* Fix double buffer data race - fixes relatively rare data race in double buffering scheme In `rocprofiler::buffer::instance::emplace`, the `container::record_header_buffer::get_record_headers()` function returned a `std::vector<rocprofiler_record_header_t*>` and then invoked callback to tool. It was possible for that callback to still be executing while the buffer was being updated. This potentially introduced a scenario where the rocprofiler_record_header_t* was modified (or corrupted) before the tool processed the record. In rocprofv3, this would result in a "future" buffer record showing up among "past" buffer records. E.g., correlation id sequence of 1-15 where the buffer flushes after five values, could result in this during processing: | | | | | | |:---:|:---:|:---:|:---:|:---:| | 1 | 2 | 3 | 4 | 15 | | 6 | 7 | 8 | 9 | 10 | | 11 | 12 | 13 | 14 | 15 | Because buffer A (of double buffering scheme) originally containing corr ids 1-5 stalled after process corr id 4 (e.g. write to disk), buffer B filled up with 6-10 and started flushing, causing a switch back to buffer A, and buffer A was filled with 11-15 by the time callback accessed what was originally corr id 5 but was now updated to corr id 15. * Update CHANGELOG * misc minor cleanup --------- Co-authored-by: Jonathan R. Madsen <jonathanrmadsen@gmail.com>
ROCprofiler-SDK: Application Profiling, Tracing, and Performance Analysis
Important
We are phasing out development and support for
ROCTracer, ROCprofiler, rocprof, and rocprofv2in favour ofROCprofiler-SDKandrocprofv3in upcoming ROCm releases. Starting with theROCm 6.4release, only critical defect fixes will be addressed for older versions of the profiling tools and libraries. We encourage all users to upgrade to the latest version of theROCprofiler-SDKlibrary and therocprofv3tool to ensure continued support and access to new features.
Please note that we anticipate the end of life for ROCprofiler V1/V2 and ROCTracer within nine months after the ROCm 7.0 release, aligning with the Q1 2026.
Overview
ROCProfiler-SDK is AMD’s new and improved tooling infrastructure, providing a hardware-specific low-level performance analysis interface for profiling and tracing GPU compute applications. To see what's changed Click Here
Note
The published documentation is available at ROCprofiler-SDK documentation in an organized, easy-to-read format, with search and a table of contents. The documentation source files reside in the
rocprofiler-sdk/source/docsfolder of this repository. As with all ROCm projects, the documentation is open source. For more information on contributing to the documentation, see Contribute to ROCm documentation.
GPU Metrics
- GPU hardware counters
- Dispatch Counter Collection
- Device Counter Collection
- PC Sampling (Host Trap)
API Trace Support
- HIP API tracing
- HSA API tracing
- Marker (ROCTx) tracing
- Memory copy tracing
- Memory allocation tracing
- Page Migration Event tracing
- Scratch Memory tracing
- RCCL API tracing
- rocDecode API tracing
- rocJPEG API tracing
Parallelism API Support
- HIP
- HSA
- MPI
- Kokkos-Tools (KokkosP)
- OpenMP-Tools (OMPT)
Tool Support
rocprofv3 is the command line tool built using the rocprofiler-sdk library and shipped with the ROCm stack. To see details on the command line options of rocprofv3, please see rocprofv3 user guide Click Here
Documentation
We make use of doxygen to generate API documentation automatically. The generated document can be found in the following path:
<ROCM_PATH>/share/html/rocprofiler-sdk
ROCM_PATH by default is /opt/rocm It can be set by the user in different locations if needed.
Build and Installation
git clone https://github.com/ROCm/rocprofiler-sdk.git rocprofiler-sdk-source
cmake \
-B rocprofiler-sdk-build \
-D ROCPROFILER_BUILD_TESTS=ON \
-D ROCPROFILER_BUILD_SAMPLES=ON \
-D CMAKE_INSTALL_PREFIX=/opt/rocm \
rocprofiler-sdk-source
cmake --build rocprofiler-sdk-build --target all --parallel 8
To install ROCprofiler, run:
cmake --build rocprofiler-sdk-build --target install
Please see the detailed section on build and installation here: Click Here
Support
Please report in the Github Issues OR send an email to dl.ROCm-Profiler.support@amd.com
Limitations
-
Individual XCC mode is not supported.
-
By default, PC sampling API is disabled. To use PC sampling. Setting the
ROCPROFILER_PC_SAMPLING_BETA_ENABLEDenvironment variable grants access to the PC Sampling experimental beta feature. This feature is still under development and may not be completely stable.-
Risk Acknowledgment: By activating this environment variable, you acknowledge and accept the following potential risks:
- Hardware Freeze: This beta feature could cause your hardware to freeze unexpectedly.
- Need for Cold Restart: In the event of a hardware freeze, you may need to perform a cold restart (turning the hardware off and on) to restore normal operations. Please use this beta feature cautiously. It may affect your system's stability and performance. Proceed at your own risk.
-
At this point, We do not recommend stress-testing the beta implementation.
-
Correlation IDs provided by the PC sampling service are verified only for HIP API calls.
-
Timestamps in PC sampling records might not be 100% accurate.
-
Using PC sampling on multi-threaded applications might fail with
HSA_STATUS_ERROR_EXCEPTION.Furthermore, if three or more threads launch operations to the same agent, and if PC sampling is enabled, theHSA_STATUS_ERROR_EXCEPTIONmight appear.
-
-
gfx10, gfx11 and gfx12 requires a stable power state for counter collection. This includes Radeon 7000 GPUs.
# For device <N>. Use 'rocm-smi' or 'amd-smi monitor' to see device number. sudo amd-smi set -g <N> -l stable_std # After profiling, set power state back to 'auto' sudo amd-smi set -g <N> -l autoThe gfx version can be found via
amd-smi static --asic -g <N>in theTARGET_GRAPHICS_VERSIONfield:$ amd-smi static -a -g 2 GPU: 2 ASIC: MARKET_NAME: Navi 33 [Radeon Pro W7500] VENDOR_ID: 0x1002 VENDOR_NAME: Advanced Micro Devices Inc. [AMD/ATI] SUBVENDOR_ID: 0x1002 DEVICE_ID: 0x7489 SUBSYSTEM_ID: 0x0e0d REV_ID: 0x00 ASIC_SERIAL: N/A OAM_ID: N/A NUM_COMPUTE_UNITS: 28 TARGET_GRAPHICS_VERSION: gfx1102
Warning
The latest mainline version of AQLprofile can be found at https://repo.radeon.com/rocm/misc/aqlprofile/. However, it's important to note that updates to the public AQLProfile may not occur as frequently as updates to the rocprofiler-sdk. This discrepancy could lead to a potential mismatch between the AQLprofile binary and the rocprofiler-sdk source.