Messages

1

Applications and Porting / Re: Google's Depot Tools (and eventually Chrome and anything else)

« on: February 17, 2022, 11:23:44 am »

For anyone else looking at this, it's possible by disabling the updates and not using the (missing) precompiled binaries to get Depot Tools builds to work, but since Dawn (and the tools around Dawn such as the Tint shader compiler, etc.) will build with CMake this is an easier route. I wrote up some instructions here:

https://gist.github.com/cwoffenden/0854e5d7732f0bdaf84b6aaeee09b826

2

Applications and Porting / Google's Depot Tools (and eventually Chrome and anything else)

« on: February 16, 2022, 07:36:01 am »

I'm looking at building Dawn (with the idea to try some of the 3D tools from work on Power) and I'm stumbling at even getting Depot Tools to work. Starting with:

    https://wiki.raptorcs.com/wiki/Porting/Chromium_(New)

Building gn is fine, but then bootstrapping gclient fails (failing to resolve prebuilt packages for ppc64le). Since folks are building Chromium, V8, etc., is this just me not able to get started?

3

GPU Compute / Accelerators / Re: AMD GPU at boot

« on: February 02, 2022, 07:47:13 am »

Answering one of my own questions: multi-boot off the same disk is straightforward, I'm running both Void and Ubuntu on different partitions (I just need to get the video bios loaded now).

4

GPU Compute / Accelerators / Re: AMD GPU at boot

« on: February 01, 2022, 01:59:43 pm »

Yes, I installed Ubuntu and tried Firefox. On the first day I only noticed the font issue (easily repro'd by opening the web dev tools, which just show white). Then today, second day, I noticed FF complains on launch about not being able to save the bookmarks.

I wanted to try a few OS variants, and Ubuntu was my go-to since we have it on lots of machines successfully at work (all x64).

I was going to look at Chrome, but perhaps some other Linux too. Ideally I'd like multiple installed (big and little endian, for testing, though more out of habit now since I've not shipped anything on BE for over 10 years), though I wasn't sure whether this would need multiple disks rather than multiple partitions.

5

GPU Compute / Accelerators / Re: AMD GPU at boot

« on: February 01, 2022, 09:44:09 am »

I'll post real findings but I found the 3990X doesn't scale out linearly for our use. For our highly parallelised task (imagine 65'000 blocks of the same size being processed) going from 64 to 128 cores yields a 37% speed increase. I think we get hit by the four memory channels.

Overclocking the Power9 is on my list to look at (I'm assuming the power stages to be the limit here though). OC'ing the 3990X is a complete power hog, and we're able to draw over 800W for the CPU/mobo alone (for the TR Pros we have here with 4x RTX6000 we struggle to keep in the 2kW power limit of the PSU and wall socket).

6

GPU Compute / Accelerators / Re: AMD GPU at boot

« on: February 01, 2022, 08:26:48 am »

I'll be doing some comparison between the 3990X and my dual Power9 running our custom texture compression code. I'll not get around to it for a while though. The code scales quite well with more cores but eventually becomes memory bound. Our 3990X machines here are all overclocked and hand tuned, so I think it'll be a tough one to beat.

7

Talos II / Re: Film on Power9 CPU?

« on: February 01, 2022, 07:49:08 am »

Temps seem normal, hovering around 50C. Running stress-ng for a few mins the hottest parts are the VRMs (60C).

8

GPU Compute / Accelerators / Re: AMD GPU at boot

« on: February 01, 2022, 01:28:00 am »

I currently have the HSFs but I'm working on a water cooling solution for it (which I'll report back on once it's finished). We do custom 3D engines and tooling at work and I was looking into alternatives to our current Threadripper setups for texture processing. It's a highly parallel task that benefits from many threads, currently running best on the 64C/128T 3990X, but I was curious as to what else is out there.

I've not had much time to experiment so far, and it'll be at least a month before I get some quality time with this machine.

9

GPU Compute / Accelerators / Re: AMD GPU at boot

« on: January 31, 2022, 12:10:53 pm »

Thanks, I'll check tomorrow (I'm assuming being a brand new mobo it wouldn't have the v1.0 firmware, but in any case I'll look at this).

Where can I find info like this, or does everyone just know and I'm late to the party? The quick start guide seems to trail off when it should just be getting started, but I did (just now) find the other guides and I'll look through them (in particular adding the GPU firmware).

10

GPU Compute / Accelerators / AMD GPU at boot

« on: January 31, 2022, 10:05:58 am »

Before typing I'm already feeling the burning shame of a n00b question, but anyway, here goes...

I finally built my Talos II (dual 18-core), temporarily installed a Radeon RX 580 (I plan on a Radeon Pro W5700 but it currently has a waterblock fitted) and installed Ubuntu 21.10 (server install followed by desktop packages). It's early days and it's mostly working (Firefox 96 has issues, but one thing at a time). So far so good. I've disabled the built-in VGA via the jumper but it still starts up with this and then hands over to the Radeon card. Is this normal?

See the attached image.

11

Talos II / Re: Film on Power9 CPU?

« on: January 27, 2022, 12:11:15 pm »

These are 18-core chips. I didn't see anything when fitting the chip, only on the photo.

I have spare indium pads, since I'll be going the water-cooling route eventually and expected I wouldn't be able to reuse them.

I've not powered it up yet, should do either tomorrow or next week. I guess I'll see with the temps!

12

Talos II / Film on Power9 CPU?

« on: January 27, 2022, 06:28:39 am »

I took some photos whilst building up my system and it's only on looking at the photos I noticed what appears to be a film on the CPUs?

I could take the heatsink back off and take a look a guess but wasn't sure the indium pad would still be good after doing so (or can I remove/refit the cooler as often as I like?).

Is it a trick of the light, my imagination, or is there a film that needs removing?

13

GPU Compute / Accelerators / Re: AMD OpenCL / ROCm

« on: January 19, 2022, 01:17:51 am »

Thanks for the update. I'm surprised no-one has a working version, but I guess OpenCL/CUDA support is on Nvidia A100 and other server-class cards.

14

GPU Compute / Accelerators / Re: GPU options as of December 2021

« on: January 19, 2022, 01:15:09 am »

Thanks - good to know for the W5500. My mobo and CPUs arrived last week and I should have the time soon to start looking at this.

15

GPU Compute / Accelerators / Re: AMD OpenCL / ROCm

« on: December 28, 2021, 02:54:57 pm »

Any update on this? OpenCL is on my list of things I'd like to have working.