Generic CPU discussion

Tom M
Tom M
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Keith Myers wrote: You

Keith Myers wrote:

You should set Determinism to Power or Performance.  cTDP to 170 and PPL Level to 170

That will allow the cpu to maintain almost full boost clock across all loaded cores.

Workload Tuning Guide for AMD EPYC™ 7002 Series Processor Based Servers

Guide is for 7002 series but totally applicable to 7001 series also.

Can't find a PPL in bios.  Maybe a ver2 only or maybe I need to update my Bios?

Tom M

A Proud member of the O.F.A.  (Old Farts Association).  Be well, do good work, and keep in touch.® (Garrison Keillor)  I want some more patience. RIGHT NOW!

Tom M
Tom M
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Ian&Steve C. wrote: set

Ian&Steve C. wrote:

set determinism to power.

and set the cTDP to 170 (default is 155)

Will try "Power".  Performance doesn't appear to increase the average top MHz at all.

Tom M

A Proud member of the O.F.A.  (Old Farts Association).  Be well, do good work, and keep in touch.® (Garrison Keillor)  I want some more patience. RIGHT NOW!

Tom M
Tom M
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Credit: 9561182563
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Tom M wrote: Ian&Steve C.

Tom M wrote:

Ian&Steve C. wrote:

set determinism to power.

and set the cTDP to 170 (default is 155)

Will try "Power".  Performance doesn't appear to increase the average top MHz at all.

Tom M

Apparently Power did work.  Its higher.

Tom M

A Proud member of the O.F.A.  (Old Farts Association).  Be well, do good work, and keep in touch.® (Garrison Keillor)  I want some more patience. RIGHT NOW!

Tom M
Tom M
Joined: 2 Feb 06
Posts: 6432
Credit: 9561182563
RAC: 10166328

Tom M wrote: Keith Myers

Tom M wrote:

Keith Myers wrote:

You should set Determinism to Power or Performance.  cTDP to 170 and PPL Level to 170

That will allow the cpu to maintain almost full boost clock across all loaded cores.

Workload Tuning Guide for AMD EPYC™ 7002 Series Processor Based Servers

Guide is for 7002 series but totally applicable to 7001 series also.

Can't find a PPL in bios.  Maybe a ver2 only or maybe I need to update my Bios?

I have ver P2.60  which apparently is the current version for this MB.

Yes, the memory is now running at 2666, it may have been at 2400 previously.

Tom M

A Proud member of the O.F.A.  (Old Farts Association).  Be well, do good work, and keep in touch.® (Garrison Keillor)  I want some more patience. RIGHT NOW!

Keith Myers
Keith Myers
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It is in your BIOS.  If not

It is in your BIOS.  If not on the cpu page then in the AMD CBS menus

PPL = Package Power Limit

Should match the cTDP setting

 

Tom M
Tom M
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Keith Myers wrote: It is in

Keith Myers wrote:

It is in your BIOS.  If not on the cpu page then in the AMD CBS menus

PPL = Package Power Limit

Should match the cTDP setting

My server BIO doesn't have any AMD CBS menus.  I looked. Honest.

And it started locking up/unresponsive to keyboard.  I have reverted to the baseline settings.  I will try the higher cTDP with the Determinism on AUTO tomorrow.

Need to confirm its not locking up because of the CPU upgrade.

Tom M

A Proud member of the O.F.A.  (Old Farts Association).  Be well, do good work, and keep in touch.® (Garrison Keillor)  I want some more patience. RIGHT NOW!

Keith Myers
Keith Myers
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I would think it should have

I would think it should have it.  My EPYCD8 BIOS is 2.42 and has the same AGESA level as your EPYCD8-2T with BIOS 2.60

In the same manual as my board. Not unless we picked up the AMD CBS and PBS menus with our beta driver that restored the fan control.

I don't remember if the standard 2.40 BIOS had those menus or not now.

 

Keith Myers
Keith Myers
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What is your cooling solution

What is your cooling solution for the cpu??

 

Ian&Steve C.
Ian&Steve C.
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Keith Myers wrote:I would

Keith Myers wrote:

I would think it should have it.  My EPYCD8 BIOS is 2.42 and has the same AGESA level as your EPYCD8-2T with BIOS 2.60

In the same manual as my board. Not unless we picked up the AMD CBS and PBS menus with our beta driver that restored the fan control.

I don't remember if the standard 2.40 BIOS had those menus or not now.

it's in the 2.40 BIOS and for sure it's in his BIOS too.

Tom, it's on the same page as the cTDP setting. literally the same menu.

the setting that says “Package Power Limit”. 

https://i.imgur.com/SOUs6Lk.jpg

_________________________________________________________________________

Keith Myers
Keith Myers
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Thanks Ian, I was pretty

Thanks Ian, I was pretty positive it was in the original 2.40 BIOS.

 

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