[NPU] Use single command queue

[pereanub]

Details:

• Use single command queue for all sub-graphs to optimize doorbell usage

Tickets:

• CVS-183280

AI Assistance:

• AI assistance used: no / yes
• If yes, summarize how AI was used and what human validation was performed (build/tests/manual checks).

[Copilot]

Pull request overview

This PR refactors Intel NPU Level Zero command queue handling to support reusing a single (pooled) command queue across graph/pipeline execution paths, moving from per-graph CommandQueue ownership to a descriptor-based approach.

Changes:

• Replaced direct CommandQueue storage/exposure with CommandQueueDesc + versioning on Graph/DynamicGraph, and updated pipelines to reacquire a queue when the descriptor changes.
• Introduced a global CommandQueuePool keyed by CommandQueueDesc to reuse command queues.
• Added toZeQueueWorkloadType() helper and updated call sites accordingly.

Reviewed changes

Copilot reviewed 15 out of 15 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
src/plugins/intel_npu/src/utils/src/zero/zero_wrappers.cpp	Updates CommandQueue ctor to accept a descriptor and adds CommandQueuePool implementation.
src/plugins/intel_npu/src/utils/src/zero/zero_init.cpp	Adds stdout prints about external memory support detection.
src/plugins/intel_npu/src/utils/include/intel_npu/utils/zero/zero_wrappers.hpp	Introduces CommandQueueDesc and CommandQueuePool, updates CommandQueue API.
src/plugins/intel_npu/src/utils/include/intel_npu/utils/zero/zero_utils.hpp	Adds conversion helper for workload type to Level Zero enum.
src/plugins/intel_npu/src/compiler_adapter/src/ze_graph_ext_wrappers.cpp	Switches graph init path to acquire queue via CommandQueuePool.
src/plugins/intel_npu/src/compiler_adapter/src/weightless_graph.cpp	Switches init-schedule queue creation to pooled queue acquisition.
src/plugins/intel_npu/src/compiler_adapter/src/graph.cpp	Replaces stored queue with descriptor + versioning; updates workload type handling and init path.
src/plugins/intel_npu/src/compiler_adapter/src/dynamic_graph.cpp	Same as graph.cpp for dynamic graphs; uses descriptor + versioning.
src/plugins/intel_npu/src/compiler_adapter/include/graph.hpp	Updates public interface to expose queue descriptor + version instead of queue pointer.
src/plugins/intel_npu/src/compiler_adapter/include/dynamic_graph.hpp	Updates public interface to expose queue descriptor + version instead of queue pointer.
src/plugins/intel_npu/src/common/src/igraph.cpp	Updates base virtuals to new descriptor-based queue API.
src/plugins/intel_npu/src/common/include/intel_npu/common/igraph.hpp	Updates interface: get_command_queue_desc(), get_command_queue_desc_version(), non-const set_workload_type().
src/plugins/intel_npu/src/backend/src/zero_pipeline.cpp	Uses pooled command queue and refreshes it on descriptor version changes; rebinds fences accordingly.
src/plugins/intel_npu/src/backend/src/zero_dynamic_pipeline.cpp	Same as zero_pipeline.cpp for dynamic pipeline.
src/plugins/intel_npu/src/backend/include/zero_pipeline.hpp	Adds _command_queue and _command_queue_version members to pipeline base.

[Copilot]

Pull request overview

Copilot reviewed 14 out of 14 changed files in this pull request and generated 4 comments.

[Copilot]

Pull request overview

Copilot reviewed 14 out of 14 changed files in this pull request and generated 3 comments.

[Copilot]

Pull request overview

Copilot reviewed 14 out of 14 changed files in this pull request and generated 2 comments.

[Copilot]

Pull request overview

Copilot reviewed 14 out of 14 changed files in this pull request and generated 3 comments.

[Copilot]

Pull request overview

Copilot reviewed 14 out of 14 changed files in this pull request and generated 3 comments.

[Copilot]

Pull request overview

Copilot reviewed 14 out of 14 changed files in this pull request and generated 4 comments.

[Copilot]

Pull request overview

Copilot reviewed 16 out of 16 changed files in this pull request and generated 2 comments.