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[SYCL] Workaround for users with a lot of host accessors. #2296

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[SYCL] Workaround for users with a lot of host accessors. #2296

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17 changes: 16 additions & 1 deletion sycl/source/detail/scheduler/graph_builder.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -162,7 +162,22 @@ Scheduler::GraphBuilder::getOrInsertMemObjRecord(const QueueImplPtr &Queue,
if (nullptr != Record)
return Record;

const size_t LeafLimit = 8;
static size_t LeafLimit = 0;

if (!LeafLimit) {
if (const char *Val = std::getenv("SYCL_LEAF_LIMIT"))
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Use sycl config

try {
LeafLimit = std::stoul(Val);
} catch (...) {
throw invalid_parameter_error(
"Invalid value for SYCL_LEAF_LIMIT environment variable",
PI_INVALID_VALUE);
}

if (!LeafLimit)
LeafLimit = 8;
}

MemObject->MRecord.reset(
new MemObjRecord{Queue->getContextImplPtr(), LeafLimit});

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