Are there locks down the the road in the
get_elemperhaps which gets in a way of better parralelism?
It looks like memory access is the bottleneck. read_elem_checked is the function…
No specific reason, but it doesn't make a difference here because there is a single assert per test. I can update it in a later patch for clarity
Some findings from profiling:
- SAT multithreaded implementation is 30-40% faster than single threaded SAT. On my machine, fullframe is now 3-4x slower than GPU
- SAT operation is the bottleneck…
6b46a68886
SAT is now always computed. Keep naive implementation for small kernel sizes for better accuracy
Using TBB was not much faster than openMP but multithreading in general helped in reducing the error (see updated images in description).
As agreed, I removed the fast. The filter still…
As discussed, I tried this and it didn't work. The reason is the small differences of 0.2 - 0.3 (2x - 3x actual mean) cause very large differences in the squared SAT, making it asymmetric and…
As discussed in the meeting, my concern was using SingleThreadedOperation for a multi-threaded execution. I will upload a patch using TBB.
