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Intel Core i7-3930K vs Xeon E5-2630 For Long-duration Financial Calculations - Page 7

post #61 of 100
Quote:
Originally Posted by dima777 View Post

I wonder if you have tried running your i73930k for long periods of time..like 10 hours or 24 hours at the maximum load....I wonder how it behaved? lets say for 8-10 hours in a row....at 95% (no over-clocking) - did you see any hints of instability in its performance?
Thanks!


How about six months straight? my lightly OC'd Q6700 had 6 months of 24/7 folding uptime before a power outage took it down. My i7 is a bit fussier, but it's X58, so it hates being truly stable (i can run linpack on it for 10 days straight without error, then it'll randomly reboot after sitting idle for 2 days).

if you want something reliably stable, you have to pay for the xeon. Or just don't use the X58 chipset.
 
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post #62 of 100
Quote:
Originally Posted by dima777 View Post

thank you for your suggestion...I have looked into these and am still very curious...I am just not sure how these servers work - do I upload all of my software there? - do I need to upload my proprietory model files there???? I do nto trust any remote server to handle my model files no matter what kind of the guarantee they provide...can oyu please help me understand how an instance could be used to auotmated recalculating large excel files 1000 times in sequence? well actually many more times...

it would function like any windows install. you would upload the files you needed, but for financial data it would seem like it would need to be constantly updated. Amazon's connection is very fast and would make this easy. You can trust amazon. They will keep your data private unless ordered to release data by law enforcement. This is not some little web hosting business after all -- it's amazon. Many companies use and trust their service for critical proprietary data and analytic purposes.
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post #63 of 100
Thread Starter 
thank you for your generous attention!)

I need to introduce one more element into the equation...sorry to have left it out before....I need to spend quite some time outside of the Europe and USA - in eth Western Europe - where the server grade parts take a week to arrive - a week is intolerable time to wait for any part in case the setup fails....I will be providing the analysis each day and it needs to be updated on a daily basis...new signals can orccur any time...

for a server-based example, I have been recommended the followign setup

CPU: Xeon E3 1275 V2
MOBO ASUS P8C WS
Kingstong RAM 16GB DDR3 1600 ECC Unbuff. (4x4gb)

the cpu and motehrboard are more or less easily available here but the RAM 16GB DDR3 1600 ECC Unbuff which is only accepted by this setup needs to be ordered and will take from 7 to 10 days to arrive.....I have not foudn otehr unuffered ECC on teh market now...

I mean if any part of this seup fails - Especially memory - I will need to replace it...but only within one weeks time....


if i go with the i7 3930k based setup - I shoudl be able to get any kind of the memory in no time at all from teh local PC shops...The XEON+ECC+SERVER mobo looks very reliable but if anythign beraks down I stand the chance of replacing the broken part much faster with the 3930k based setup....considering the power of 3930k I mitgh be able to crunch all data in a matter of 5 o6 hours so no need for 24/7 operation for now....

I will be doign maintenance myself at first - do you think a server-based setup mitghbe harder to maintain than a desctop based setup?

thanks!)
post #64 of 100
Quote:
Originally Posted by dima777 View Post

thank you for your generous attention!)
I need to introduce one more element into the equation...sorry to have left it out before....I need to spend quite some time outside of the Europe and USA - in eth Western Europe - where the server grade parts take a week to arrive - a week is intolerable time to wait for any part in case the setup fails....I will be providing the analysis each day and it needs to be updated on a daily basis...new signals can orccur any time...
for a server-based example, I have been recommended the followign setup
CPU: Xeon E3 1275 V2
MOBO ASUS P8C WS
Kingstong RAM 16GB DDR3 1600 ECC Unbuff. (4x4gb)
the cpu and motehrboard are more or less easily available here but the RAM 16GB DDR3 1600 ECC Unbuff which is only accepted by this setup needs to be ordered and will take from 7 to 10 days to arrive.....I have not foudn otehr unuffered ECC on teh market now...
I mean if any part of this seup fails - Especially memory - I will need to replace it...but only within one weeks time....
if i go with the i7 3930k based setup - I shoudl be able to get any kind of the memory in no time at all from teh local PC shops...The XEON+ECC+SERVER mobo looks very reliable but if anythign beraks down I stand the chance of replacing the broken part much faster with the 3930k based setup....considering the power of 3930k I mitgh be able to crunch all data in a matter of 5 o6 hours so no need for 24/7 operation for now....
I will be doign maintenance myself at first - do you think a server-based setup mitghbe harder to maintain than a desctop based setup?
thanks!)


