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Author Topic: Running Photoscan on a VM - another NVIDIA driver rollback  (Read 3184 times)

bigben

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Running Photoscan on a VM - another NVIDIA driver rollback
« on: August 25, 2014, 08:49:50 AM »
As mentioned in the benchmarking thread I'm testing PS on a VM provided by our IT guys. The first test with 8GPUs and 8/16 CPUs threw up some GPU errors e.g.
Code: [Select]
Reconstructing depth...
[CPU] estimating 1240x756x160 disparity using 1240x756x8u tiles, offset -138
[GPU] estimating 1399x873x288 disparity using 1399x873x8u tiles, offset -209
ocl_engine.cpp line 320: clWaitForEvents failed, error -9999
GPU processing failed, switching to CPU mode

(Full log attached.)  Can anyone suggest what might be causing this?  The end result is successful, there's a performance result for the device and it's faster than with GPU disabled and all CPU cores active. Just a timing alert?

Also, which bits of the log file are used for the benchmarking?  I know it's not going to be the fastest thing around but it would be useful for us to know where this fits in with other hardware options for comparison.

[edit]Asking our IT guys for more details on the system specs as I'm guessing there may be some driver settings to tweak(?)  At the moment our Dell T5600 (K4000, 3Gb) is slightly ahead overall due to better GPU performance.
« Last Edit: August 26, 2014, 08:27:17 AM by bigben »

ozbigben

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Re: Running Photoscan on a VM
« Reply #1 on: August 26, 2014, 08:22:09 AM »
As with the other GPU-related error in posts here it seems to be the graphics driver.  NVidia graphics driver was 340.52 (or something like that). Looked at the local machine that didn't have any problems and it was running 331.65 so I did a clean install of that version on the VM

v340
Code: [Select]
finished depth reconstruction in 318.432 seconds
Device 1 performance: 105.843 million samples/sec (CPU)
Device 2 performance: 106.71 million samples/sec (GRID K2)
Total performance: 212.553 million samples/sec

v331
Code: [Select]
finished depth reconstruction in 148.631 seconds
Device 1 performance: 140.158 million samples/sec (CPU)
Device 2 performance: 434.571 million samples/sec (GRID K2)
Total performance: 574.73 million samples/sec

[edit] dammit... thought I got rid of that doppelganger login on one of my PCs... ;)  and looked up the correct version it was running previously
« Last Edit: August 28, 2014, 12:40:24 AM by ozbigben »

bigben

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Re: Running Photoscan on a VM - another NVIDIA driver rollback
« Reply #2 on: August 26, 2014, 08:33:37 AM »
Here's the log file for reference