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Author Topic: speed of ALIGN step  (Read 3292 times)

Wishgranter

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speed of ALIGN step
« on: January 27, 2014, 09:48:14 PM »
Hi all , have you seen the speedup of the 1.x.x version in the Align stage ?

115 images no mask, Windows version

i7 - from 70 minutes to 30minutes
Dual Xeon - from 60 minutes to 18 minutes.....

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FoodMan

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Re: speed of ALIGN step
« Reply #1 on: January 28, 2014, 09:21:34 AM »
yes great speed...  8) 8)

Infinite

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Re: speed of ALIGN step
« Reply #2 on: January 28, 2014, 02:55:08 PM »
Can confirm. HUGE speed increase during alignment phase on a 118x chunk.
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Marcel

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Re: speed of ALIGN step
« Reply #3 on: January 31, 2014, 03:46:16 PM »
I have the following two computers:

i7 4930K 3.4Ghz - total 6 cores, 12 threads
Dual Xeon X5650 2.6Ghz  - total 12 cores, 24 threads

The i7 is almost twice as fast when it comes to aligning images.

When I check the task manager during the 'Matching Points' phase, the i7 has a continous 100% CPU load. For the dual Xeon, the load spikes between 42% and 85%. So the CPUs don't seem to be used very effectively on the Dual Xeon machine. (See attachments).

Has it been this way in previous versions of Photoscan as well? When I tested the performance two months back, the i7 was only around 15% faster than the Dual Xeons.