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2P/4P advice needed

Z

zer0sum

n00b
Joined
Aug 3, 2009
Messages
21
Looking to build a 2P or 4P system and I have limited space so I am leaning more towards the 2P setup :(

I can order these parts through my work and write it off as a test box, so I am looking for some advice on how to get the most PPD whilst keeping things small and quiet.
It will also end up being a kvm host with a lot of other VM's, but if the VM's are quiet then the folding can crunch along at high speed.

For the 4P I really only have the following option:

H8QG6-F
4 x 6282SE
16 x 8gb ram = 128gb ram

Or I could drop down to 6176 or even 6128's

then for 2P I can run with either AMD or Intel:

Asus KGPE-D16
2 x 6282SE
16 x 8gb ram = 128gb ram

Asus Z9PR-D12
2 x E5-2620
12 x 8gb ram = 96gb ram

Any advice appreciated.
 
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Depends on how many VM you plan to run, but the 4P route would give you a lot more flexibility and it is 4-way goodness :)
 
so is space the only thing holding you back from going the 4p route? work is fitting the bill, shouldn't you be going all out :D
 
My only input, what's with all of the ram? Is that just because of the VM's? If not, you really don't need that much ram.
 
Space, noise and heat are all big issues as I live in New York :(
Looked at Spotswood's tech trays and they look pretty decent.

How much noise does a 4P with hyper212's make?

My current E3-1230V2 is running 30+ VM's when I need them. Mostly networking and security appliances so the load is relatively low, but I really need to upgrade so may as well make the most of things
 
bigted said:
so is space the only thing holding you back from going the 4p route? work is fitting the bill, shouldn't you be going all out :D
Click to expand...

This. 4P or bust. No BS, it's too hot talk. I live in FL and my man cave is a freaking sauna right now.

Man up! Go 4P!
 
Two 4P rigs, in my sig, both cooled with Musky modded Hyper 212+.
Extremely quiet running 100%. Not silent but not even in the same neighborhood as a screaming server.
Plus, a 4P MB is not much larger than "most" 2P MBs in my limited experience.
The heat output and power required will be a lot larger with a 4P.
However, you can always run 2P on a 4P MB in the summer and 4P in the cold of winter :)
Can never run 4P on a 2P MB though. :D
 
I watch the Discovery Channel.....
And stayed at a Holiday Inn Express last night......

Plus, trial-and-error is a great teacher :eek:
 
zer0sum said:
Looking to build a 2P or 4P system and I have limited space so I am leaning more towards the 2P setup :(

...
Asus KGPE-D16
2 x 6282SE
8x2gb 1.35v ram
SDD
Rosewill 4U case
Noctua fans
...

Any advice appreciated.
Click to expand...

This is ~$1600, whisper quiet, folds P8101 (worst job) in 21:00 TPF like clockwork.

It can handle big GPU cards, and since it's dual processor, can be turned into a Windows machine easily.

Note, if you want the RAM to run at 1600mhz PICK RAM FROM THEIR LIST. Normal gaming ram (XMS) won't do it, even though it the box and literature says otherwise. They are finally aware of the problem.
 
How do you do that??? Interesting. ASUS knows nothing other than XMS doesn't work right on their boards.
 
I have been eyeing that Asus board for a while :)

Can it be overclocked at all like the supermicros?
 
@Qinsp, You can read the RAM's SPD, that will contain the normal speed and timings and the XMS speed and timings, you can then chnage the normal speed and timings to the same as the XMS, then you flash the SPD with the new settings.
tear has made some software to do this on SuperMicro boards, though it can be done on other boards.
tear's guide and software for memory flashing

@zer0sum, As far as I know you can OC on any board if your chips are engineering samples, but you can only OC retails chips on SuperMicro boards with 61xx chips.
 
zer0sum said:
I have been eyeing that Asus board for a while :)

Can it be overclocked at all like the supermicros?
Click to expand...

Only the 4p Supermicro boards that have custom bioses can be overclocked via the reference clock.

