V8 Optimized App

[RottenMutt]

The dual quad Macs are kicking my a$$.   How about a V8 Optimized app?

The best I'm able to due is about 13th top computers.  Even though I'm dual 5320 OC to 2.625GHz the extra fsb (375MHz) puts my Boinc benchmarks higher then 5365 Macs.

Please Help ME

[/b]

edit:
I have a SuperMicro X7da3+ running two OC'd 5320 at 2.625GHz (375MHz FSB), 4 sticks of Crucial 2GB PC2-5300 FB-DDR2 Memory in every other slot.

this link is my computer, V8 5320 @2.625GHZ, RAC4500: http://setiathome.berkeley.edu/show_host_detail.php?hostid=2921877
this link is adream's V8 5365 @3.0GHz, RAC7000: http://setiathome.berkeley.edu/show_host_detail.php?hostid=3284384

Maybe the MAC's are OC'ing, if so they should be 1.3 times faster then me, but still.
I've originally started with a SM X7da8 and mismatched ram, replaced it all to find out it didn't make any difference.   Now I have two machines running, one with 5120's and another with 5320's all with Crucial FB-DDR2.

[RottenMutt]

I've just loaded cruch3r's app

http://calbe.dw70.de/seti.html

[michael37]

First of all, impressive job with overclocking.  Wow.

Second, you are using the best application for your computer -- the SSSE3 64-bit app.  I couldn't figure out if you are running 2.4 or 2.4V, but the latter is a tad faster.  Upgrade if necessary.

I have no experience with V8 (dual-quad cores), but I have quite a bit experience with dual dual-cores 5120 and 5160s.  I think they are simply slower than their Q6000 counterparts.  I don't know why, but it has been reported on the main boards.  Maybe an inferior chipset and memory controller?  Though I see that your Q6700 is slower.

Lastly, I looked at completion times for your workunits on the E5320 and they are not impressive.  How are you cooling that monster?  It got to produce insane amount of heat overclocked.  Make sure it doesn't throttle down your CPUs.  Also, did you take care of the memory speed? 

[RottenMutt]

 I've water cooled the 5320s, they run around 36-45 degrees C, and the memory about 60-65C.  I seem to be limited by either the graphics card, the pci-e bus/the NB not running locked as i can hit 390 but not for long with BSD which reference the graphics.
I just DL 2.4V which i believe to be curnch3rs app.
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 optimized app, i have no clue how that could or would be accomplished...

I've been running around a 4200rac on the OC q6700's (4x3.35GHz), compared to 4900rac on the 5120's (8x2.6GHz) using 2.4 off the main page.

[michael37]

Mac application is not "V8" optimized.  It's just SSSE3 + MacOS optimized -- they still run 8 copies of the application, same as Windows or Linux users.

Graphics card has nothing to do with the Seti performance.  Neither does PCI-E bus.  Seti app performs no PCI-E IO.  Boinc app does a little -- writing files and doing network traffic, but that's really minor and doesn't define the performance.  What's your memory speed?  What's your memory rating?  I am beginning to suspect your RAM.

[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: [Select]

CPU time 9918.890625

My 5150:

Code: [Select]

CPU time 6720.125

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]

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...

There's nothing magical about the Mac V8 app - it's just conventional that the next release after version 7, is version 8....

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]

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: [Select]

CPU time 9918.890625
My 5150:

Code: [Select]

CPU time 6720.125
...

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

[RottenMutt]

the 5320 is overclocked to 1520 fsb

[michael37]

the 5320 is overclocked to 1520 fsb

Have you gotten your memory fixed?  If yes, did the times get back to something more reasonable?

If not, would you try dropping the overclocking rates down a bit?  I wonder if there is some major inefficiency with the memory controller due to imbalance of FSB vs DDR2 memory speeds.  Maybe it's not as much overclocking FSB rather than synchronization between FSB and RAM.

[RottenMutt]

I’ve rma’d the memory back to newegg.com and should get new memory today.  I will report back later.

[RottenMutt]

Sandra hardware mainboard info is reporting the memory is 64-bit width???  This is the new memory... 4 sticks of 2GB PC2-5300 FB-DDR2 (Crucial).



SiSoftware Sandra

Mainboard
Manufacturer : Supermicro
Multi-Processor (MP) Support : 2 Processor(s)
MPS Version : 1.40
Model : X7DA8
Version : PCB Version
Serial Number : 0123456789

System Memory Controller
Location : Mainboard
Error Correction Capability : None
Number of Memory Slots : 8
Maximum Installable Memory : 64GB
Bank1 - DIMM1A : Micron 18HF25672FD667E1D4 E30447CC DIMM Synchronous DDR2-SDRAM 2GB/72 @ 667Mt/s
Bank1 - DIMM1B : Empty
Bank2 - DIMM2A : Micron 18HF25672FD667E1D4 E30447D3 DIMM Synchronous DDR2-SDRAM 2GB/72 @ 667Mt/s
Bank2 - DIMM2B : Empty
Bank3 - DIMM3A : Micron 18HF25672FD667E1D4 D21C5C03 DIMM Synchronous DDR2-SDRAM 2GB/72 @ 667Mt/s
Bank3 - DIMM3B : Empty
Bank4 - DIMM4A : Micron 18HF25672FD667E1D4 E304481A DIMM Synchronous DDR2-SDRAM 2GB/72 @ 667Mt/s
Bank4 - DIMM4B : Empty

Chipset 1
Model : Super Micro Computer Inc 5000X Chipset Memory Controller Hub
Revision : D2
Bus : Intel AGTL+
Front Side Bus Speed : 4x 373MHz (1492MHz data rate)
Maximum FSB Speed : 4x 266MHz (1064MHz data rate)
Width : 64-bit
SMP - MP Capability : Yes
I/O Queue Depth : 12 request(s)
Maximum Bus Bandwidth : 11936MB/s (estimated)

Logical/Chipset 1 Memory Banks
Bank 0 : 2GB DDR2-SDRAM FB-DIMM 5.0-5-5-15 (tCL-tRCD-tRP-tRAS) CR4
Bank 0 Temperature : 59.0°C / 138.2°F
Bank 1 : 2GB DDR2-SDRAM FB-DIMM 5.0-5-5-15 (tCL-tRCD-tRP-tRAS) CR4
Bank 1 Temperature : 58.5°C / 137.3°F
Bank 2 : 2GB DDR2-SDRAM FB-DIMM 5.0-5-5-15 (tCL-tRCD-tRP-tRAS) CR4
Bank 2 Temperature : 58.0°C / 136.4°F
Bank 3 : 2GB DDR2-SDRAM FB-DIMM 5.0-5-5-15 (tCL-tRCD-tRP-tRAS) CR4
Bank 3 Temperature : 55.0°C / 131.0°F
Supported Memory Types : DDR2-SDRAM FB-DIMM
Channels : 4
Memory Bus Speed : 2x 373MHz (746MHz data rate)
Maximum Memory Speed : 2x 400MHz (800MHz data rate)
Multiplier : 1/1x
Width : 64-bit
Memory Controller in Processor : No
Refresh Rate : 7.80µs
Power Save Mode : No
Fixed Hole Present : No
Maximum Memory Bus Bandwidth : 23872MB/s (estimated)

[Jason G]

Yes,
   DDR, DDR2 & DDR3 are all 64 bit wide memory data path AFAIK