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by bullen
Fri Feb 14, 2020 7:17 pm
Forum: General discussion
Topic: hardware counters raspberry 4
Replies: 12
Views: 856

Re: hardware counters raspberry 4

Any1 from the foundation? Would be nice to know why this is so hard?
by bullen
Sun Feb 02, 2020 7:35 pm
Forum: General discussion
Topic: hardware counters raspberry 4
Replies: 12
Views: 856

Re: hardware counters raspberry 4

I want to use perf.

To get cache misses.
by bullen
Sun Feb 02, 2020 6:22 pm
Forum: General discussion
Topic: hardware counters raspberry 4
Replies: 12
Views: 856

Re: hardware counters raspberry 4

Still no action on being able to develop with C/C++ on raspbian?
by bullen
Fri Jan 31, 2020 8:40 pm
Forum: General discussion
Topic: RAM speed
Replies: 22
Views: 1174

Re: RAM speed

In general I think the automatic memory leveling needs to become programmatic, so that when you program you say what kind of memory you want: L1int fast = 123; L2int slower = 456; LXint superslow... etc. I specific I think the next iteration on pi's need to look at "very fast and very expensive Stat...
by bullen
Fri Jan 31, 2020 6:03 pm
Forum: General discussion
Topic: RAM speed
Replies: 22
Views: 1174

Re: RAM speed

I'm going to link to the twitter chain that triggered my curiosity: https://twitter.com/rygorous/status/1222986490914803712 Let's see if my topic gets removed again. TLDR: The Wii was 4x slower than the Xbox and PS but the games ran ok because it uses 24MB SRAM that has very low latency! So I'm look...
by bullen
Fri Jan 31, 2020 4:02 pm
Forum: General discussion
Topic: RAM speed
Replies: 22
Views: 1174

RAM speed

Why are you deleting my topics?

What RAM speed does the pi's have?
by bullen
Thu Jan 09, 2020 3:19 pm
Forum: General discussion
Topic: Raspberry Compute Module & Jetson Nano SO-DIMM pins
Replies: 8
Views: 343

Re: Raspberry Compute Module & Jetson Nano SO-DIMM pins

Thanks for replying James, if you manage to mention this to a colleague that is working on the compute module 4 I would be eternally grateful! ;)
by bullen
Thu Jan 09, 2020 9:35 am
Forum: General discussion
Topic: Raspberry Compute Module & Jetson Nano SO-DIMM pins
Replies: 8
Views: 343

Re: Raspberry Compute Module & Jetson Nano SO-DIMM pins

crossbar wrote:
Thu Jan 09, 2020 9:24 am
No. The CM, CM3, CM3+, ... are something like breakout boards. To a large degree the SO-DIMM pins reflect the BCM xxxx pins (mostly a 1:1 relation)
Ah, ok... that's sad... but can't we get them to agree on the subset of power/HDMI/input pins?
by bullen
Thu Jan 09, 2020 9:09 am
Forum: General discussion
Topic: Raspberry Compute Module & Jetson Nano SO-DIMM pins
Replies: 8
Views: 343

Raspberry Compute Module & Jetson Nano SO-DIMM pins

Can we get the foundation to cooperate with Nvidia so they are interchangeable?!
by bullen
Tue Jan 07, 2020 7:00 pm
Forum: OpenGLES
Topic: Skin Mesh Animation
Replies: 30
Views: 1539

Re: Skin Mesh Animation

Aha, interesting mesa could have some switch to automatically offload stuff to the CPU... maybe in a separate thread even! But again complexity hurts you even if it is abstracted. Here is a talk that shows what happens when you try to multithread graphics: https://www.gdcvault.com/play/1022186/Paral...
by bullen
Tue Jan 07, 2020 2:05 pm
Forum: OpenGLES
Topic: Skin Mesh Animation
Replies: 30
Views: 1539

Re: Skin Mesh Animation

I'm aware of moving GPU stuff to the CPU for devices that are bottlenecked by the GPU. But: 1) Complexity, not good and specifically when GPUs will automatically become better relative to CPUs over the next 10 years. See Jetson Nano. 2) You would need multithreaded GPU access or your frames will get...
by bullen
Mon Jan 06, 2020 10:21 am
Forum: OpenGLES
Topic: Skin Mesh Animation
Replies: 30
Views: 1539

Re: Skin Mesh Animation

Ok, yes I'm a bit harsh... but really if you take pride in your work it would not be hard to extrapolate that the best feature of OpenGL 3 released in 2008 (VAO) would have to be ported to OpenGL ES at some point. So the broadcom engineers had 4 years to prevent the VC4 being stuck in the past by pr...
by bullen
Mon Jan 06, 2020 8:33 am
Forum: OpenGLES
Topic: Skin Mesh Animation
Replies: 30
Views: 1539

