tile-size-0-40-100-failure

[EmilySillars]

• Changing dispatch 9's tile size from 56x100 to 40x100 causes a build error.
• This must be a bug, because 40x100 is smaller than 56x100, meaning it definitely fits in L1 (tile size is not too big).
• Full build output attached: dispatch-9-build-error.txt

[superlopuh]

If you look at the error, it's all in xDSL, not in Quidditch, so it's not really a bug related to L1 sizes. It seems like for some reason one of the kernels that shouldn't be compiled via xDSL, as we don't handle math.exp lowering, is still passed to it. Do you happen to know where the logic for this is?

[EmilySillars]

• No, that math.exp warning is always there. That does not cause the build to fail.
• I just re-built successfully on the small-tile branch using tile size 0-56-100, and it builds fine. You will see that the math.exp warning remains: build-output-dispatch-9-0-56-100.txt
• This bug is indeed related to tile sizes: when I change the tile size to 0-40-100, the build fails.
• here is a diff of the two build outputs, one for tile size 56x100, and one for tile size 40x100:
  success_vs_failure.txt

[superlopuh]

Oh I see! That's annoying that the compilation is noisy like that, feels like a bug to me TBH.