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[QNN-EP] Resolve VTCM buffer sharing bugs #25622

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Merged
HectorSVC merged 1 commit into from
Aug 1, 2025
Merged

[QNN-EP] Resolve VTCM buffer sharing bugs #25622

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18 changes: 14 additions & 4 deletions onnxruntime/core/providers/qnn/builder/qnn_backend_manager.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -787,10 +787,12 @@ Status QnnBackendManager::CreateContextVtcmBackupBufferSharingEnabled(std::unord

std::vector<QnnContext_Params_t> context_params_list;
std::vector<QnnContext_ParamsV1_t> context_paramsv1_list;
std::vector<const QnnContext_Params_t*> context_params_ptr_list(context_bin_map.size() + 1);
std::vector<const QnnContext_Params_t*> context_params_ptr_list;
std::vector<std::unique_ptr<char[]>> buffer_list;

size_t idx = 0;
context_params_list.reserve(context_bin_map.size());
context_params_ptr_list.reserve(context_bin_map.size() + 1);

for (auto& it : context_bin_map) {
auto context_bin_filepath = it.first;

Expand Down Expand Up @@ -821,9 +823,9 @@ Status QnnBackendManager::CreateContextVtcmBackupBufferSharingEnabled(std::unord
buffer_list.push_back(std::move(buffer));
context_params_list.push_back(std::move(context_params));
context_paramsv1_list.push_back(std::move(context_params_v1));
context_params_ptr_list[idx++] = &context_params_list.back();
context_params_ptr_list.push_back(&context_params_list.back());
}
context_params_ptr_list[idx] = nullptr;
context_params_ptr_list.push_back(nullptr);
auto result = qnn_interface_.contextCreateFromBinaryListAsync(backend_handle_,
device_handle_,
context_params_ptr_list.data(),
Expand Down Expand Up @@ -1178,6 +1180,14 @@ Status QnnBackendManager::SetupBackend(const logging::Logger& logger,

#if QNN_API_VERSION_MAJOR == 2 && (QNN_API_VERSION_MINOR >= 26)
if (vtcm_backup_buffer_sharing_enabled_) {
// If a context bin filepath has not been processed yet,
// then a new context must be created for the set of context bins
auto first_mapping_it = ep_context_handle_map_.find(context_bin_map.begin()->first);
if (first_mapping_it == ep_context_handle_map_.end()) {
LOGS(logger, VERBOSE) << "Creating context for new set of context binaries";
return CreateContextVtcmBackupBufferSharingEnabled(context_bin_map);
}

LOGS(logger, VERBOSE) << "Mapping contexts to new EP main context nodes";

for (auto& it : context_bin_map) {
Expand Down
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