Re: Skin Mesh Animation

That is not unjustified, its not "an insulting and critical attack", I mailed the same thing to Anholt. But I just googled release dates and OpenGL ES 3.0 was released the same year as the Pi 1 so it makes sense... but still read the whole thread. What one could say about all of this is the VC4 was ...
by bullen
Mon Jan 06, 2020 8:11 am
Forum: OpenGLES
Topic: Skin Mesh Animation
Replies: 30
Views: 1539

Re: Skin Mesh Animation

I'm not "slagging" if off because it's not "fast enough for modern games". Maybe you should read the whole thread before commenting? I said it's broken because it can't handle shader based skin mesh animation, that is a fact! Quake uses new vertex data for every animation frame, that's easy and not ...
by bullen
Mon Jan 06, 2020 5:53 am
Forum: Advanced users
Topic: How can I overclock Raspberry PI 4 GPU/core/video core to more then 600MHz?
Replies: 10
Views: 4527

Re: How can I overclock Raspberry PI 4 GPU/core/video core to more then 600MHz?

I can't get any of this to work, my GPU is at 500MHz no matter what I try.

Can someone post a from fresh install 100% working tutorial?
by bullen
Mon Jan 06, 2020 4:49 am
Forum: OpenGLES
Topic: Skin Mesh Animation
Replies: 30
Views: 1539

Re: Skin Mesh Animation

This is sinking in now. The pi 4 is the first cheap ES 3 powered "open" ARM device. The compute module is going to be huge, I predict it will be the most used console by the end of this decade! We're going into a productive stagflation era again like the 70s when the home computer and the internet w...
by bullen
Wed Jan 01, 2020 11:01 am
Forum: General discussion
Topic: hardware counters raspberry 4
Replies: 12
Views: 856

Re: hardware counters raspberry 4

Is anyone from the foundation reading this? How can one use perf?
by bullen
Fri Dec 27, 2019 10:45 am
Forum: General discussion
Topic: hardware counters raspberry 4
Replies: 12
Views: 856

Re: hardware counters raspberry 4

Yes, I guess so. uname -r gives 4.19.50-v70+ So the available linux-perf-4.18 does not cut it? All I know is I get <not supported> on all hardware counters! I'm thoroughly impressed by how hard it is to get hardware profiling to work on modern hardware... I tried Intel tools (certificate problems an...
by bullen
Fri Dec 27, 2019 8:30 am
Forum: General discussion
Topic: hardware counters raspberry 4
Replies: 12
Views: 856

hardware counters raspberry 4

do I need to recompile the kernel to use perf?

why is there not a perf/linux-tools version corresponding to the kernel installed?
by bullen
Thu Dec 26, 2019 9:57 pm
Forum: OpenGLES
Topic: Skin Mesh Animation
Replies: 30
Views: 1539

Re: Skin Mesh Animation

Daniel thx for the tip, you're santa!
by bullen
Thu Dec 26, 2019 9:32 am
Forum: Advanced users
Topic: Analogue audio redux
Replies: 88
Views: 29987

Re: Analogue audio redux

Kids like to talk to each other on the computer.

Nothing is going to change that.
by bullen
Thu Dec 26, 2019 9:30 am
Forum: OpenGLES
Topic: Skin Mesh Animation
Replies: 30
Views: 1539

Re: Skin Mesh Animation

I meant in the realm of 3D games.

Why don't you mention one example while you're at it?
by bullen
Thu Dec 26, 2019 4:46 am
Forum: Advanced users
Topic: Analogue audio redux
Replies: 88
Views: 29987

Re: Analogue audio redux

Well it doesn't really matter if there is no microphone you still need another plug.

The foundation really dropped the ball on this one. Composite is not more valuable than microphone.
by bullen
Thu Dec 26, 2019 4:30 am
Forum: OpenGLES
Topic: Skin Mesh Animation
Replies: 30
Views: 1539

Re: Skin Mesh Animation

Switching to the Pi 4.

The VC4 is not a proper GPU; it's just a toy, you can't make anything real with it.

The VC6 is closer to modern Android devices; still weak, but powerful enough for a MMO!
by bullen
Wed Dec 25, 2019 10:24 am
Forum: Advanced users
Topic: Analogue audio redux
Replies: 88
Views: 29987

Re: Analogue audio redux

I need it to have ADC so line in/input/mic.

Atleast this one has a screen: https://shop.pimoroni.com/products/pira ... dphone-amp

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