# Release notes

We have attempted to document known bugs and limitations - in particular the [HIP Kernel Language](docs/markdown/hip_kernel_language.md) document uses the phrase "Under Development", and the [HIP Runtime API bug list](http://rocm-developer-tools.github.io/HIP/bug.html) lists known bugs. 


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## Revision History:

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Release: 1.4
Date: 2017.10.06
- Improvements to HIP event management
- Added new HIP_TRACE_API options
- Enabled device side assert support
- Several bug fixes including hipMallocArray, hipTexture fetch
- Support for RHEL/CentOS 7.4
- Updates to hipify-perl, hipify-clang and documentation


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Release: 1.3
Date: 2017.08.16
- hipcc now auto-detects amdgcn arch. No need to specify the arch when building for same system.
- HIP texture support
- Implemented __threadfence_support
- Improvements in HIP context management logic
- Bug fixes in several APIs including hipDeviceGetPCIBusId, hipEventDestroy, hipMemcpy2DAsync
- Updates to hipify-clang and documentation
- HIP development now fully open and on GitHub. Developers should submit pull requests.


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Release: 1.2
Date: 2017.06.29
- new APIs: hipMemcpy2DAsync, hipMallocPitch, hipHostMallocCoherent, hipHostMallocNonCoherent
- added support for building hipify-clang using clang 3.9
- hipify-clang updates for CUDA 8.0 runtime+driver support
- renamed hipify to hipify-perl
- initial implementation of hipify-cmakefile
- several documentation updates & bug fixes
- support for abort() function in device code


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Release: 1.0.17102
Date: 2017.03.07
- Lots of improvements to hipify-clang.
- Added HIP package config for cmake.
- Several bug fixes and documentation updates.


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Release: 1.0.17066
Date: 2017.02.11
- Improved support for math device functions.
- Added several half math device functions.
- Enabled support for CUDA 8.0 in hipify-clang.
- Lots of bug fixes and documentation updates.


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Release: 1.0.17015
Date: 2017.01.06
- Several improvements to the hipify-clang infrastructure.
- Refactored module and function APIs.
- HIP now defaults to linking against the shared runtime library.
- Documentation updates.


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Release: 1.0.16502
Date: 2016.12.13
- Added several fast math and packaged math instrincs
- Improved debug and profiler documentation
- Support for building and linking to HIP shared library
- Several improvements to hipify-clang
- Several bug fixes


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Release: 1.0.16461
Date: 2016.11.14
- Significant changes to the HIP Profiling APIs. Refer to the documentation for details
- Improvements to P2P support
- New API: hipDeviceGetByPCIBusId
- Several bug fixes in NV path
- hipModuleLaunch now works for multi-dim kernels


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Release:1.0
Date: 2016.11.8
- Initial implementation for FindHIP.cmake
- HIP library now installs as a static library by default
- Added support for HIP context and HIP module APIs
- Major changes to HIP signal & memory management implementation
- Support for complex data type and math functions
- clang-hipify is now known as hipify-clang
- Added several new HIP samples
- Preliminary support for new APIs: hipMemcpyToSymbol, hipDeviceGetLimit, hipRuntimeGetVersion
- Added support for async memcpy driver API (for example hipMemcpyHtoDAsync)
- Support for memory management device functions: malloc, free, memcpy & memset
- Removed deprecated HIP runtime header locations. Please include "hip/hip_runtime.h" instead of "hip_runtime.h". You can use `find . -type f -exec sed -i 's:#include "hip_runtime.h":#include "hip/hip_runtime.h":g' {} +` to replace all such references


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Release:0.92.00
Date: 2016.8.14
- hipLaunchKernel supports one-dimensional grid and/or block dims, without explicit cast to dim3 type (actually in 0.90.00)
- fp16 software support
- Support for Hawaii dGPUs using environment variable ROCM_TARGET=hawaii
- Support hipArray
- Improved profiler support
- Documentation updates
- Improvements to clang-hipify


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Release:0.90.00
Date: 2016.06.29
- Support dynamic shared memory allocations
- Min HCC compiler version is > 16186.
- Expanded math functions (device and host).  Document unsupported functions.
- hipFree with null pointer initializes runtime and returns success.
- Improve error code reporting on nvcc.
- Add hipPeekAtError for nvcc.


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Release:0.86.00
Date: 2016.06.06
- Add clang-hipify : clang-based hipify tool.  Improved parsing of source code, and automates 
  creation of hipLaunchParm variable.
- Implement memory register / unregister commands (hipHostRegister, hipHostUnregister)
- Add cross-linking support between G++ and HCC, in particular for interfaces that use
  standard C++ libraries (ie std::vectors, std::strings).  HIPCC now uses libstdc++ by default on the HCC
  compilation path.
- More samples including gpu-burn, SHOC, nbody, rtm.  See [HIP-Examples](https://github.com/ROCm-Developer-Tools/HIP-Examples)


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Release:0.84.01
Date: 2016.04.25
- Refactor HIP make and install system:
    - Move to CMake. Refer to the installation section in README.md for details.
    - Split source into multiple modular .cpp and .h files.
    - Create static library and link.
    - Set HIP_PATH to install.
- Make hipDevice and hipStream thread-safe.
    - Preferred hipStream usage is still to create new streams for each new thread, but it works even if you don;t.
- Improve automated platform detection: If AMD GPU is installed and detected by driver, default HIP_PLATFORM to hcc.
- HIP_TRACE_API now prints arguments to the HIP function (in addition to name of function).
- Deprecate hipDeviceGetProp (Replace with hipGetDeviceProp)
- Deprecate hipMallocHost (Replace with hipHostMalloc)
- Deprecate hipFreeHost (Replace with hipHostFree)
- The mixbench benchmark tool for measuring operational intensity now has a HIP target, in addition to CUDA and OpenCL.  Let the comparisons begin. :)    
See here for more : https://github.com/ekondis/mixbench.


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Release:0.82.00
Date: 2016.03.07
- Bump minimum required HCC workweek to 16074.
- Bump minimum required ROCK-Kernel-Driver and ROCR-Runtime to Developer Preview 2.
- Enable multi-GPU support.
  * Use hipSetDevice to select a device for subsequent kernel calls and memory allocations.
  * CUDA_VISIBLE_DEVICES / HIP_VISIBLE_DEVICE environment variable selects devices visible to the runtime.
- Support hipStreams – send sequences of copy and kernel commands to a device.
  * Asynchronous copies supported.
- Optimize memory copy operations.
- Support hipPointerGetAttribute – can determine if a pointer is host or device.
- Enable atomics to local memory.
- Support for LC Direct-To-ISA path.
- Improved free memory reporting.
  * hipMemGetInfo (report full memory used in current process).
  * hipDeviceReset (deletes all memory allocated by current process).


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Release:0.80.01
Date: 2016.02.18
- Improve reporting and support for device-side math functions.
- Update Runtime Documentation.
- Improve implementations of cross-lane operations (_ballot, _any, _all).
- Provide shuffle intrinsics (performance optimization in-progress).
- Support hipDeviceAttribute for querying "one-shot" device attributes, as an alternative to hipGetDeviceProperties.


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Release:0.80.00
Date: 2016.01.25

Initial release with GPUOpen Launch.