AMD ES chips can overclock via multiplier regardless of the board they are installed in.

So No.
 
Note about that ASUS Opteron Board KGPE-D16. It is too deep to fit in a normal eATX case. It is too deep. The width is normal, but it's 1/2" deeper.
 
Deep? bit confuse, you have the case on its side, what is 1/2" larger, the width or hight?
 
Anyone know the speed difference between the 2P setups?

2 x 6282SE is 32 cores @ 3ghz = 96ghz)

2 x E5-2620 is 12 cores / 24 threads @ 2.3hz = 55.2Ghz
 
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Spazturtle said:
Deep? bit confuse, you have the case on its side, what is 1/2" larger, the width or hight?
Click to expand...

When I tried to put it into an eATX case, there are no mounting holes on the opposite edge of the the backplate side (where cards protrude out the back), and it hit a HDD bay support.

When I have a plate on a machine, and I'm looking at it, width is X, depth is Y, and height is Z.

It's plug and play in the Rosewill 4U server case.
 
zer0sum said:
Anyone know the speed difference between the 2P setups?

2 x 6282SE is 32 cores @ 3ghz = 96ghz)

2 x E5-2620 is 12 cores / 24 threads @ 2.3hz = 55.2Ghz
Click to expand...

The best metric is perhaps the TPF on the P8101, which is the biggest and most common BigAdv.

The 2P 6282 is 21:00 and a dual hex core Xeon 1366 (SMP24) at 3.0ghz is 30:00 (lower is better, drop dead = 34:30 TPF)

How SB compares? I dunno. Hard to get true average TPF's.

The 6282 ES (engineering samples) can be found on Ebay for about $400.
 
zer0sum said:
Anyone know the speed difference between the 2P setups?

2 x 6282SE is 32 cores @ 3ghz = 96ghz)

2 x E5-2620 is 12 cores / 24 threads @ 2.3hz = 55.2Ghz
Click to expand...

Its not that simple.... IPC (Instructions per clock) are not equal between those two architectures.

But the AMD rig would be faster by my extrapolation...
a 4p of 62xx at 3ghz is 9m4s on 8101
and a 1p of 3930k@4.4Ghz is 32m5s
That would put it on par with a 2.2ghz 2p of dual hex... should scaling be perfect.

Double the time on the 4p to get to a 2p (G34 scaling is nearly perfect)
gets you 18m8s

Even with a generous 5% margin of error ... the amd rig comes out vastly on top.

Even a pair of E5-2660 comes out slower than double the 4ps time.
 
zer0sum,
This thread has motivated me to offer an ATX/EATX open frame style tray:



And I'll soon be offering the same for SWTX boards. :D
 
Patriot said:
a 4p of 62xx at 3ghz is 9m4s on 8101
Click to expand...

That's a typo, should be 10:04. But still, I agree the AMDs should be faster. 2p e5-2670@3.0 takes ~16:45 on 8101, that translates to ~22mins if run at 2.3Ghz (the all core turbo of 2620s). Four less cores in 2p E5-2620, so race is already over.
 
Spotwood that is awesome news. I was the one that emailed you asking about EATX and SSIEEB as well as the lower tray. I am definitely up for a case once I work out the parts, and I am leaning towards a 2P setup :)

Thanks for the all the figures, I didn't think it was as simple as the combined speed of all cores :D

I found a thread on OCN that has 2 x E5-2660 @ 2.7GHz with a TPF of 19:30 so it seems I should try and get into the 2650 or above if I am going intel

So it seems 2P 6282's and E5-2650's might both run a similar ~20min speed
 
The 2P 6282 speed I listed is factory 2.6 clock with DDR3-1333, normal Ubuntu 10.04-64 and normal 7.3.6 install. By following Musky's (and others) install instructions with a RAMDISK, and other documented tricks, it might run significantly faster.

I'd venture a guess you could drop that 21:00 time by 10% by tweaking. It's on my list-of-things-to-do.
 
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