On my present two 4xE5-4650 Supermicro systems, I intend to use a combo of x16 to x16 risers [
$_12.JPG ] and Amfeltec splitters [
http://amfeltec.com/products/flexible-x4-pci-express-4-way-splitter-gpu-oriented/ ] to maximize their GPU count. I'll be using PCI Express Riser Card x8 to x16 Left Slot Adapters [
61i-nVnMqbL._SL1001_.jpg ], along with x16 to x16 risers and Amfeltec splitters for my new two 2xE5-2680 Supermicro X9DRX builds. The Supermicro X9DRX is the only motherboard that I've been able to determine for sure has reached, and has passed, the 12 GPU threshold {recognized and working in CUDA} [ see
https://devtalk.nvidia.com/default/...llation/18-gpus-in-a-single-rig-and-it-works/ and
http://www.superbiiz.com/query.php?s=Supermicro+X9DRX ]. I firmly believe that we can get this platform to work in Octane to reach the 12 GPU license limit, if not with Windows, then with either Windows Server or with Linux (which, of course, is free). ZZZ1000 used Linux [
https://devtalk.nvidia.com/default/topic/572651/issue-with-more-than-8-gpus/#4030904 ]. He first got 16 GPUs running under CUDA 5.5 in Linux and he later reached 18 GPUs running under CUDA in Linux. The only step that I can't tell whether he took was getting all of his GPUs to run under Octane. BTW - Octane has Linux support for Maya, Blender, Modo and Nuke. You can use Wine [
https://www.winehq.org/download/ ] to run other 3d applications under Linux such as Cinema 4d [
http://www.c4dcafe.com/ipb/forums/topic/82380-cinema-4d-on-linux/ ] etc. [
http://www.linux.com/learn/answers/view/1138-can-install-3d-max-and-maya-softwares-in-linux ].
Thus, the best performance for the buck for those desiring to run the maximum number of GPUs on Octane in one system currently lies in leveraging low cost Supermicros. They're more likely to attain, for the least cost, the current Octane license ceiling of 12 GPUs. The Supermicro X9DRX line is cheap (in terms of price), particularly when compared to the Trenton systems. One can purchase an 11 slotted Supermicro X9DRX in two versions, one for $460 [
http://www.superbiiz.com/detail.php?name=MB-X9DRXFB ]
*/ and the other for $489 [
http://www.superbiiz.com/detail.php?name=MB-X9DRXF ]
**/ . One can purchase a Supermicro upright chassis that houses either motherboard for $967 [
http://www.superbiiz.com/detail.php?name=CA-747TQ6B ]
***/ That chassis also includes the ability to use the GPUs, storage and memory of your choice (so long as it meets LGA 2011 standards). Purchasing the more expensive motherboard and chassis separately costs about $1456, or the least expensive motherboard and the same chassis for $1,427 ($967 + $460 = $1,427). But if one doesn't want to bother with installing the motherboard onto the chassis, one can purchase a motherboard/chassis combo for $1,552 [
http://www.superbiiz.com/detail.php?name=SY-747RTXF ]
****/; this combo comes with the less expensive motherboard. You can also buy a rackmount chassis combo that has the least expensive motherboard for $1,346.99 [
http://www.superbiiz.com/detail.php?name=SY-637RTXF ]. It has 980W Redundant Power Supplies. If you’re going to be using lots of externally powered splitters this would likely work, but if you’re going to be using only or mainly risers like the one shown in this pic,
http://render.otoy.com/forum/download/file.php?id=43956&mode=view , then connecting up to eleven GPUs to the eleven slots may be too much, since each GPU may draw up to 75 watts from its connected PCIe slot: 75W x 11 = 825W, not including the power requirements of the CPUs, chip set, fans, ram, etc.
I'll be housing my two Supermicro X9DRX builds in my two Lian Li PC - D8000 chassis [
http://www.lian-li.com/en/dt_portfolio/pc-d8000/ ]. My first Supermicro X9DRX build will consist of Titan Hydros: 6xTitanZs + 2xTitanBlacks + 4xTitanXs) and, for next year I'll add as many Pascals Hydros as I can get running [
http://blogs.nvidia.com/blog/2015/03/17/pascal/ & [
http://www.pcworld.com/article/2898...10x-the-performance-of-titan-x-8-way-sli.html ] to this system or to my second build; and my second Supermicro X9DRX build will also likely consists of 18+ GPUs, consisting of any overflow GPUs from the first build, plus more Pascals and successors {it'll be a work-in-progress into the future}. In addition to rendering using Octane, I also be rendering on these systems with TheaRender {no GPU limit}, FurryBall {no GPU limit} and Redshift3d {effectively no GPU limit - one can run multiple instances simultaneously}, as well as other applications that are supported by GPUs. These Supermicro GPU consolidations/mods & builds (as well as similar consolidations/mods to my Tyan, MacPros, and my many Gigabyte systems) will allow me to significantly reduce my chassis count and, thus, reduce my software licensing costs (they're based per system).
