Generic CPU discussion

Tom M
Tom M
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Keith Myers wrote: If you

Keith Myers wrote:

If you are content with the first generation memory speeds, you can bump up to 16 cores with the 7351 cpu running around $600. Or to 24 cores with the 7401 around $600-800

If you want faster memory, then you need to jump to Rome cpus like the 16 core 7282 running around $1300-1400 and can run the memory at 3200.

 

What about a 7401 (slower cpu 2Ghz, faster memory3200 Mhz)?

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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With 1st generation of Epyc,

With 1st generation of Epyc, you are stuck with 2400/2666Mhz memory.  Can't go any faster with the memory than that.

If you want faster memory you need to move to Rome or Milan. Look at this chart for your choices.

Epyc Wikichip

 

Tom M
Tom M
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Keith Myers wrote: With 1st

Keith Myers wrote:

With 1st generation of Epyc, you are stuck with 2400/2666Mhz memory.  Can't go any faster with the memory than that.

If you want faster memory you need to move to Rome or Milan. Look at this chart for your choices.

Epyc Wikichip

I missed that a 7401 is first gen....  :(

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!

Ian&Steve C.
Ian&Steve C.
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the 4th digit denotes the

the 4th digit denotes the generation.

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Tom M
Tom M
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The processing time on GW cpu

The processing time on GW cpu tasks has dropped by nearly 50% (I think) on both my Ryzen 9 box and my Epyc box.

I am assuming it has to do with the differently named tasks/files I am getting. (h1_0992.65_O2C02Cl5ln0_....)

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!

Robert
Robert
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I've processed about a dozen

I've processed about a dozen of these  (h1_0992.xx_O2C02Cl5ln0_....) and they seem to be running in about the same time.

Tom M
Tom M
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Robert wrote: I've processed

Robert wrote:

I've processed about a dozen of these  (h1_0992.xx_O2C02Cl5ln0_....) and they seem to be running in about the same time.

I guess I had some shorties.  Mine have also returned to "the usual" processing speed.

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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I just updated to an EPYC

I just updated to an EPYC 7401P (24c/48t).

In the bios for the CPU it talks about "Determinism" (Auto, Performance, Power).

Is anyone setting this different from the Default of Auto?

I noticed that my "turbo" CPU speed is down a few hundred MHz from just short of 3 MHz to more like 2.6 MHz.

I am wondering if trying the "performance" is likely to actually move my CPU speed up significantly?

I am sure it will draw more power :)

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!

Ian&Steve C.
Ian&Steve C.
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set determinism to

set determinism to power.

and set the cTDP to 170 (default is 155)

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Keith Myers
Keith Myers
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You should set Determinism to

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.

 

 

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