Intel Xeon PHI?

[bsquared]

Originally Posted by ewmayer

Mod note: I moved/copy/edited the various KNL posts & material which had been posted to the neighboring XFX-4-sale thread to this one.



So KNL Linux-kernel support will be gone in the various Linux distros starting when? Immediately?

As noted, I was planning on using a year-old Ubuntu distro for my initial boot attempt - should that fail for some reason there is a more-specific stack recommended by Intel for KNL, have the link saved somewhere.

That discussion thread says MIC driver support is being removed. That's KNC, I believe, not KNL.

[kriesel]

Knights Corner shipped (and I have one) MIC
Knights Landing shipped (and Dave Stanfil has one Ernst used) 2nd generation MIC
Knights Hill canceled, no indication it shipped; intended as 3rd generation MIC
Knights Mill launched 2017 https://ark.intel.com/content/www/us...z-64-core.html
https://ark.intel.com/content/www/us...hz-64-core.htm

[M344587487]

Originally Posted by ewmayer

...
So KNL Linux-kernel support will be gone in the various Linux distros starting when? Immediately?
...

Whatever they've removed they've removed from kernels >=5.10, 5.10 isn't released for another month and distros follow kernel releases in their own way. Most kernels are only supported for a few months except LTS kernels, the newest is 5.4 with support until 2025. LTS kernels get backports of mainly security updates, but even if a security flaw is present in what's been removed I believe they wouldn't backport a removal as it would potentially break userspace.

tl;dr you mentioned Ubuntu so if you need the thing use Ubuntu 20.04, it uses kernel 5.4 and it is itself an LTS release so is supported for years.

[ewmayer]

The Hydra workstation KenK alerted me to just arrived from the eBay seller yesterday. It has 16GB onboard mem, no DIMMs at present, as 16GB is enough for my near-term needs. Installed a 1TB SSD and plugged in a Ubuntu 19.10 boot stick and a new WiFi USB, fired up, after Supermicro BIOS did its thing, <f11> started the Ubuntu boot, that quickly hit this:

(initramfs) Unable to find a medium containing a live file system

'help' lists a bunch of available options. What should I try?

[paulunderwood]

Originally Posted by ewmayer

The Hydra workstation KenK alerted me to just arrived from the eBay seller yesterday. It has 16GB onboard mem, no DIMMs at present, as 16GB is enough for my near-term needs. Installed a 1TB SSD and plugged in a Ubuntu 19.10 boot stick and a new WiFi USB, fired up, after Supermicro BIOS did its thing, <f11> started the Ubuntu boot, that quickly hit this:

(initramfs) Unable to find a medium containing a live file system

'help' lists a bunch of available options. What should I try?

On ddg'ing, one trick seems to use a USB2 slot rather than USB3.

Link

[ewmayer]

Originally Posted by paulunderwood

On ddg'ing, one trick seems to use a USB2 slot rather than USB3.

Link

System has 5 USB ports - 2 in the case near the power switch, 3 in the ports area of the mobo backplate. Is there a simple way to tell the difference between USB2 and USB3, or must one wire-trace to where those connect to the mobo?

Wait - just did a websearch for the Supermicro K1SPE motherboard user manual, the Supermicro site was uncooperative re. a DLable pdf, but found this:

Four (4) USB 3.0/2.0 ports on the rear I/O panel (USB 2.0 0/1, USB 2.0 5/6 or
USB 3.0 2/3, USB 3.0 7/8)
•
One (1) Onboard USB header with two USB 3.0 connections (USB 3.0 8/9) for
front control panel

I only see 3 USB ports on rear I/O panel of my mobo, but sounds similar - unplugged the wifi stick from one of those - won't be needed until post-OS-install - to make room for the boot USB, rebooted ... and we have an install screen. Thanks! Will update once install (hopefully) completes.

[paulunderwood]

Originally Posted by ewmayer

System has 5 USB ports - 2 in the case near the power switch, 3 in the ports area of the mobo backplate. Is there a simple way to tell the difference between USB2 and USB3, or must one wire-trace to where those connect to the mobo?

USB 2.0 sockets are usually black and USB 3.0 blue.

[kriesel]

It's a different style case, but the following has a lot of info on K1SPE MB and BIOS
https://www.supermicro.com/manuals/s...r/MNL-1891.pdf
(and yes it was well hidden)

downloads
https://www.supermicro.com/support/r...urce_links.cfm

[ewmayer]

Originally Posted by paulunderwood

USB 2.0 sockets are usually black and USB 3.0 blue.

Useful to know, thx.

Install seems to have gone fine, got to the "restart system now" prompt, upon which subsequent reboot got the expected Ubuntu - I paraphrase -"please remove install medium and press 'Enter'" prompt, did that, Ubuntu startup began, the little scrolling dots below the logo to effect of 'working...', but never got to the hoped-for login prompt, system is hung with black screen with mouse cursor frozen. No more time for this today, tips as to what to try tomorrow welcome.

[paulunderwood]

Originally Posted by ewmayer

Install seems to have gone fine, got to the "restart system now" prompt, upon which subsequent reboot got the expected Ubuntu - I paraphrase -"please remove install medium and press 'Enter'" prompt, did that, Ubuntu startup began, the little scrolling dots below the logo to effect of 'working...', but never got to the hoped-for login prompt, system is hung with black screen with mouse cursor frozen. No more time for this today, tips as to what to try tomorrow welcome.

This sounds bad.

One thing to try if the keyboard is responding is Ctrl+Alt+F1 or Ctrl+Alt+F2 to get you to a login prompt. Usually it is Ctrl+Alt+F7 to get you back to the GUI.

If the keyboard is not responding, select a different image at boot time -- maybe a rescue mode one

[Nick]

I don't use Ubuntu but in my Linux distribution you can press Escape during the boot dots graphic to get the old-fashioned boot messages on the console instead. which may be more helpful.