Motherboard and System Reviews

Mr P Hucker
Mr P Hucker
Joined: 12 Aug 06
Posts: 838
Credit: 518105012
RAC: 108231

Keith Myers wrote:Only the

Keith Myers wrote:

Only the big cities have fiber in the city centers.  Mainly to serve business. The SouthEast of the US has the biggest influx of fiber connections based on the DSL Reports forums posts.

I have a telephone Central Office in my town of 7000 and it serves out nothing but copper lines. Not a single foot of fiber to be seen.  I can't even get bonded ADSL2+ connection because there are no more pairs left to use.

Moot point as AT&T stopped offering bonded anyway even if the capacity was there. They have no intention of replacing or upgrading their wire plant until the government forces them to. And they have many lawyers.

The UK government has gone nuts on internet expansion.  My parents' village is only 640 people, but they have fibre to the premises available at 1 Gbit.  Yet my town of 3500 only has fibre to the cabinet at up to 80Mbits depending how close to the cabinet you are.

If this page takes an hour to load, reduce posts per page to 20 in your settings, then the tinpot 486 Einstein uses can handle it.

Tom M
Tom M
Joined: 2 Feb 06
Posts: 6214
Credit: 8719339260
RAC: 5827708

Peter, I am confused about

Peter,

I am confused about the "other" GPUs.

I suspect in this case that GPU is plugged directly into the epyc motherboard.

Most of the epyc motherboards "we" are using are specific to gen 1 or gen 2 CPUs. Those (I think) top out at pcie gen 3 speeds.

So I am curious about the brand and model as well as any other details.

Tom M

 

 

A Proud member of the O.F.A.  (Old Farts Association).  Be well, do good work, and keep in touch.® (Garrison Keillor)

Ian&Steve C.
Ian&Steve C.
Joined: 19 Jan 20
Posts: 3890
Credit: 42614022644
RAC: 60116115

Tom M

Tom M wrote:

Ian&SteveC,

Your system continues to perform remarkable feats of E@H RAC's for a single GPU system.

I just noticed that you are running a 3rd Generation EPYC CPU.  Could you talk about your Motherboard?

Is it running PCIe gen4?  Does that seem to be making a difference on your GPU crunching?

Thank you.

Tom M

 

the motherboard is the AsRock Rack ROMED8-2T. Basically an updated version of the EPYCD8 board. It has 7x full size x16 slots, all PCIe gen 4. It supports EPYC 7002/7003. 
 

yes the GPU is running PCIe gen 4, but no it doesn’t make any difference to speed for Einstein or GPUGRID. 
 

I use this system as my main desktop system. It’s watercooled on both the CPU and GPU. 

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Ian&Steve C.
Ian&Steve C.
Joined: 19 Jan 20
Posts: 3890
Credit: 42614022644
RAC: 60116115

Peter Hucker wrote:Tom M

Peter Hucker wrote:

Tom M wrote:

Ian&SteveC,

Your system continues to perform remarkable feats of E@H RAC's for a single GPU system.

I just noticed that you are running a 3rd Generation EPYC CPU.  Could you talk about your Motherboard?

Is it running PCIe gen4?  Does that seem to be making a difference on your GPU crunching?

Thank you.

Tom M

Having 13 graphics cards might help him :-)

He has some invalids though.  Overclocking?

I run Gen 2 single lane on risers, but then I have slower GPUs than him.

tom is talking about the single GPU system specifically. The others don’t make this one faster or anything. 
 

the Nvidia application produces more invalids than the AMD/ATI applications. But it outperforms the AMD cards by such a huge margin that the 4-5% invalid rate is an acceptable loss. But I’m also running a completely custom application ;) 

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Mr P Hucker
Mr P Hucker
Joined: 12 Aug 06
Posts: 838
Credit: 518105012
RAC: 108231

Tom M wrote: Peter, I am

Tom M wrote:

Peter,

I am confused about the "other" GPUs.

I suspect in this case that GPU is plugged directly into the epyc motherboard.

Most of the epyc motherboards "we" are using are specific to gen 1 or gen 2 CPUs. Those (I think) top out at pcie gen 3 speeds.

So I am curious about the brand and model as well as any other details.

Tom M

If you mean mine, I have R9 280X / 7970 cards on a riser through USB cables on a multiplexer chip that only shares 1 lane of PCI-E V2.  They do just fine on any project.  Most of the time the GPU is thnking and not communicating over the bus.  You only need a fast bus for games.

If this page takes an hour to load, reduce posts per page to 20 in your settings, then the tinpot 486 Einstein uses can handle it.

Mr P Hucker
Mr P Hucker
Joined: 12 Aug 06
Posts: 838
Credit: 518105012
RAC: 108231

Ian&Steve C. wrote:the Nvidia

Ian&Steve C. wrote:
the Nvidia application produces more invalids than the AMD/ATI applications. But it outperforms the AMD cards by such a huge margin that the 4-5% invalid rate is an acceptable loss. But I’m also running a completely custom application ;) 

The day I use Nvidia is the day they stop thwarting double precision.  I also run the MW project.  32:1 what a farce.  I collect the old 4:1 AMDs, sometimes with broken display outputs so nice and cheap!

