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Messages - pocock

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OWC Shuttle - four SSDs, 3.5"

OWC Shuttle - one SSD, 2.5"

ZD Net pictures

The model that takes four SSDs may be more interesting for Talos II and Blackbird users

It is part of OWC's set of products for Thunderbolt but it says you can use the Shuttle by itself in any workstation that has U.2 support from a HBA.

Being more verbose, the full system comprises three parts: OWC's external Thunderbolt-to-PCIe case, an SSD carrier module, like a miniature backplane that goes in the case and finally, the Shuttle module itself.  This full system would not be relevant for Talos II / Blackbird as they don't have Thunderbolt ports, nonetheless, the Shuttle by itself may be interesting.

It is not clear how the four M.2 SSDs are combined into a single U.2 port: is this bifurcation, is there some kind of switch chipset or is there something else in the U.2 standard that allows multiple devices to be combined into a single U.2 port?

It says that they support PCIe 4.0 but it is not clear if they support the newest high speed PCIe 4.0 SSDs.


Official site

Specifications in PDF

This is a controller for multiple SSDs.  It uses a switch, not bifurcation.  As noted elsewhere, bifurcation is not really supported on Talos II

The specifications and price look interesting for workstation builds where you want to combine 2, 3 or 4 SSDs for a simple RAID-1 mirror with the Linux md RAID, btrfs or ZFS.

The benefit of buying this type of card is that only one PCIe slot is consumed for multiple SSDs.  On the systems with only two slots (Talos II Lite and Blackbird) that is an important consideration.

Specifications in PDF give a lot of detail about support for backplanes, it is not clear if you can simply connect the ports directly to U.2 SSDs using the right cable.

The M.2 SSDs can be mounted in U.2/M.2 carriers.

Has anybody tried it?

The wiki has a lot of details about how to install firmware but I couldn't see instructions about how to check the currently running firmware version.

Furthermore, Raptor appear to be using "System Package" version numbers to represent some mix of individual packages that have their own distinct version numbers.  For example, the Talos II v2.00 isn't OpenBMC 2.00.  I feel this list would look better as a table showing the Raptor version in one column and other relevant versions in extra columns.  For example, a column for OpenBMC, another for Linux kernel, etc.

Then if you log in and look at the uname output you can take the kernel version and try to deduce which System Package from Raptor you are running.


Can you please send the output of this command and your contact details in an email?

Code: [Select]
$ cat /proc/cpuinfo  | tail -12

It shows some more CPU and motherboard details

Please send me an email with your contact details, you can find my contact details here

Operating Systems and Porting / Re: [NEWS] Debian 11 is out
« on: September 10, 2021, 04:50:11 pm »

When I bought my Talos II, I did a fresh install of buster

As mentioned elsewhere, I rebuilt my kernel for a 4k page size and created Btrfs filesystems with 4k

I recently made a dist-upgrade to bullseye, Debian 11.  As part of the upgrade, I rebooted into the 4k kernel from buster so I could continue accessing my Btrfs filesystem

Then I built a 4k version of the 5.10 kernel package from bullseye.  Rebooting into that and the system runs fine.  I pushed my kernel here:

After a week or so I had a crash, I'm not sure if that is the bullseye kernel or if it is just what I was doing at that moment in time.  I've been doing some development with GStreamer and VAAPI for the AMD Radeon cards and that has also produced some crashes so I'm not sure if this is because of bullseye or the testing that I'm doing with the GPU.

GNOME appears to be slightly faster when switching workspaces compared to buster.


Did you change the settings to disable Wayland and use regular Xorg?

That is what I'm using (Debian 10) and it is working well

General OpenPOWER Discussion / Re: News?
« on: July 01, 2021, 06:07:29 pm »
That's a handy little comparison chart.

Thanks for this feedback

The integrated audio on the Blackbird is weak on lows and bass, and the mic input needs to be turned all the way up seemingly.

I'm using the Soundblaster X-Fi USB device

Output:   Talos II -> USB cable -> X-Fi -> S/PDIF (fibre optic, digital) -> Harmon Kardon AV system -> B&W DM604

Input: Rode lapel mic -> TRRS / 3.5mm converter -> 1/4" converter -> X-FI -> USB -> Talos II

It is working really well

For digital output to S/PDIF you don't need expensive hardware, any USB-to-S/PDIF device is satisfactory

Output is easy, but for microphone input, every component is significant.

Does anybody know about support for Firefox WebAssembly (WASM) on ppc64le?

Some web sites like Zoom don't work without it.

Since March, it looks like Jitsi Meet may require WebAssembly too

Is WASM available in any recent version of Firefox?  Can it be enabled if I rebuild Firefox from source?


The download here is working for me, this is a newer version in beta:

I'm using it with the autotools and C++ plugins.

Even on VoidLinux the package is listed as unavailable. So I guess, it's a bigger issue.

You can still download it directly from the Eclipse site using the link I provided above.

It does not work for me too.

Which Linux and Java version?


I took the download of Eclipse for ppc64el and tried it on my system.

It crashes at startup, I opened a bug report with full details, download link, stack trace

Does it work for anybody else?

To test it:

Code: [Select]
mkdir ~/eclipse-test
cd ~/eclipse-test
wget ''
tar xzf eclipse-SDK-4.19-linux-gtk-ppc64le.tar.gz

General Discussion / Re: AMD RX 6900 XT from Sapphire NITRO [WIP]
« on: March 15, 2021, 04:12:38 am »

Are you using Xorg or Wayland?

It is a good idea to try with both

Have you contacted the amdgpu developers to make a bug report?

General Discussion / Re: AMD RX 6900 XT from Sapphire NITRO [WIP]
« on: March 09, 2021, 07:51:38 am »

As you are using the latest Fedora I suspect you have the latest dependencies, nonetheless, can you confirm you checked the version of:

amd firmware (maybe take directly from Git and copy into your system /lib directory)


Xorg or Wayland?  Try both

Maybe we need to develop a small reporting script that people can use to build a comprehensive report of each GPU test, all dependency versions, checksums, logs, key config values, kernel config, etc


It looks like retailers are building combined Ryzen + RX 6800 XT systems with OEM parts and you have to buy the whole system instead of buying the GPU alone.

Has anybody else noticed this trend or been able to get the GPU standalone for a POWER9 system?

General OpenPOWER Discussion / Re: News?
« on: March 06, 2021, 11:21:40 am »
When the new Blackbird is available I'll be happy to update my blog about it

I suspect each user has different priorities:

- for some users the GPU width is the biggest issue

- for other users the CPU core limit is the biggest issue

I suspect fewer people will be worried about the 2 memory channel issue but as part of the overall picture, it swayed me towards the bigger boards.

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