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[SYCL] Add work-around for event leak in profiling tag #14985

Merged
merged 1 commit into from
Aug 8, 2024
Merged

[SYCL] Add work-around for event leak in profiling tag #14985

merged 1 commit into from
Aug 8, 2024

Commits on Aug 7, 2024

  1. [SYCL] Add work-around for event leak in profiling tag 

    Due to a bug in the L0 UR adapter, the profiling tag extension leaks
UR events on out-of-order queues. This is not due to the profiling tag
events themselves, but rather due to the need for a barrier enforcing
correct ordering of the inserted tag. Since the barrier ensures
completion prior to the profiling tag executing, the output event is not
needed, but the L0 adapter leaks the event if no output event is
specified. To combat this, this work-around passes an output event and
immediately frees it after the barrier has been submitted.

See oneapi-src/unified-runtime#1947.

Signed-off-by: Larsen, Steffen <[email protected]>
    @steffenlarsen
    steffenlarsen committed Aug 7, 2024
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