Don't forget it is unlikely that all your RAM will fail at once (unless a bad power issue). If one DIMM fails, pull it and continue to run.


Again, I keep asking..... what's the impact due to a bit flip?


Again,
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post #65 of 100
Thread Starter 
thanks - yes that makes sense.....I am fluctuating between these two options - narrowing in closer at the final solution....

can you clarify what you mean by " bit flip"?
thanks!
post #66 of 100
Quote:
Originally Posted by dima777 View Post

thank you for your generous attention!)
I need to introduce one more element into the equation...sorry to have left it out before....I need to spend quite some time outside of the Europe and USA - in eth Western Europe - where the server grade parts take a week to arrive - a week is intolerable time to wait for any part in case the setup fails....I will be providing the analysis each day and it needs to be updated on a daily basis...new signals can orccur any time...
for a server-based example, I have been recommended the followign setup
CPU: Xeon E3 1275 V2
MOBO ASUS P8C WS
Kingstong RAM 16GB DDR3 1600 ECC Unbuff. (4x4gb)
the cpu and motehrboard are more or less easily available here but the RAM 16GB DDR3 1600 ECC Unbuff which is only accepted by this setup needs to be ordered and will take from 7 to 10 days to arrive.....I have not foudn otehr unuffered ECC on teh market now...
I mean if any part of this seup fails - Especially memory - I will need to replace it...but only within one weeks time....
if i go with the i7 3930k based setup - I shoudl be able to get any kind of the memory in no time at all from teh local PC shops...The XEON+ECC+SERVER mobo looks very reliable but if anythign beraks down I stand the chance of replacing the broken part much faster with the 3930k based setup....considering the power of 3930k I mitgh be able to crunch all data in a matter of 5 o6 hours so no need for 24/7 operation for now....
I will be doign maintenance myself at first - do you think a server-based setup mitghbe harder to maintain than a desctop based setup?
thanks!)

This proves my point that a virtual server is the best option for you. If you are really that worried you need to consider this. You can be up and running within a day with this method... no waiting for hardware or needing to stop calculations to fix it. If you learn how to maintain a server it will be as easy or easier than hardware. With windows virtual servers I think you can just desktop connect and use it like any other remote desktop.

I also forgot to mention the cost of networking. You will pay more than $100 per month for something that is fast and business oriented, but amazon's is faster and included in the server price.
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post #67 of 100
Quote:
Originally Posted by dima777 View Post

thanks - yes that makes sense.....I am fluctuating between these two options - narrowing in closer at the final solution....
can you clarify what you mean by " bit flip"?
thanks!


What do you need ECC for again? wink.gif


BTW, you better be using legal copies of all the software....

You'll be in bigger trouble than hardware failures if someone requests an audit...
Edited by DuckieHo - 11/29/12 at 11:57am
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post #68 of 100
Thread Starter 
Quote:
Originally Posted by dizzy4 View Post

This proves my point that a virtual server is the best option for you. If you are really that worried you need to consider this. You can be up and running within a day with this method... no waiting for hardware or needing to stop calculations to fix it. If you learn how to maintain a server it will be as easy or easier than hardware. With windows virtual servers I think you can just desktop connect and use it like any other remote desktop.
I also forgot to mention the cost of networking. You will pay more than $100 per month for something that is fast and business oriented, but amazon's is faster and included in the server price.


Well one of my would be competitors is using amazon but they do it on a very large scale (had a a large failure recently due to amazon server problems) You mean all the original excel model files can stay on my own hard-drive and the calculation will be sent to the calculating instances? if yes - I am not sure my broadband will allows that as my excel files are very large - close to 500mbs on average...
post #69 of 100
Thread Starter 
Quote:
Originally Posted by DuckieHo View Post

What do you need ECC for again? wink.gif
BTW, you better be using legal copies of all the software....
You'll be in bigger trouble than hardware failures if someone requests an audit...

yes I will consider that...ECC is needed to make sure no random error creeps into analysis but if I use the 3930k method -> I might devise a special checking after=processor in excel that will make sure there are no outliers in the analysis that might be due to memory errors of any kind - if I use non-ECC memory...
post #70 of 100
FYI, you must have a xeon to use ECC now.
 
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