If this page takes an hour to load, reduce posts per page to 20 in your settings, then the tinpot 486 Einstein uses can handle it.

Keith Myers
Keith Myers
Joined: 11 Feb 11
Posts: 4871
Credit: 18334759203
RAC: 6012801

Peter Hucker

Peter Hucker wrote:

Ian&Steve C. wrote:
the Nvidia application produces more invalids than the AMD/ATI applications. But it outperforms the AMD cards by such a huge margin that the 4-5% invalid rate is an acceptable loss. But I’m also running a completely custom application ;) 

The day I use Nvidia is the day they stop thwarting double precision.  I also run the MW project.  32:1 what a farce.  I collect the old 4:1 AMDs, sometimes with broken display outputs so nice and cheap!

AMD does the same with their current models.  They too "thwart" the double precision capability.

1:16 FP64 for the past several generations.

 

Mr P Hucker
Mr P Hucker
Joined: 12 Aug 06
Posts: 838
Credit: 518105012
RAC: 108231

Keith Myers wrote:Peter

Keith Myers wrote:

Peter Hucker wrote:

Ian&Steve C. wrote:
the Nvidia application produces more invalids than the AMD/ATI applications. But it outperforms the AMD cards by such a huge margin that the 4-5% invalid rate is an acceptable loss. But I’m also running a completely custom application ;) 

The day I use Nvidia is the day they stop thwarting double precision.  I also run the MW project.  32:1 what a farce.  I collect the old 4:1 AMDs, sometimes with broken display outputs so nice and cheap!

AMD does the same with their current models.  They too "thwart" the double precision capability.

1:16 FP64 for the past several generations.

Yes, they both annoy me, but Nvidia annoys me twice as much with 32:1!  MW uses FP64, and everything uses some of it, so I always go for old cards that have a lot of it.  Nice and cheap too, even if they do use a shitload of power.

When the plugs and cables supplying the computers get warm, is that a bad thing?  :-)

When I manage to heat up the incoming cable to my house, then things get bad.... or maybe they'll just say "good boy, making us lots of money, have a bigger cable!"

If this page takes an hour to load, reduce posts per page to 20 in your settings, then the tinpot 486 Einstein uses can handle it.

ace_quaker
ace_quaker
Joined: 21 May 06
Posts: 6
Credit: 416199818
RAC: 752440

Ian&Steve C. wrote: Tom M

Ian&Steve C. wrote:

Tom M wrote:

Ian&SteveC,

Your system continues to perform remarkable feats of E@H RAC's for a single GPU system.

I just noticed that you are running a 3rd Generation EPYC CPU.  Could you talk about your Motherboard?

Is it running PCIe gen4?  Does that seem to be making a difference on your GPU crunching?

Thank you.

Tom M

 

the motherboard is the AsRock Rack ROMED8-2T. Basically an updated version of the EPYCD8 board. It has 7x full size x16 slots, all PCIe gen 4. It supports EPYC 7002/7003. 
 

yes the GPU is running PCIe gen 4, but no it doesn’t make any difference to speed for Einstein or GPUGRID. 
 

I use this system as my main desktop system. It’s watercooled on both the CPU and GPU. 

Ive speced out a few threadripper pro or epyc systems, threadripper pro is a mixed bag due to its only Zen2 cores (For now as the threadripper 5000 parts are exclusive to Lenovo) and lack of good availability on the secondary market.

Epyc also has some availability issues due to Dell and Lenovo chip locking, but seems to be a lot better secondary market options.  If your daily driver is an Epyc, do you have a good sound/USB/wireless pcie card recommendations (hopefully with linux support)? Threadripper Pro is nice as it already has these onboard.  Filling slots with these other cards wont bother me too much as I don't have the budget to max it with video cards anyway.   Just wondering how you get around the lack of ports and onboard stuff.

Ian&Steve C.
Ian&Steve C.
Joined: 19 Jan 20
Posts: 3890
Credit: 42614022644
RAC: 60116115

ace_quaker wrote:Ive speced

ace_quaker wrote:

Ive speced out a few threadripper pro or epyc systems, threadripper pro is a mixed bag due to its only Zen2 cores (For now as the threadripper 5000 parts are exclusive to Lenovo) and lack of good availability on the secondary market.

Epyc also has some availability issues due to Dell and Lenovo chip locking, but seems to be a lot better secondary market options.  If your daily driver is an Epyc, do you have a good sound/USB/wireless pcie card recommendations (hopefully with linux support)? Threadripper Pro is nice as it already has these onboard.  Filling slots with these other cards wont bother me too much as I don't have the budget to max it with video cards anyway.   Just wondering how you get around the lack of ports and onboard stuff.

the ROMED8-2T has two onboard USB 3.0 ports. I'm only using one port for both my KB&mouse via the KVM switch. so one is free for the occasional thumb drive use. there are also two front panel USB 3.0 ports available via the header on the motherboard.

There is also a USB-C port on the rear IO, as well as a front panel USB-C header on the motherboard.

I don't really have need for audio, but it seems to be handled fine via the Nvidia video card, it has it's own sound controller and passes the sound through the DP or HDMI interface.

 

if you have a need for dedicated audio and/or additional USB ports, you can use PCIe add-in cards to add those functions.

 

there are plenty of EPYC CPUs available that are not vendor locked.

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