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

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.

See Also