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A Pi-Powered Plan 9 Cluster

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Re: A Pi-Powered Plan 9 Cluster

#51

Post by bullen »

kingosticks wrote: post #48
bullen wrote: post #46

Earlier quoted context omitted.

Nope, if you compare theoretical Gflops/watt it's probably 30%, but in practice you'll only get maybe 15%. Memory speed is the bottleneck and you cannot get around that. DDR3 had lower latency than DDR6 and only bandwidth is increasing, and you have to ask bandwidth for what?

Sorry, I don't follow. Why would anything be getting faster if we are talking about hypothetically utilising (just) the power-saving gains from newer nodes?

Basically Gflops/watt is not going north of 1 for 32-bit CPUs, so humanity is completely out of growth. This is the end. Game Over!

Re: A Pi-Powered Plan 9 Cluster

#52

Post by pjmlp »

arghwhat wrote: post #49
pjmlp wrote: post #47

Earlier quoted context omitted.

Exactly, because the infrastructure wasn't never there, as Carmack pointed out back in the day.

"wasn't never there"? Acme and Rio are simple because they should be, not because they couldn't be anything else. Although, you are correct that UIs have degraded extremely in tandem with the increase in available resources, which is very frustrating.

Yeah, using Plan 9 for the graphics rendering stuff Hollywood was using Irix and NeXTSTEP for, wasn't never on the team's roadmap, specially when on Inferno the UI was based on Tk.

Re: A Pi-Powered Plan 9 Cluster

#53

Post by arghwhat »

pjmlp wrote: post #52
arghwhat wrote: post #49

Earlier quoted context omitted.

"wasn't never there"? Acme and Rio are simple because they should be, not because they couldn't be anything else. Although, you are correct that UIs have degraded extremely in tandem with the increase in available resources, which is very frustrating.

Yeah, using Plan 9 for the graphics rendering stuff Hollywood was using Irix and NeXTSTEP for, wasn't never on the team's roadmap, specially when on Inferno the UI was based on Tk.

Cinematic graphics rendering has nothing to do with UIs and the technologies used there.

Plan9 provides no performance issues or technological barriers to doing e.g. ray-tracing or scene previews for graphics work. Even with respect to displaying it in a UI.

Re: A Pi-Powered Plan 9 Cluster

#54

Post by [deleted] »

arghwhat wrote: post #53
pjmlp wrote: post #52

Earlier quoted context omitted.

Yeah, using Plan 9 for the graphics rendering stuff Hollywood was using Irix and NeXTSTEP for, wasn't never on the team's roadmap, specially when on Inferno the UI was based on Tk.

Cinematic graphics rendering has nothing to do with UIs and the technologies used there. Plan9 provides no performance issues or technological barriers to doing e.g. ray-tracing or scene previews for graphics work. Even with respect to displaying it in a UI.

[deleted]

Re: A Pi-Powered Plan 9 Cluster

#55

Post by pjmlp »

arghwhat wrote: post #53
pjmlp wrote: post #52

Earlier quoted context omitted.

Yeah, using Plan 9 for the graphics rendering stuff Hollywood was using Irix and NeXTSTEP for, wasn't never on the team's roadmap, specially when on Inferno the UI was based on Tk.

Cinematic graphics rendering has nothing to do with UIs and the technologies used there. Plan9 provides no performance issues or technological barriers to doing e.g. ray-tracing or scene previews for graphics work. Even with respect to displaying it in a UI.

Of course it does, where do you think IrisGL and Renderman were used for?

An OS architecture that doesn't do DMA for maximum hardware performance just isn't up to the game.

Re: A Pi-Powered Plan 9 Cluster

#56

Post by arghwhat »

pjmlp wrote: post #55
arghwhat wrote: post #53

Earlier quoted context omitted.

Cinematic graphics rendering has nothing to do with UIs and the technologies used there. Plan9 provides no performance issues or technological barriers to doing e.g. ray-tracing or scene previews for graphics work. Even with respect to displaying it in a UI.

Of course it does, where do you think IrisGL and Renderman were used for? An OS architecture that doesn't do DMA for maximum hardware performance just isn't up to the game.

> Of course it does, where do you think IrisGL and Renderman were used for?

Not only are you confusing native UI stack for OS/HW capabilities, you are also seemingly confusing CPU/GPU workloads.

Nothing at all stops Renderman from running on Plan9, other than Renderman not having native Plan9 support.

Renderman does CPU ray-tracing, as ray-tracing still cannot be done in GPU (and no, RTX has no value in production quality rendering). The only GPU feature of Renderman is a post denoising filter, which will otherwise happily fall back to CPU.

> An OS architecture that doesn't do DMA for maximum hardware performance just isn't up to the game.

DMA has no effect on Renderman.

At this point, based on this history of this thread, I'll have to conclude that you have no idea what you're talking about at all.

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