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SR-2 with 96GB ECC totally stable until I f@h in a VM

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wideboy
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2011/12/17 02:17:21 (permalink)
I've just built my new system SR-2 with 2 x5690 and 96gb ECC 4x15k 76gb SAS in RAID-0 and 3x2TB RAID-5 all tucked nicely inside a Fulmo GT. I didn't need to make any changes to the bios to get the 96gb to show up and I've never experienced the missing memory issue, even before I updated to the latest bios.
 
Anyway I've started playing with RAMDisk's and I've made a script to create a 15GB RAMdisk using ImDisk, then robocopy my VirtualBox VM (ubuntu 10.10) into the RAMDisk and then fire up the VM and it starts folding on all 24 Threads - system shows 93-96% usage and its fine for 2 hours, while I continue to browse the web, then out of the blue the whole system will just freeze.
 
I've tried increasing the memory vcore and ioh by 10% but it didn't help, so I was looking for some help/experience with a possible cause for my issue; the RAMDisk? VirtualBox? (VMware Workstation allows only 8 Cores) hyperthreading turned on? other bios memory settings?
 
I know it's a bit of a needle in a haystack but any advice would be appreciated.
 
UPDATE: not RAMDisk, mounted VM from HDD and still crashed.
post edited by wideboy - 2011/12/17 03:27:21
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    usmc0656
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    Re:SR-2 with 96GB ECC totally stable until I f@h in a VM 2011/12/28 12:16:56 (permalink)
    I don't think it's going to be a hardware problem you're facing bud, but I could be wrong.  It may be an issue with what you're trying to do.  Even with VMWare ESX we have some issues running multicore virtuals.  They all have to be available at the same time, or something like that. 
     
    Seems like you're dedicating ALL the CPU power to your VM, remember that the host O/S (containing the hypervisor) does need some computational power to run that virtual machine and your host O/S.  You may want to limit how many threads you allow it to run or else there won't be any to run the VM itself.  Just my two cents.

    Never forget our POW/MIA/KIA. Semper Fi.  
         System Specs:
      Mobo: EVGA Classified SR-2
      Processors: Dual Xeons x5650
      Video Cards: Dual EVGA GTX 580 3GB in SLI 
      Memory: 6 x 2000 MHz Corsair Dominators CL9 
      Hard Drives: Dual OCZ Vertex 3 120GB Drives in Raid 0
      Power Supply: Cooler Master Silent Pro 1200 Watt Power Supply
      Cooling: (CPUs) Cooler Master Hype 212 EVO (Waiting on nateman_doo's blocks for watercooling) 
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    wideboy
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    Re:SR-2 with 96GB ECC totally stable until I f@h in a VM 2011/12/29 05:47:08 (permalink)
    Thanks for your input, I haven't tried f@h inside a VM since my post but as you mentioned it might be asking a bit much to fully load the VM with all cores and still surf - my i72600k@4.8 would f@h and stay stable but then again that only had 4/8 threads for the VM.
     
    I'll come back to my VM experiments soon, I'm currently automating my most used apps to self create and then run from within RAMDrives, I've got Steam and Origin working nicely so far, Adobe CS5 is next where the benefits might actually be a little more useful :-)
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    usmc0656
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    Re:SR-2 with 96GB ECC totally stable until I f@h in a VM 2011/12/31 05:55:52 (permalink)
    Just out of curiosity what are you doing with this beast of a machine?  I see you're virtualizing a bunch of apps but are you rendering or something?  I'm trying to figure out what the heck to do with my beast myself.  I have the toy, now I want to play with it.

    Never forget our POW/MIA/KIA. Semper Fi.  
         System Specs:
      Mobo: EVGA Classified SR-2
      Processors: Dual Xeons x5650
      Video Cards: Dual EVGA GTX 580 3GB in SLI 
      Memory: 6 x 2000 MHz Corsair Dominators CL9 
      Hard Drives: Dual OCZ Vertex 3 120GB Drives in Raid 0
      Power Supply: Cooler Master Silent Pro 1200 Watt Power Supply
      Cooling: (CPUs) Cooler Master Hype 212 EVO (Waiting on nateman_doo's blocks for watercooling) 
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    coolamasta1
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    Re:SR-2 with 96GB ECC totally stable until I f@h in a VM 2012/01/01 06:56:05 (permalink)
    Interesting issues you are having there, I'm having similar issues! My SR2 has a pair or 5650's @ 4.2ghz watercooled and will happily run native Win 7 x64 or Ubuntu 10.10 x64 folding 24/7 but recently I have installed ESXi 5.0 on there and created a 24 thread VM with 4gb ram to fold bigbeta's on and even though it works and ppd is good it will crash the ESXi host after 10 hours or so of folding!

    I've tried stressing it for hours under LinX on win 7 (not vm) and its perfect so confused now...

    Was wondering if it's anything to do with NUMA or T or C states??

    ~~ Watercooled EVGA SR-2, Xeon X5650's, OCZ 12GB Ram, EVGA Sli'd 1GB 460's EE ~~
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