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Messages - Woof

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31
Mod Zone / Initial findings running on water cooling
« on: March 24, 2023, 10:12:03 am »
I'd like to share my early, initial findings water cooling (finally!) my Talos II using this kit with some Thermal Grizzly paste:

https://store.vikings.net/en/water-block-assembly-for-power9-cpus

I have dual 18-core CPUs, testing with only one CPU for now. I'm running on a test bench, with a simple AIO radiator/pump/reservoir combo (Alphacool Eisbaer). I'm stressing the CPU using my own benchmark (I do numerical 'stuff') so I have the same on Threadripper, Apple M1 Ultra, etc. A photo of the messy test bench is attached.

The numbers with the big, noisy HSF are in the mid-70s (Celsius, I'm not a savage...) with the fans running LOUD! And with the water block it's mid-40s, with the fans stalling on the radiator because they're running so low. It's running silently, which is very pleasing!

Next is to get the second CPU plumbed in.

32
Talos II / Re: Unsatisfactory performance of SSD drives
« on: February 26, 2023, 08:20:25 am »
Really useful graph, thanks for taking the time!

33
Talos II / Re: Unsatisfactory performance of SSD drives
« on: November 30, 2022, 04:18:56 am »
Hmm, this is interesting and having tried the same on my Talos II with Debian I'm getting numbers slower than expected. With a Samsung NVMe PM9A1 (think of it as a 980 Pro with a U.2 connector) I see 3.0GB/s in Disk Utility and:

Code: [Select]
sudo /sbin/hdparm -t /dev/nvme0n1

/dev/nvme0n1:
 Timing buffered disk reads: 2512 MB in  3.00 seconds = 837.20 MB/sec

This is connected via PCIe 4x. We have the same HighPoint card and PM9A1 disks on x64 systems with Debian to try later.

34
Applications and Porting / Re: Clion, VSCode, IDE options?
« on: November 24, 2022, 05:03:40 am »
Quote
So, how did you get clang-tidy inspections (visible on your screenshot) as I understand they use clangd?

Probably a happy accident of my installing clang-tidy and clangd on my system (it's a few months ago, I may have built them from source) then symlinking them to where CLion expects to find the x64 versions (there are probably also tweaks to CLion's config files too).

I did read through the qemu stuff but was happy enough with how things were working that I didn't (yet) feel the need.

Continued use of Eclipse revealed problems with the debugger and CMake projects, but CLion continues to be usable (but confession time: I'm a full-fat Visual Studio fan and nothing beats it, not even CLion on x64, and especially not the slow-to-start Xcode on the fastest of Mac Studios).

35
GPU Compute / Accelerators / Re: Talos II GPU slot preference
« on: November 03, 2022, 02:50:11 am »
Only rebuilding the kernel with patches. I've been lazy and plugged in a VGA to HDMI adapter to see the BMC boot, so never got round to what should be the next steps.

36
GPU Compute / Accelerators / Re: Talos II GPU slot preference
« on: October 31, 2022, 06:30:28 am »
I finally took a look and I'm running with a custom 5.10.92 kernel with patches described here:

https://wiki.raptorcs.com/wiki/Operating_System_Specific_Workarounds/Debian#Debian-Specific_Issues_and_Workarounds

This is something I did at the start of the year and didn't realise I was still on the same old kernel. AFAIK this is fixed already in the upstream.

37
Talos II / Re: Arctic Tern bracket?
« on: October 26, 2022, 10:18:50 am »
Raptor said:

Quote
"We're working up a bracket solution and will be happy to send one out free of charge to anyone that has a carrier card once it is completed."

38
GPU Compute / Accelerators / Re: Talos II GPU slot preference
« on: October 21, 2022, 12:43:38 pm »
@rheaplex I'll let you know next week (it's at work).

39
Applications and Porting / Re: Clion, VSCode, IDE options?
« on: September 27, 2022, 10:53:19 am »
I took another look at CLion and followed the (brief) instructions for getting it running on non-supported CPUs. It's kinda lengthy to get it all going (it needs the JetBrains JDK building, which needs boostrapping with JDK19, which itself needs bootstrapping with JDK18... which needs bootstrapping with JDK17, which at least is available in Debian's repo).

The only thing I've found not to work is the clangd integration (which needs JetBrain's own) but everything else works great. It's a Java IDE but I guess I have to do something with my CPUs...

I didn't try VSCode, so I don't know how much work it is to getting running on Debian.

But to answer myself or anyone else wondering which native IDEs work on Power9 with Debian: Eclipse CDT and CLion, and so far I'm quite happy with CLion.

40
GPU Compute / Accelerators / Re: Talos II GPU slot preference
« on: September 26, 2022, 11:01:44 am »
I should swap it back in the name of science and see what unscientific feeling it gives me…

I tried a few different AMD cards in the past few weeks too, and wasn’t impressed with any until this happy accident.

41
GPU Compute / Accelerators / Talos II GPU slot preference
« on: September 26, 2022, 10:08:20 am »
I have an odd observation and I'd be interested if others have the same, or it's just a bunch of coincidences. Whilst juggling my PCIe cards around to find room for the Arctic Tern board I moved my graphics card (a WX9100) from CPU 2 to CPU 1, and suddenly the machine feels snappier.

I'm running Debian 11 and CPU 1 appears to be doing most of the work (judging by which runs the hottest) so I'm wondering if that's what makes the difference. I always had the impression the graphics were laggy, but now all of a sudden the system feels a lot more usable. That said, the OS received updates, the internal VGA is now disabled, probably other stuff, and the PSU was replaced (the logs were full of MasterDetectionFailure and I got it down to a PSU fault).

42
Applications and Porting / Re: Clion, VSCode, IDE options?
« on: September 26, 2022, 09:33:42 am »
Resurrecting this...

I've been using Eclipse CDT for a while now and it's a little clunky. Importing a CMake project works fine-ish (backed by a Makefile), it builds but is full of erroneous errors, though the debugger works as expected so that's good. Trying to get a CMake/Ninja project to work, to have a multi-core build, has the same 100s of errors to ignore but won't let me debug. In general it's usable of sorts, and has good SVN and Git integration, but I'd really like something better.

mparnaudeau mentioned CLion, which I'd be very interested in using, but last I read it was missing the debugger adapter or some other closed-source component? Do you have more info on this?

MPC7500 mentions VSCode on Void being up-to-date, but I settled on running Debian so I'm not able to try this.

As for other options, I tried Kate with CMake and it wasn't a good experience. It builds and lets me set breakpoints, but then inspecting variables seems to only work via gdb.

43
Talos II / Re: Arctic Tern bracket?
« on: September 12, 2022, 12:51:18 am »
That's what I was thinking of doing. Probably not any time soon though.

44
Talos II / Arctic Tern bracket?
« on: September 09, 2022, 11:07:42 am »
My Arctic Tern board arrived but doesn't have a PCIe bracket, and looking at the photos they don't appear to do so. I'm guessing others have them now, how is it supposed to hold in place securely when the mobo is vertically mounted?

45
General Discussion / Re: HighPoint SSD7505 RAID tools for ppc?
« on: August 11, 2022, 06:29:00 am »
I have a HighPoint SSD7580A and the same issue. I'm running the drives without RAID for the time being, but was also planning on using Linux on an x86 to configure the card.

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