AMD APP SDK v3.0 Beta Developer Release Notes 1 What’s New in AMD APP SDK v3.0 Beta 1.1 New features in AMD APP SDK v3.0 Beta AMD APP SDK v3.0 Beta includes the following new features: OpenCL 2.0: There are 20 samples that demonstrate various features of OpenCL 2.0 such as Shared Virtual Memory, Platform Atomics, Device-side Enqueue, Pipes, New workgroup built-in functions, Program Scope Variables, Generic Address Space, and OpenCL 2.0 image features. For the complete list of the samples, see the AMD APP SDK Samples Release Notes (AMD_APP_SDK_Release_Notes_Samples.pdf) document. Support for Bolt 1.3 library. 6 additional samples that demonstrate various APIs in the Bolt C++ AMP library. One new sample that demonstrates the consumption of SPIR 1.2 binary. Enhancements and bug fixes in several samples. A lightweight installer that supports the following features: Customized online installation Ability to download the full installer for install and distribution 1.2 New features for AMD CodeXL version 1.6 The following new features in AMD CodeXL version 1.6 provide the following improvements to the developer experience: GPU Profiler support for OpenCL 2.0 API-level debugging for OpenCL 2.0 Power Profiling For information about CodeXL and about how to use CodeXL to gather performance data about your OpenCL application, such as application traces and timeline views, see the CodeXL home page. Developer Release Notes 1 of 4 2 Important Notes OpenCL 2.0 runtime support is limited to 64-bit applications running on 64-bit Windows and Linux operating systems only. C++ static kernel extensions supported for OpenCL 1.2 are not supported for OpenCL 2.0. If you are using Windows, verify that the AMDAPPSDKROOT environment variable is present. If the variable is not present, add it and set its value to one of the following: – C:\Program Files\AMD APP SDK\<APP SDK Version> (for 32-bit OS) – C:\Program Files (x86)\AMD APP SDK\<APP SDK Version> (for 64-bit OS) Check the Platform Vendor string, not the Platform Name, to determine AMD hardware. For example code that shows how to check and use the CL_PLATFORM_VENDOR string, see the AMD APP samples. Driver support for 7xx generation GPUs is EOL. AMD drivers no longer support 7xx generation GPUs; this includes support for ATI Radeon™ HD and ATI Mobility Radeon™ HD 4000 series devices, ATI FirePro™ V8750, V8700, V7750, V5700, V2750, ATI Mobility FirePro™ M7740, and AMD FireStream™ 9270, 9250. To develop applications using deprecated OpenCL™ API calls, #define CL_USE_DEPRECATED_OPENCL_1_1_APIS. When parsing #include directives, the OpenCL compiler resolves relative paths using the current working directory of the application through the -I compiler option. Under Windows, making OpenCL runtime calls from dllMain can result in undefined behavior. The binary clinfo.exe is located in the \Windows\System32 directory. On Linux and Windows platforms, every GPU is assigned an ordinal number. To expose only a subset of GPUs to a specific application, make the following environmental variable definition: GPU_DEVICE_ORDINAL=0,1,2 … . Support for Microsoft Visual Studio 2008 is deprecated. HD4XXX device support is EOL. Catalyst drivers no longer include support for these devices. See the OpenCL SDK driver and compatibility page for more details. See the AMD APP SDK Samples Release Notes for known issues and important notes for the SDK samples. See the CodeXL release notes for known issues and important notes for the SDK samples. 3 Naming Convention For Windows: The __stdcall calling convention is used for all Windows platforms. Function names are undecorated. It is not possible to use this OpenCL DLL on Windows with an application that was linked against a library using the __cdecl calling convention. For Linux: The calling convention is __cdecl. 2 of 4 Developer Release Notes 4 Resolved Issues For the latest information about the resolved issues in AMD APP SDK v3.0 Beta, see the AMD APP SDK documentation page. 5 Known Issues For the latest information about the known issues in AMD APP SDK v3.0 Beta, see the AMD APP SDK documentation page. 5.1 Compiler The compiler may accept illegal cast-to-union (GNU GCC Extension) cases. In such cases, a warning is issued. This may be fixed in a future release. If an argument to an OpenCL kernel function is optimized away late in the compilation process, the compiler may fail to build or produce undefined results. This occurs when either an argument gets entirely optimized away or when part of an argument gets optimized away. Part of an argument can get optimized away if two (for 64-bit data types) or four (for all other types) consecutive components of an argument are not used where the first unused component is a multiple of 2 or 4. The string class in the C++ Wrapper API has been deprecated and its usage is not recommended. 5.2 Runtime The OpenCL runtime currently does not validate handles to OpenCL memory objects. On Windows, to prevent long programs from causing a dialog to be displayed indicating that the display driver has stopped responding, disable the Timeout Detection and Recovery (TDR) feature, which is trying to detect hangs in graphics hardware. To do this, use regedit.exe to create the following REG_DWORD entry in the registry, and set its value to 0: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\GraphicsDrivers\TdrLevel This avoids the constant polling by the driver and the kernel to prevent long work units from monopolizing the device. (To restore default functionality, set the TdrLevel to 3.) Note that Microsoft strongly discourages disabling this feature, and only recommends doing so for debugging purposes. Do so at your own risk. On Linux platforms, if a kernel deadlocks the GPU, the system becomes unresponsive for a few minutes, and both the X-window server and the application become defunct processes. The system must be rebooted in order to use the GPU again. If the clGetPlatformIDs() failed error is issued with a properly installed ICD while running 32-bit code on a 64-bit system, ensure that all necessary 32-bit libraries are installed. The specifics of this vary between Linux distributions; consult your OS documentation for more information. The libGLU.so library is known to trigger this problem, but there may be others, depending on the specific installation. In Linux for non-Southern_Islands platforms, the OpenCL runtime currently exposes less than the total amount of memory physically available on the card. In Windows and on Linux or Southern-Islands-based platforms, the OpenCL runtime reports the total amount of physical memory for boards with up to 2 GB. Developer Release Notes 3 of 4 Contact 4 of 4 Advanced Micro Devices, Inc. One AMD Place P.O. Box 3453 Sunnyvale, CA, 94088-3453 Phone: +1.408.749.4000 For AMD Accelerated Parallel Processing: The contents of this document are provided in connection with Advanced Micro Devices, Inc. (“AMD”) products. AMD makes no representations or warranties with respect to the accuracy or completeness of the contents of this publication and reserves the right to make changes to specifications and product descriptions at any time without notice. The information contained herein may be of a preliminary or advance nature and is subject to change without notice. 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Copyright and Trademarks © 2014 Advanced Micro Devices, Inc. All rights reserved. AMD, the AMD Arrow logo, ATI, the ATI logo, Radeon, FireStream, and combinations thereof are trademarks of Advanced Micro Devices, Inc. OpenCL and the OpenCL logo are trademarks of Apple Inc. used by permission by Khronos. Other names are for informational purposes only and may be trademarks of their respective owners. Developer Release Notes URL: developer.amd.com/appsdk Developing: developer.amd.com/ Forum: developer.amd.com/openclforum