Differences Bolded
*/
Specifications
Mfr Part Number: X9DRX+-F-B
CPU: Dual LGA2011
Support Intel Xeon E5-2600 Processors
Cache up to 20MB
QPI up to 8 GT/s
Support up to 135W TDP
Chipset: Intel C602
Memory: 16x 240pin DDR3-1600/1333/1066/800 DIMM Slots, Supports up to 512GB ECC/REG Memory or up to 128GB ECC/Non-ECC Unbuffered Memory
Slots: 10x PCI-Express 3.0 x8 Slots, 1x PCI-Express 2.0 x8 Slot (runs at x4)
SATA: 2x SATA3 Ports (via AHCI), 8x SATA2 Ports (four via AHCI, four via SCU); Support RAID 0, 1, 5, 10 [see
http://www.tomsitpro.com/articles/xeon-e5-2687w-benchmark-review-cores,2-288-3.html - essentially, it adds SAS functionality ]
Video: Matrox G200eW Graphics Controller
LAN: Intel i350 Dual Port Gigabit Ethernet Controller; 1x Realtek RTL8201N PHY (Dedicated IPMI)
Ports: 10x USB 2.0 Ports (4 rear, 4 via headers, 2 Type A), 1x VGA Port, 2x Serial Ports (1 rear, 1 via header), 2x RJ45 LAN Ports, 1x RJ45 Dedicated IPMI LAN Port
Form Factor: Proprietary, 15.2 x 13.2 inch / 38.6 x 33.5 cm
RoHS Compliant
**/
Specifications
Mfr Part Number: X9DRX+-F-O
CPU: Dual LGA2011
Supports Intel Xeon E5-2600 Processors
Cache up to 20MB
QPI up to 8 GT/s
Supports up to 135W TDP
Chipset: Intel C602
Memory: 16x 240pin DDR3-1600/1333/1066/800 DIMM Sockets, Supports up to 512GB ECC/REG Memory or up to 128GB ECC/Non-ECC, Unbuffered Memory
Slots: 10x PCI-Express 3.0 x8 Slots, 1x PCI-Express 2.0 x8 Slot (runs at x4)
SATA: 2x SATA3 Ports, 8x SATA2 Ports; Support RAID 0, 1, 5, 10
Video: Matrox G200eW Graphics Controller
LAN: Intel i350 Dual Port Gigabit Ethernet Controller; 1x Realtek RTL8201N PHY (dedicated IPMI)
Ports: 10x USB 2.0 Ports (4 rear, 4 via headers, 2 Type A), 1x VGA Port, 2x Serial Ports (1 rear, 1 via header), 2x RJ45 LAN Ports, 1x RJ45 Dedicated IPMI LAN Port
Form Factor: Proprietary, 15.2 x 13.2 inch / 38.6 x 33.5 cm
RoHS Compliant
***/
Specifications
Mfr Part Number: CSE-747TQ-R1620B
Case Type: 4U Rackmount / Tower
Color: Dark Gray
M/B Type: EATX, ATX; Max Motherboard Size - 15.2 x 13.2 inch
Processor Support: Dual, Single Intel/AMD Processors
Drive Bays: 8x 3.5" Hot-swap SAS/SATA Drive Bays, 3x 5.25" Peripheral Drive Bays in Sorage Module (Rotates 90° for Rackmount), 1x 3.5" Fixed Peripheral Drive Bay
Expansion Slots: Capable of housing 11x Full-Height, Full-Length Expansion Cards
Backplane: SAS/SATA Hard Drive Backplane w/ SES2
Cooling System: 4x (92x38mm) 4-pin PWM Middle Cooling Fans, 2x (80x38mm) 4-pin PWM Rear Exhaust Fans
Front Panel:
Buttons: LED Power On/Off, System Reset
LEDs: Power Status, Hard Drive Activity, 2x Network Activity, System Overheat & Power Fail
Ports: 2x USB 2.0 Ports
Power Supply: 1620W 80 PLUS Platinum Certified High-efficiency Redundant Power Supply w/ PMBus
Dimensions (WxDxH): 18.2 x 26.5 x 7.0 inch / 462.0 x 673.0 x 178.0 mm
Gross Weight: 62.0 lbs / 28.1 kg
****/
Specifications
Mfr Part Number: SYS-7047R-TXRF
Motherboard: Super X9DRX+-F
Processor: Dual LGA2011
Supports Intel Xeon E5-2600 Processors
Cache up to 20MB
QPI up to 8 GT/s
Chipset: Intel C602
Memory: 16x 240pin DDR3-1600/1333/1066/800 DIMM Slots, Supports up to 512GB ECC/REG Memory or up to 128GB ECC/Unbuffered Memory
Slots: 10x PCI-Express 3.0 x8 Slots; 1x PCI-Express 2.0 x8 Slot (runs at x4)
SATA: 2x SATA3 Ports, 8x SATA2 Ports, Supports RAID 0, 1, 5, 10
Video: Matrox G200eW Graphics
LAN: Intel i350 Dual Port Gigabit Ethernet Controller; 1x Realtek RTL8201N PHY (dedicated IPMI)
Drive Bays: 8x Hot-swap 3.5" Drive Trays; 3x 5.25" Peripheral Drive Trays
Backplane: SAS/SATA Hard Drive Backplane w/AMI MG9072
Ports: 10x USB 2.0 Ports (4 rear, 4 via header, 2 Type A), 2x Serial Ports (1 rear, 1 via header), 1x VGA Port, 2x RJ45 LAN Ports, 1x RJ45 Dedicated IPMI LAN Port
Form Factor: 4U Rackmountable / Tower
Power Supply: 1280W 80 Plus Platinum Certified Redundant High-efficiency Digital Power Supply w/ PMBus 1.2
System Cooling: 4x 92x38mm 4-pin PWM middle fans, 2x 80x38mm 4-pin PWM rear exhaust fans
Front Panel:
Buttons: Power On/Off, System Reset
LEDs: Power, Hard Drive Activity, 2x Network Activity, System Overheat, Power Fail
Color: Black
Dimensions (WxDxH): 7.0 x 26.5 x 17.2 inch / 178.0 x 673.0 x 437.0 mm
Weight: 56.2 lbs / 25.5 kg
RoHS Compliant