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 Posted: Wed, 21st May 2014 11:54 Post subject: |
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Corsair AX1200i for that kind of hardware is absolutely overkill.
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Werelds
Special Little Man
Posts: 15098
Location: 0100111001001100
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| Posted: Wed, 21st May 2014 12:10 Post subject: |
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Even if it wasn't overkill, for a server that you're supposedly serious about you don't get a consumer grade PSU, nor do you stick it into a 900D. There's better cases that can house the dual PSUs you want in a server like this. And yes, you will only need about half that power at most.
Look at Chenbro or some brand like that.
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| Posted: Wed, 21st May 2014 13:58 Post subject: |
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Thanks for the suggestion however this is still way to little help. Do you have any guides I can read up on, since I am completely new in this?
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Werelds
Special Little Man
Posts: 15098
Location: 0100111001001100
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| Posted: Wed, 21st May 2014 14:12 Post subject: |
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Not really, because I personally don't build servers at such crazy hardware 
Where is this to be used? Is it for a home server or is it actually meant to host a corporate application? If it's the latter, you want to use a chassis that'll fit in a rack; Supermicro or something like that.
I'm also pretty sure the dual CPU bit is way overkill, but again, you need to be a bit more detailed about exactly what'll be running on it, who it'll be used by, where it'll be running.
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| Posted: Wed, 21st May 2014 14:26 Post subject: |
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It's for work. It will be used to do a lot of fast fourier transforms on rather large data sets. So we need a lot of cores and a lot of memory.
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Werelds
Special Little Man
Posts: 15098
Location: 0100111001001100
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| Posted: Wed, 21st May 2014 14:37 Post subject: |
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Ah, the CPUs make sense then.
However, have you considered using GPUs for this instead? Given the nature of FFT, that can be done so much quicker via OpenCL or CUDA on a GPU, with much less hardware strain. If you are writing the software yourself or if whatever you use can do it through those, I'd highly recommend that as you'll get much better results out of it.
I can't really recommend any specific products otherwise though, sorry. Just not my expertise; have you checked on some dedicated hardware forums yet?
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| Posted: Wed, 21st May 2014 16:55 Post subject: |
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I have no clue about the FFT, but does all of that data need to be in the memory at once? Streaming not possible?
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iNs
Posts: 91
Location: Poland
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| Posted: Wed, 21st May 2014 22:08 Post subject: |
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What Werelds said (regarding psu's and form factor) + why not opt for a ready solution?
And no offence, but since you have no clue about this, why would someone choose you to build it? :S
Regarding the parts, with long term load oriented machines it's all about the costs (actually, when isn't it?) So in order to make it whole you'd need to know the possible budget anyway (whether to go for enterprise or consumer grade hard drives for example or i don't know, ecc memory if error correction on that level might be relevant).
Futhermore, what would be the environment for this server? Granny's basement or properly cooled room / datacenter?
What you wrote above is still little info.
sience is a cold-hearted bitch with a 14-inch strap-on
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Werelds
Special Little Man
Posts: 15098
Location: 0100111001001100
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| Posted: Wed, 21st May 2014 23:48 Post subject: |
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| Atropa wrote: | | The ready solution seemed way more expensive. This might be because they use some more allround server solutions or because they actually know what they are doing:/. I was asked to review the choise of hardware and asked you people . Consumer grade harddrives should be enough i think end ecc memory should not be necessary. At least I think that is why the build it yourself solution is looked at. It will be placed in a properly cooled room. |
ECC might actually matter to your friend, ask him. If the data sets are that big, if you get an error early on that'll cascade through and fuck things up quite royally
Those ready-to-go solutions are more expensive usually because they use enterprise-grade drives + dual PSUs (and sometimes even a UPS built in).
Based on what you're saying, both are desirable. Clearly the system should not be allowed to crash mid-operation if the PSU fails or there's a power failure and if those datasets are constantly changing then the drives do matter. At the very least it needs a RAID-1 setup to cover for HDD failure.
A 1U case doesn't sound necessary, which means that what I said earlier stands: look at Chenbro or similar brands for the case, go for a much lower power PSU but with better efficiency (and 2 of them).
As for forums? I'd recommend Tweakers.net but that's Dutch only; both Overclocker(s) (.com and .co.uk) sites are probably a good bet too. |
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Werelds
Special Little Man
Posts: 15098
Location: 0100111001001100
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| Posted: Thu, 22nd May 2014 09:24 Post subject: |
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| Atropa wrote: | | We solve differential equations on large lattices. I haven't ever experienced(at least i don't think so) memory based errors in the solutions when I run smaller systems. Though this of cause is horrible statistics it still suggests that errors in the solutions is probably more due to the solution method than the memory. But then again wikipedia agree on the need of ecc. This is way more confusing than expected. |
That's kind of the thing with ECC unfortunately.
Errors are incredibly uncommon, but in situations where you can't afford any errors due to an electrical problem (because that's what it'd be) it's the only way to ensure it.
With FFT the effect would be relatively mild, but I still don't think you want errors in these calculations at all 
| Quote: | | Some sort of raid setup was planned. Does the actual drives matter much?(As long as it is not the cheapest of the cheapest). The pre-build solution has some very expensive harddrives(due to some weird form factor?). |
I'd certainly still stick with one of the higher tiers of drives, purely for reliability reasons. Western Digital's RE drives for example. Fortunately disk access time isn't a big issue in this case, so you'll be fine with "just" SATA rather than SAS.
| Quote: | | I will try and ask on Overclockers when I get the time. Thank you very much |
No problem |
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| Posted: Thu, 22nd May 2014 10:34 Post subject: I have left. |
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