teslaM40tester

Just a short reply, since I had a few Minutes to test somenthing out: Managed to get one M40 running on a "miningriser" - which is a 1xPCIE -> 4 x 16x Slot Adapter with a little splitter on it. Seems the Splitter reduces the slots to PCIE2 Gen, so basically, the M40 ran at 1 x GEN2 PCIE So that confirms that it can run on older Gens and not full lane supported Slots - which is a very good thing. Of course every workload that is dependend on a high bandwith on the PCIE slot might suffer that way - heavy calculations on the card where only a small result from the calculaton is delieverd over the bus are no problem (like mining, FAH, boinc, 3D, rendering, etc...) So just for fun, I did some tests with two M40 in these slots: Blender rendering is fun, alsmost double the speed of one card, even on low pcie speeds octane bench: 2 x M40 -> faster than one Tesla P100, 1080TI etc.... Almopst in the ballpark of small RTX cards - not too bad... Since I know now that older and smaller PCIE slots are not problem, I will take a look at how I can easily but all 6 of them to use, maybe for a Blender crunchy box...

Thank you, that helps a lot. So I will test the Teslas on a slot with less than 16x and see if it works. If it does, I will investigate if the slower speed on the slot makes a difference... For Calculations, I might even revert to some SLI Bridge, which probably will even out the lower bandwith of the port. This way I might get along with a "normal Board"

Hello to everyone, I found this forum while searching for info about the M40. A short introduction to me: have been fiddling with computers for decades now, first machine was a VIC 20, in my youth I modded my ATARI STs to 16Mhz, I know how to solder or read out an EEPROM, so I´d guess I am on an enthusiast level I got my hands on 6 TESLA M40 with 12GB. Managed to get it running in windows, did some CUDA tests, in WDMM Mode some DX12 calculations, OpenCL, Vulkan and right now I am working on rerouting the Output through an RX550 in order to use it for casual gaming, maybe for the kids.... I was hoping you guys could help me with a certain issue: I´d like to get into training my own models (ESRGAN would be my starting point, seems well documented) - therefore I want to put as many of the M40 in one machine as possible. So far I only found bigger Threadripper boards which offer 4 or more full 16x PCIE Slots and have enough PCIE Lanes to fully support the M40s... But: These are quite expensive - and actually, I don´t think I need full bandwith. I´d probaly get along with 4x speed. But I´ve read several mentionings that the TESLAS only work on 16x Slots. Some older XEON Boards seem to have seperate PCIE Splitters on Board, enabling real 4 x PCIe16x Slots. Some people report flashing a QUadro Bios on the Tesla, opening up the possibility to let them run on 1x, 4x, 8x slots... How coul I manage to get at least 4 M40s running on a motherboard (which I have to buy then) without spending too much on board and CPU? I even have a small Riser-Thingy for mining (which I don´t really do, just out of interest, I fiddled with it) which has 4 PCIE16X slots, but only at 1x Speed .... Would be convinient, if this could work. Any thoughts? Thanx