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Geometry Nodes: Speedup of Shortest Edge Paths node #114707

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Hans Goudey merged 6 commits from mod_moder/blender:tmp_speedup_shortest_edge_paths_better_cache into main 2023-12-18 20:32:25 +01:00
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Iliya Katushenock commented 2023-11-10 15:12:14 +01:00
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Speedup of node Shortest Edge Paths node by creating
array for other_edge_vert's and computing them in parallel separate loop.
This also provide better CPU cache by avoiding reading
edges in main loop to deduce other vertex (which happen multiple time for each vertex).

For cuboid with 700x700x700 points and 0.066667% random selection
of Edge Vertex this will change 1012.4 ms -> 618.9 ms in shortest_paths function.

Speedup of node Shortest Edge Paths node by creating array for other_edge_vert's and computing them in parallel separate loop. This also provide better CPU cache by avoiding reading edges in main loop to deduce other vertex (which happen multiple time for each vertex). For cuboid with `700`x`700`x`700` points and `0.066667%` random selection of `Edge Vertex` this will change `1012.4 ms` -> `618.9 ms` in `shortest_paths` function.
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Iliya Katushenock added the
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Geometry Nodes
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Iliya Katushenock added 1 commit 2023-11-10 15:12:27 +01:00
Iliya Katushenock added this to the Nodes & Physics project 2023-11-10 15:13:40 +01:00
Iliya Katushenock requested review from Hans Goudey 2023-11-10 15:19:00 +01:00
Iliya Katushenock added 1 commit 2023-11-10 15:31:32 +01:00
Iliya Katushenock added 1 commit 2023-11-10 15:54:17 +01:00
Iliya Katushenock added 2 commits 2023-11-14 13:20:25 +01:00
Hans Goudey added 1 commit 2023-12-18 20:26:40 +01:00
Hans Goudey approved these changes 2023-12-18 20:29:00 +01:00
Hans Goudey left a comment
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I observed a nice speedup too. Increasing memory usage is unfortunate, but it seems worth it given the numbers.

BEFORE: Timer 'shortest_paths': (Average: 829.38 ms, Min: 801.75 ms, Last: 809.16 ms)
AFTER:  Timer 'shortest_paths': (Average: 524.19 ms, Min: 513.52 ms, Last: 540.66 ms)
I observed a nice speedup too. Increasing memory usage is unfortunate, but it seems worth it given the numbers. ``` BEFORE: Timer 'shortest_paths': (Average: 829.38 ms, Min: 801.75 ms, Last: 809.16 ms) AFTER: Timer 'shortest_paths': (Average: 524.19 ms, Min: 513.52 ms, Last: 540.66 ms) ```
Hans Goudey merged commit c106066900 into main 2023-12-18 20:32:25 +01:00
Iliya Katushenock deleted branch tmp_speedup_shortest_edge_paths_better_cache 2023-12-19 04:33:31 +01:00
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Blocks
#114733 Geometry Nodes: Uniform mode in Shortest Edge Paths node
blender/blender
Depends on
#114683 Cleanup: Geometry Nodes: General topology map creation in Shortest Edge Paths
blender/blender
Reference: blender/blender#114707
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