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79 lines
2.3 KiB
ReStructuredText
79 lines
2.3 KiB
ReStructuredText
.. meta::
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:description: Learn about the Command Processor Compute (CPC) metrics in ROCm Compute Profiler, including utilization, interface activity, stalls, and cache behavior on RDNA3.5 (gfx115x).
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:keywords: ROCm Compute Profiler, RDNA, gfx115x, command processor, CPC
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.. _rdna-command-processor:
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=========================
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Command processor (CP)
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=========================
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The command processor (CP) is the GPU front-end that connects the host and
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kernel driver to on-GPU scheduling: it pulls work from HSA queues, decodes
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packets, and dispatches kernel launches to the Shader engine Workgroup Manager (SPI) or Workgroup processor (WGP) path.
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On Instinct GPUs, the profiler often separates the metrics into Command Processor
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Fetcher (CPF) and Command Processor Compute (CPC). The gfx115x analysis panels
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emphasize CPC and ME (Micro Engine) activity, including utilization,
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interface utilization, stall cycles, memory requests, and instruction cache.
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For the complete CDNA architecture overview and the CPF and CPC metric tabs across AMD Instinct MI-Series GPUs, see
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:doc:`../cdna/command-processor` under CDNA-CDNA4.
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Command processor compute (CPC) - gfx115x
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===========================================
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CPC utilization
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---------------
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.. tab-set::
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.. tab-item:: RDNA3.5 (gfx115x)
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:selected:
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.. jinja:: rdna115x-cpc-utilization-gfx115x
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:file: _templates/metrics_table.j2
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CPC interface utilization
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-------------------------
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.. tab-set::
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.. tab-item:: RDNA3.5 (gfx115x)
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:selected:
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.. jinja:: rdna115x-cpc-interface-utilization-gfx115x
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:file: _templates/metrics_table.j2
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Micro Engine (ME) stall cycles
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-------------------------------
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.. tab-set::
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.. tab-item:: RDNA3.5 (gfx115x)
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:selected:
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.. jinja:: rdna115x-mec-stall-cycles-gfx115x
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:file: _templates/metrics_table.j2
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CPC memory requests
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-------------------
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.. tab-set::
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.. tab-item:: RDNA3.5 (gfx115x)
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:selected:
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.. jinja:: rdna115x-cpc-memory-requests-gfx115x
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:file: _templates/metrics_table.j2
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Micro Engine (ME) instruction cache
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------------------------------------
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.. tab-set::
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.. tab-item:: RDNA3.5 (gfx115x)
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:selected:
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.. jinja:: rdna115x-mec-instruction-cache-gfx115x
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:file: _templates/metrics_table.j2
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