and in that case, which size and bandwidth? > > > > Actually, I'd prefer to have unified RAM and moreover, I'd prefer to have > virtual addressing for the GPU.
<kernel developer hat> If you have userspace applications pass the GPU virtual addresses through something like what Infiniband uses, you save us ALL a lot of debugging headache, and make it fast </kernel dev> >From a hardware point of view, we should have a single TLB/cache/VM subsystem, and save duplicating the same functionality in two places. > > > > 2. How many gates is the current design? [snip] > > 3. Is it in a state that could be targeting an ASIC right now, or do > > you need more functionality and verification? > > What about OGD-1? Does svn://svn.opengraphics.org/ogp have working HDL? I'm also curious about project VGA: http://wacco.mveas.com/ There are a lot of embedded applications where a basic framebuffer with HDMI/Displayport/LCD driver output would be rather quite fantastic. > > > 4. We are not sure yet if we will be targeting an ASIC with gigabit > > transceivers. Would that be a requirement? > > > > I think that even if you decide that we're not what you're after, I think > your project would be an excellent design target. How would you feel about > a design that was appropriate for embedded devices? Look at the PowerVR > designs used in mobile devices; only like 4 shader engines. > > The only gigabit transceivers I can think of would be for if you were to > incorporate DVI encoding directly into your ASIC. I'm the one running around ranting about Gigabit transcievers, but for network, either Ethernet, or https://bitbucket.org/dahozer/infiniband-fpga There are plenty of PHY chips that do gig-E and DVI, so that might be a quicker short-term, but long-term I'd really like to do the mixed-signal analog design and serdes design for Ghz transcievers as a full open-source project if I can find the tools. I think we need to start with *something* that's raspberry-pi like, and work on delivering new silicon revs once a month, and by the time Tim gets done with OGD2 HDL simulation, we're going to end up with a pretty smoking fast platform. Has anyone here ever used http://www.mosis.com/ ? Any idea what a run of say 100 or 1000 devices costs? I don't think it really matters how many we make, or if they even work the first time, so long as we can keep the cost down, and keep the pipeline full with 1 new rev a month. If nothing else, it's probably worth paying what it'd cost me for tuition at one of the world's best private engineering schools, and potentially a hell of a lot more lucrative if say rev number 5 actually works and we ship a million units. _______________________________________________ Open-graphics mailing list [email protected] http://lists.duskglow.com/mailman/listinfo/open-graphics List service provided by Duskglow Consulting, LLC (www.duskglow.com)
