[OpenDroneMap-users] Multicore/SMP performance

StuartL opendronemap at livings.co.uk
Sat Jun 3 03:54:22 PDT 2017


Hi,

I'm running a new install of ODM in a VirtualBox Ubuntu guest VM on 
Windows.  The guest VM has four cores but ODM only seems to use one core.

Looking at some other posts people seem to be talking about using 
massive numbers of cores so I feel like I must be doing something wrong.

Possibly relevant information:
- ODM was originally compiled with only one core in the VM.  I later 
increased the number of cores.
- I'm measuring it using one core by monitoring with 'top' and pressing 
'1' to reveal individual CPU cores.  At all steps so far (currently up 
to Computing depthmap for...) it seems to flatline one core but the 
others are nearly idle.

Does it deduce the number of cores at point of compilation?  Do I need 
to enable something to allow multi-core support?  Are the steps I've 
observed so far all single-threaded?

Thanks for a wonderful piece of software!

Stuart


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