Forum > Windows
V8 Optimized App
michael37:
OK let's compare two workunits, one by my 5150 and one by your E5320. Something is not OK with your machine dropping your performance by 50%! And we are using the same app.
Workunits are nearly identical: 0.4AR, 54.1 credit.
Your E5320:
--- Code: ---CPU time 9918.890625
--- End code ---
My 5150:
--- Code: ---CPU time 6720.125
--- End code ---
Those MACs have much more similar timing per workunit to my computer than to yours.
Your workunit: http://setiathome.berkeley.edu//result.php?resultid=614751499
My workunit: http://setiathome.berkeley.edu/result.php?resultid=620964727
Mac workunit: http://setiathome.berkeley.edu/result.php?resultid=588774781
Richard Haselgrove:
--- Quote from: RottenMutt on 27 Sep 2007, 01:32:41 am ---
The MACs are built on the same 5000x chipset so i don't think its a hardware limitation. But I do here them talk about a V8 optimised app, i have no clue how that could or would be accomplished...
--- End quote ---
There's nothing magical about the Mac V8 app - it's just conventional that the next release after version 7, is version 8.... :o
If you're just starting to get to grips with the E5320 / x5000 architecture, you might like to review this thread from almost a year ago: RAM it (almost certainly) is.
http://setiathome.berkeley.edu/forum_thread.php?id=36040&nowrap=true#486827
RottenMutt:
Thanks for the help so far. I agree my work unit time see way off and I don’t know why.
Motherboard is SuperMicro X7DA8, Memory is four 1GB Crucial FB 666MHz Dimms populated in quad channel mode. My memory temps are around 60 to 65 degrees C.
Pictures of my system on 2CPU.com
The discussion on graphics and pci-e bus has to do with system stability while over-clocking and nothing to do with seti.
edit: I've since switched out the mobo to a SM x7da3+ and tried new ram, 4 sticks of crucial pc2-5300 (333MHz) FB-DDR2, to find it had no effect. I did determine the X7DA8 has the correct revision chipset to run Quad Cores despite SM telling me mine doesn't (they said the serial number of my board doesn't have the correct revision NB).
RottenMutt:
Update:
I’ve started to see parity error in the BIOs!
When I ordered the MB, Processors (5120’s) and Memory (Crucial CT12872AF667) from Newegg (11/1/2006) they sent me one Micron made Dimm and 3 Samsung re-branded Dimms. Since I’ve upgraded to quad cores maybe the the mismatch is now noticeable. Good news Newegg has agreed to RMA the memory. :) Hopefully this it the problem, what do you think?
When I got the memory I thought crap, but then i thought about how the memory is separated from the NB by the ABM chip why should it matter. At least they sent me matched Xeons which isn't always the case.
Urs Echternacht:
--- Quote from: michael37 on 27 Sep 2007, 01:56:38 am ---OK let's compare two workunits, one by my 5150 and one by your E5320. Something is not OK with your machine dropping your performance by 50%! And we are using the same app.
Workunits are nearly identical: 0.4AR, 54.1 credit.
Your E5320:
--- Code: ---CPU time 9918.890625
--- End code ---
My 5150:
--- Code: ---CPU time 6720.125
--- End code ---
...
--- End quote ---
That difference looks heavy. Analysing...
E5320 has only FSB 1066, while E5150 has FSB 1333. Maybe that is the limiting factor here, because the RAM's bandwidth is not fully used (errors are an other factor).
Besides, the L5335 would use less power and has also the faster FSB1333. (But it's more expensive.)
Urs
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version