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Fix composed-graph cudaErrorMisalignedAddress at 4D production shapes and CI OOM on lcov install - #269
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…tion shapes — root-cause planner/executor bug, fix, add regression tests
The bare 'apt-get install -y lcov' pulls 78 recommended packages (fontconfig, fonts-dejavu, libgd, etc.), exhausting runner memory. The runner receives SIGKILL during unpack before any test runs. Adding --no-install-recommends limits the install to lcov and its hard dependencies only.
Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@## main #269 +/- ##
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+ Coverage 85.70% 85.78% +0.08%
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Files 129 129 Lines 6457 6495 +38 ==========================================
+ Hits 5534 5572 +38
Misses 923 923 ☔ View full report in Codecov by Harness. 🚀 New features to boost your workflow:
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Fix composed-graph cudaErrorMisalignedAddress at 4D shapes; fix CI OOM
Two bugs in the planner/executor caused
cudaErrorMisalignedAddressorsilent data corruption when composing ops on 4D tensors where H > W
(e.g.,
(1,4,128,32)).Bug 1 — Cast
_InShape::W == 1branch (cast.h:23): scalar pathprocessed 1 element while
NelemPerThread = 2, skipping every otherH element. Triggered at shapes like
(1,4,128,1).Bug 2 — Default tile
(1, 64)for Cast and RoPE: at(1,4,128,32)(H=128, W=32), the tile spans 2× W, forcing H-consecutive access that
misaligns addresses.
Fix: remove the dead
W==1scalar branch incast.h; adddefault_configoverrides inops_cast.cppandops_rope.cppselectingtile
(32,2)when H > W and W ≥ 2. Add 23 regression tests intest_composed_graph_shapes.pycovering rope, composed rmsnorm, andcomposed silu·gate at the exact production shapes that crashed.
CI fix: add
--no-install-recommendstoapt-get install lcovinut.yml. The bare install pulled 78 recommended packages (fontconfig,fonts-dejavu, etc.), causing OOM/SIGKILL on the self-hosted runner.
Files changed:
ark/include/kernels/cast.h— remove dead W==1 branchark/ops/ops_cast.{cpp,hpp}— add default_config for H > Wark/ops/ops_rope.{cpp,hpp}— add default_config for H > Wpython/unittest/ops/test_composed_graph_shapes.py— 23 regression tests.github/workflows/ut.yml— --no-install-recommends for lcov