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Author Topic: Use of components (processor, RAM, GPU)  (Read 5996 times)

Vct

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Use of components (processor, RAM, GPU)
« on: September 30, 2013, 09:16:33 AM »
I make several test. In the "Height field" processors operate at 100%, the ram  10 to 15%. In arbitrary, processors operate at 60% and the memory seems longer used.
Could someone explain to me how the software uses different components (Porcesseur, RAM, GPU) for the different calculation process ?
thank you

Alexey Pasumansky

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Re: Use of components (processor, RAM, GPU)
« Reply #1 on: September 30, 2013, 11:33:23 AM »
Hello Vct,

PhotoScan processing steps are well parallelized, so during most of the stages 100% of CPU cores are used.
However, if there is insufficient RAM to perform the operation and swap is used, CPU usage will fall. Please check approximate memory consumption peaks depending on the processing stage and other parameters: http://www.agisoft.ru/wiki/PhotoScan/Tips_and_Tricks#Memory_Requirements
Height Field is less demanding to RAM than Arbitrary.
Best regards,
Alexey Pasumansky,
Agisoft LLC

Exhale

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Re: Use of components (processor, RAM, GPU)
« Reply #2 on: November 20, 2013, 09:28:04 PM »
Hi Alexey,

In this case,  what would you say about fallowing config?

2 x Xeon 8C E5-2640v2  CPU
8 x 16GB 14900R DIMM 1866MHZ RAM
4 x 300GB SAS 10K RPM HDD (Raid 1+0)
2 x 750WATT Power Supply ......etc

Video Matrox G200eR2 with 16 MB memory integrated into the IMM2. Maximum resolution is 1600x1200 at 75 Hz with 16 M colors.

So, please tell me about Video Card,  would it cause a big problem ?

Wishgranter

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Re: Use of components (processor, RAM, GPU)
« Reply #3 on: November 20, 2013, 10:17:58 PM »
yes it would. probably would not even possible to use AGI. try put there something better, say 7970.....
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Exhale

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Re: Use of components (processor, RAM, GPU)
« Reply #4 on: November 21, 2013, 10:36:07 AM »
Unfortunately, amd-Ati GPU is not supported by server vendors. It is like this for HP , IBM and they say amd-ati 3rd party gpu and it makes the server out of guarantee. However they fully support nvidia. quadro 6000 , quadro 4000 , and some model server supports even other high-end gpus like Tesla K40 Tesla K20X Tesla K20 Tesla K10..
Anyways, thx for your advice. I will go for NVIDIA Quadro 6000 6GB   ;D

Wishgranter

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Re: Use of components (processor, RAM, GPU)
« Reply #5 on: November 21, 2013, 11:45:42 AM »
Im put together my workstation, its with Server mobo, try search for workstation setups... where you live ?

the Professinal cards are nothing extra as performance wise, we have here HP with Quadro 2000, and it s much slower as my 7970, not mean in AGI, but in 3D printing sw where we place models. im bit dissapointed too with the display performance....

Professional cards are good for CAD, because of optimized drivers for that task, but not so good for compute...   
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Exhale

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Re: Use of components (processor, RAM, GPU)
« Reply #6 on: November 21, 2013, 02:35:59 PM »
I see, so probably I will go for dual 7970 gpu and configure a workstation.

I saw lot's of chart like the fallowing;

Device 1 performance: 161.974 million samples/sec (CPU)
Device 2 performance: 176.341 million samples/sec (GeForce GTX 590)
Device 3 performance: 170.51 million samples/sec (GeForce GTX 590)
Device 4 performance: 615.622 million samples/sec (Tahiti)

Thx