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Former Member
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Re: Cruncher new build

If it's true, bulldozer may in fact be a good chip after all. Read the entire article...


I read the article. I sincerely hope AMD will bounce back in shape... I believe that the 8 core cant be wrong. You see I believe the more physical cores a chip has, the better it will be once the devs and software are effectively using the cores.

I think, and I may be wrong, that the current software (and it may even apply to Linux) are not even using all 8 cores efficiently.

I wouldnt be surprised to see the Linux kernel being modified soon to effectively use all cores to their maximum potential, and when that happens, the 8 core chips will be ahead of anything else with 4 & 6 cores... The 8 core chip might just be ahead of its time.

After all,the Bulldozer chip is a consumer chip right? I understand most consumer applications are not even capable to use more than 2 cores, and most games dont even see all cores. I think the Bulldozer is just for now a "misunderstood" chip. same applies for Intel optimized benchmarking applications that are used to test AMD chips. The results will never be the same as if it was an intel chip being tested.

Again, Im not a CPU expert.
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[Edit 1 times, last edit by Former Member at Oct 18, 2011 4:29:32 PM]
[Oct 18, 2011 4:26:34 PM]   Link   Report threatening or abusive post: please login first  Go to top 
Former Member
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Re: Cruncher new build

I've looked at your link (http://www.cpu-world.com/news_2011/2011100701..._and_6200_processors.html)

heck* its difficult to analyse the CPU market and take a decision these days!

For the price of one good Xeon CPU, I can get 2 Opteron 4284 @ 3GHz...

Again, I al strongly leaning toward the dually setup. upgradeability seems very attracting because of cost considerations. The only problem is finding a mobo that will support 2 CPU's as well as having enough PCIE slots for up to 4 GPU's...

The EVGA Classified SR2 was meeting these "incompatible" requirements (incompatible means dual socket mobo usually for servers with capability of more than 1 GPU which is more of a consumer requirement)...

*edited to appropriate forum language - ErikaT
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[Edit 1 times, last edit by ErikaT at Oct 19, 2011 11:30:34 AM]
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Former Member
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Re: Cruncher new build

Why build a super-expensive machine when you can build two (or more) simpler machines with the same money and probably get a better end result?

For example you can build a powerful cruncher around a good i5 or i7, with no fancy stuff, just the basics (modest hard drive, good PSU, enough memory), easily for way less than $1000. With less than $3000 you can build 3 of these! Even with a good GPU on each you'll spend less than $5000 and you'll end up with a farm more powerful than the Xeon-based alternatives you suggested (3x8=24 cores with i7, plus the GPUs). cool


I understand what you are saying. I however dont want to run 12 conputers at the same time. Electricity costs will be over board and Im not sure my gf will like the idea of a geekier geekdom that what i already have ;)

Plus, I may very well use the rig for other CPU/GPU intensive tasks like converting movies and fluid dynamics and other FEA tasks. With a "farm" I imagine I could always do these tasks but how complicated?...
[Oct 18, 2011 4:45:35 PM]   Link   Report threatening or abusive post: please login first  Go to top 
Former Member
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Re: Cruncher new build

I too agree...especially with the costs of gpu's going up and up and up and that you will do better with a matched set than two different ones. Two different ones WILL work but not like a mathed pair will! You can get some very nice dual pci-e slot mb's cheap, put in a nice i5 or i7, or AMD 6 core, add two gpu's, a hard drive(160gb will work) and 8gb of ram and you are good to go CHEAP!!! You will then be up and running on one machine and then turn your resources to a 2nd then even a 3rd machine as tme and money permit.

Oh and btw if you buy a 4tb hard drive system what the heck will you back it up to?!! If you really have that much stuff you NEED then you will need at least that much space to back it up to, if not TWICE as much!! That emasn you will then have to build yourself a backup machine which is even more money! My advice...keep it simple in the beginning and expand as you think this thru. And also remember the 1st rule of buying pc stuff...whatever you buy today, tomorrow something will come out that is even faster, better and cheaper!! Put all your eggs in one basket and you will be very happy for the short term, but upgrading later on is not a likely scenario! But something you can upgrade in pieces as that is usually how the money comes in.


I agree with your first paragraph. I will probably start lean and consider future expansion. The price of the components I want today wont stay the same over the next 6 months... At that monent, if I have capability to expand, I pop a second CPU in, and add more GPU's. Who knows, the GTX 570/580 might be $275-300 each in 6 months?

Regarding the capacity, 4TB might be too much, I agree. 2TB might be enough. For the backup space, shouldnt be a problem. My server has 22 TB of storage space.
[Oct 18, 2011 4:54:54 PM]   Link   Report threatening or abusive post: please login first  Go to top 
Former Member
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Re: Cruncher new build

Put all your eggs in one basket and you will be very happy for the short term, but upgrading later on is not a likely scenario! But something you can upgrade in pieces as that is usually how the money comes in.
Good point. Get a good i7-3950 'soon-ish' and you will no doubt be able to buy a CPU with more cores in the future, and add up to 4 GPU's (if you get a good board), but if you buy a dual skt CPU system (a server), you have to put all your eggs in the one basket and upgrading can be more difficult. In fact such server systems are really, buy now, keep for 5years and replace systems.
If you buy a good system now-ish, upgrade it when it suits you, sell it on when it's still worth something and replace it when it suits you, you will continuously have good systems, and you can always buy a secondary system.


