[SYCL][Graph] in-order queue barrier fix #13193
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Fix for intel#13066 The special case for using barriers on an in-order queue is that the last event/node submitted to the queue is used as an event for the barrier to depend on. Looking at the last command submitted to the queue isn't correct for a graph, because previous commands submitted to a graph could have been added explicitly or from recording another queue. Therefore, there is not guaranteed that the last command submitted by the in-order queue is correct dependency for the barrier node in the graph.
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fabiomestre
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sycl/doc/extensions/experimental/sycl_ext_oneapi_graph.asciidoc
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Co-authored-by: Ori Sky <4142775+ori-sky@users.noreply.github.com>
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@intel/llvm-gatekeepers Can you merge this please |
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Fix for #13066
The special case for using barriers on an in-order queue is that the last event/node submitted to the queue is used as an event for the barrier to depend on.
Looking at the last command submitted to the queue isn't correct for a graph, because previous commands
submitted to a graph could have been added explicitly or from recording another queue. Therefore, there is not guaranteed that the last command submitted by the in-order queue is correct dependency for the barrier node in the graph.