[frontend] added overflow checks in debug mode
#4589
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peterbell10
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Aug 30, 2024
python/triton/language/semantic.py
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| def binary_op_sanitize_overflow_impl(lhs: tl.tensor, rhs: tl.tensor, builder: ir.builder, binary_op: callable): | ||
| if lhs.type.scalar.int_bitwidth >= 64 or not builder.options.debug: |
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Should this be a separate option from enabling asserts generally, so it's possible to enable asserts without running overflow checks in every kernel? I'm thinking specifically of inductor which uses asserts to check indirect indexing expressions, but wouldn't want the performance hit of checking every index calculation.
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triton-lang#4589 mistakenly deactivated these and reverted to the previous always-cast-to-int32 semantics.
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#4589 mistakenly deactivated these and reverted to the previous always-cast-to-int32 semantics.
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Reported in https://github.com/triton-lang/triton/pull/5033/files#r1825438371 This was broken by #4589
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In upstream triton, triton-lang/triton#4589 introduces overflow checks. However, overflow checks likely add some overhead, and have some correctness bugs at the moment (e.g. triton-lang/triton#5033). Let's set `sanitize_overflow=False` but keep `debug=True` so that we can keep using device_assert but without the additional asserts added by `sanitize_overflow`. Pull Request resolved: #139502 Approved by: https://github.com/bertmaher
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…9502) In upstream triton, triton-lang/triton#4589 introduces overflow checks. However, overflow checks likely add some overhead, and have some correctness bugs at the moment (e.g. triton-lang/triton#5033). Let's set `sanitize_overflow=False` but keep `debug=True` so that we can keep using device_assert but without the additional asserts added by `sanitize_overflow`. Pull Request resolved: pytorch#139502 Approved by: https://github.com/bertmaher
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Luosuu
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triton-lang#4589 mistakenly deactivated these and reverted to the previous always-cast-to-int32 semantics.
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triton-lang#4589 mistakenly deactivated these and reverted to the previous always-cast-to-int32 semantics.
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triton-lang#4589 mistakenly deactivated these and reverted to the previous always-cast-to-int32 semantics.
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triton-lang/triton#4589 mistakenly deactivated these and reverted to the previous always-cast-to-int32 semantics.
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