I am not sure to understand you. Are you saying that server mobo's are not normally as upgradeable as consumer boards? In other words, will I be able to upgrade 2 or 3 generations of consumer grade CPU's while I miht only be able to upgrade once for server's CPU?

If I got your point, then why are they advertising server stuff time proof with long term reliability and comaptibility? Most companies with hundreds of Xeon or Opteron based servers are not upgrading often, but that doesnt mean that these mobos are not capable of running newer CPU's? As long as the socket is the same it should work?

Am I wrong??
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Bearcat
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Re: Cruncher new build

Going with multiple systems means separate case, psu, memory, etc.. Plus your maintaining them. Going with one powerful system is easier to maintain, one case, psu, etc.. Depending on money, if you purchase a lower end xeon or amd cpu, your able to upgrade those processors to higher ghz when they drop in price. One of my rigs has dual quad core westmere processors. My upgrade path is hex cores.
As was mentioned earlier, intel will be releasing the new xeons soon. Being a new socket, should be around for awhile for upgrades. Not sure of the prices yet.
Both single systems and dually systems have there good and bad points.
For your other tasks, you would need to network them, and depending what software you will be using will depend if its capable of using network computers to share the load.
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nanoprobe
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Re: Cruncher new build

Found this in a discussion on xtreme systems website. This is what's coming. I don't know what this would cost but it is food for thought if you want to wait. biggrin



Imagine an i5-2400..times FOUR on one board..
16 SB cores,32 threads running at 3300MHz drawing under 400w..Just imagine..
My guess? 125,000-130,000PPD in WCG.


That's approximately the same PPD of 3 2600k SBs running at 4.5Ghz on about 25-30% less power (assuming 400w draw is accurate) not to mention less heat and less things to break.
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Former Member
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Re: Cruncher new build

Imagine an i5-2400..times FOUR on one board.. 16 SB cores,32 threads running at 3300MHz drawing under 400w..Just imagine.. My guess? 125,000-130,000PPD in WCG.
Imagine a GPU. The GPU can do more work under 300W and cost much less than 3 of those i7-2600K. The CPU is heading for parallelism where a GPU started out with parallelism. No GPU at WCG, however, and therefore, yes, imagine a GPU.
;
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sk..
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Re: Cruncher new build

An i5-2400 is 4/4 according to Intel, so 4 would be 16/16.
All the 22nm CPU's will be much more power efficient (about 50% more efficient than SB), not just the server cores. So imagine an i5-2400 with a 35 to 45W TDP, if you like.
Clock for clock we are likely to only see around a 5 or 6% increase in performance, and clocks are only set to modestly rise, so processor cores will only be around 10% faster. The chipset and motherboards will also be more efficient; 1.35V DDR3 for example, and faster clocks.
It's also likely that we will see 8 core and perhaps 10 core processors for desktops within a year, and with HT.
The fact is that the high end GPU's (or equivalently priced GPU's to that of a CPU) will do far more work (10 to 60 times more on a GPU implementation of HCC). So 2 single socket systems would be much less expensive than a quad skt server system, and would better facilitate GPU's; the chipsets typically support one x16, 2 x8, or 2 x8+ 1 x4 / 1 1x16. This is important because high end GPU's cannot be fully utilized at x4 (at x4 PCIE2 I experienced a 14% decrease in performance on a GTX470 and a GTX580 saw a 20% decrease). 1X is awful. The next (pending) generations of GPU (HD7000 and GTX600 series) will tax even the 2 x8 PCIE3.0 bandwidths (which are equivalent to x16 PCIE2.0 slot bandwidths). As for power efficiency on the GPU, they use more power but do much more than a CPU, and the forthcoming generations will be 28nm; more efficient and more powerful than present GPU's. Thus, two boards will be better than one.
[Oct 19, 2011 11:08:21 AM]   Link   Report threatening or abusive post: please login first  Go to top 
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Re: Cruncher new build

Has anybody found an amd equivalent to the evga sr2 mobo? This board has pretty much all I'm searching for (LOTS of ram, dual socket, 7 pci-e slots! and more) but the xeon pricetag is killing me... A six core which is the minimum amount of cores I think to be future proof to a minimum and with good frequencies (3ghz) are $1800+ which is wayyy to much for my needs.

If there is no amd boards that would support the latest opterons 8 or 12 cores at 3.0ghz then I may be leaning toward a single socket system with a hexa core phenom II or the new bulldozer octo cores at 3.6ghz with substantial OC'ing...

I just think considering the importance and value the gpu's are occupying in the big picture it's not worthwhile to spend tons of money on cpu's and that's why I'm leaning toward AMD.
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[Edit 2 times, last edit by Former Member at Oct 21, 2011 1:24:36 AM]
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