GPU Metrics Reference

Intel® VTune™ Amplifier collects and analyzes the following groups of GPU metrics for Intel® HD Graphics and Intel® Iris® Graphics:

• Overview metrics:

  • Memory Read Bandwidth

  • Memory Write Bandwidth

  • L3 Miss Rate

  • Sampler Busy

  • Sampler Is Bottleneck

  • GPU Memory Texture Read Bandwidth

  Starting with the 5th generation Intel Core™ processor family (code name: Broadwell), the following metrics are also included:

  • L3 Shader Bandwidth

  • L3 Sampler Bandwidth

  • L3 Miss Ratio

  • Shared Local Memory Read Bandwidth

  • Shared Local Memory Write Bandwidth

• Compute basic (with global/local memory accesses) metrics:

  • Untyped Memory Read Bandwidth

  • Untyped Memory Write Bandwidth

  • Typed Memory Read Transactions

  • Typed Memory Write Transactions

  • Shared Local Memory Read Bandwidth

  • Shared Local Memory Write Bandwidth

  • Render/GPGPU Command Streamer Loaded

  • GPU EU Array Usage

  Starting with the 5th generation Intel Core processor family, the following metrics are also included:

  • EU Threads Occupancy

  • EU IPC Rate

  • EU 2 FPU Pipelines Active

  • EU Send Pipeline Active

  • L3 Shader Bandwidth

  • LLC Miss Rate due GPU Lookups

  • LLC Miss Ratio due GPU Lookups

• Compute Extended metrics supported only for 5th generation Intel Core™ processor family (code name: Broadwell):

  • EU Threads Occupancy

  • EU IPC Rate

  • EU 2 FPU Pipelines Active

  • EU Send Pipeline Active

  • L3 Shader Bandwidth

  • Untyped Reads Coalescence

  • Untyped Writes Coalescence

  • Typed Reads Coalescence

  • Typed Writes Coalescence

  • Shared Local Memory Read Bandwidth

  • Shared Local Memory Write Bandwidth

• Full Compute group of metrics combines metrics from the Overview and Compute Basic groups, which helps explore the reasons why the GPU execution units were waiting using the same data view.

All groups also include the following metrics tracking EU activity: EU Array Active, EU Array Stalled, EU Array Idle, Computing Threads Started, and Core Frequency.

関連情報