AMD APP Profiler has been succeeded by AMD’s CodeXL. With the exception of critical bug fixes, there will be no new versions of APP Profiler. For new features, continuous support and a unified developer tools suite, please visit AMD’s CodeXL web page and check out the CodeXL Forum.
The AMD APP Profiler is a performance analysis tool that gathers data from the OpenCL™ run-time and AMD Radeon™ GPUs during the execution of an OpenCL™ application. We can then use this information to discover bottlenecks in an application and find ways to optimize the application’s performance for AMD platforms.
OpenCL and the OpenCL logo are trademarks of Apple Inc. used by permission by Khronos.
What’s New in Version 2.5
- Support for AMD APP SDK v2.7.
- Support for OpenCL™ 1.2.
- Support for collecting performance counters on APU devices.
- Full support for profiling with AMD Radeon™ HD7000 series GPUs based on Graphics Core Next/Southern Islands:
- Added support for kernel occupancy analysis.
- Added support for collecting performance counters for DirectCompute (DirectX 11) applications.
- Addition of SALUBusy counter.
- Fixed value reported for VALUBusy counter.
- The values reported for LDSFetchInsts and LDSWriteInsts counters were inaccurate on AMD Radeon™ HD7000 series GPUs; thus for those GPUs, those two counters have been replaced by a single LDSInsts counter.
- Fixed display of kernel ISA.
- Improved OpenCL™ analysis module:
- Added detection of deprecated OpenCL™ APIs.
- Added support for showing source and destination location, as well as zero-copy status for memory transfers initiated using clEnqueueMapBuffer or clEnqueueMapImage. This information is displayed in the API Trace view.
- Added support for Microsoft® Visual Studio® projects that use User-defined Macros in the project settings.
- Fixed the –workingdirectory (-w) command line switch (set current directory) on Linux.
- Fixed some problems with importing previously-generated profile results into Microsoft® Visual Studio®.
- Changed the default installation directory on Windows to %PROGRAMFILES(X86)%\AMD\AMD APP Profiler to make it more consistent with other AMD tools (i.e gDEBugger and CodeAnalyst)
- Collect OpenCL™ Application Trace
- View and debug the input parameters and output results for all OpenCL™ API calls
- Search the API calls
- Navigate to the source code that called an OpenCL™ API
- Specify which OpenCL™ APIs will be traced
- Collect GPU Performance Counters of AMD Radeon™ graphics cards
- Show kernel resource usages
- Show the number of instructions executed by the GPU
- Show the GPU utilization
- Show the GPU memory access characteristics
- Measure kernel execution time
- OpenCL™ Timeline visualization
- Visualize the application high level structure
- Visualize kernel execution and data transfer operations
- Visualize host code execution
- Annotate host code in the timeline with performance markers using the included CLPerfMarkerAMD library
- OpenCL™ Application Summary pages
- Find incorrect or inefficient usage of the OpenCL™ API using the OpenCL™ analysis module
- Find the API hotspots
- Find the bottleneck between kernel execution and data transfer operations
- Find the top 10 data transfer and kernel execution operations
- OpenCL™ Kernel Occupancy Viewer
- Calculates and displays a kernel occupancy number, which estimates the number of in-flight wavefronts on a compute unit as a percentage of the theoretical maximum number of wavefronts that the compute unit can support
- Find out which kernel resource (GPR usage, LDS size, or Work-group size) is currently limiting the number of in-flight wavefronts
- Displays graphs showing how kernel occupancy would be affected by changes in each kernel resource
- Display the AMD IL and ISA (hardware disassembly) code of the kernel for OpenCL™ kernels and DXASM code for DirectCompute kernels.
- Microsoft Windows Vista or 7 (32 bit/64 bit) or Linux 32-bit/64-bit
- [Optional] Microsoft Visual Studio 2008 and 2010 (Standard/Professional/Team System Edition)
- To profile OpenCL™ applications:
- AMD APP SDK v2.7 or later
- [GPU device] AMD Catalyst with OpenCL™ GPU support (12.4 or newer)
- [GPU device] AMD Radeon™ HD 4000 series or newer
- To profile DirectCompute applications:
- Microsoft DirectX run-time (June 2010 or later)
- AMD Radeon™ HD 5000 series or newer
AMD APP Profiler Screenshot
- AMD Accelerated Parallel Processing OpenCL Programming Guide
- AMD APP Profiler’s article at Siggraph 2010
- OpenCL™ Zone