# Change Log for rocFFT Full documentation for rocFFT is available at [rocfft.readthedocs.io](https://rocfft.readthedocs.io/en/latest/). ## rocFFT 1.0.16 for ROCm 5.1.0 ### Changed - Supported unaligned tile dimension for SBRC_2D kernels. - Improved (more RAII) test and benchmark infrastructure. - Enabled runtime compilation of length-2304 FFT kernel during plan creation. ### Optimizations - Optimized more large 1D cases by using L1D_CC plan. - Optimized 3D 200^3 C2R case. - Optimized 1D 2^30 double precision on MI200. ### Fixed - Fixed correctness of some R2C transforms with unusual strides. ### Removed - The hipFFT API (header) has been removed from after a long deprecation period. Please use the [hipFFT](https://github.com/ROCmSoftwarePlatform/hipFFT) package/repository to obtain the hipFFT API. ## rocFFT 1.0.15 for ROCm 5.0.0 ### Changed - Enabled runtime compilation of single FFT kernels > length 1024. - Re-aligned split device library into 4 roughly equal libraries. - Implemented the FuseShim framework to replace the original OptimizePlan - Implemented the generic buffer-assignment framework. The buffer assignment is no longer performed by each node. We designed a generic algorithm to test and pick the best assignment path. With the help of FuseShim, we can achieve more kernel-fusions as possible. - Do not read the imaginary part of the DC and Nyquist modes for even-length complex-to-real transforms. ### Optimizations - Optimized twiddle-conjugation; complex-to-complex inverse transforms should have similar performance to foward transforms now. - Improved performance of single-kernel small 2D transforms. ## rocFFT 1.0.14 for ROCm 4.5.0 ### Optimizations - Optimized SBCC kernels of length 52, 60, 72, 80, 84, 96, 104, 108, 112, 160, 168, 208, 216, 224, 240 with new kernel generator. ### Added - Added support for Windows 10 as a build target. ### Changed - Packaging split into a runtime package called rocfft and a development package called rocfft-devel. The development package depends on runtime. The runtime package suggests the development package for all supported OSes except CentOS 7 to aid in the transition. The suggests feature in packaging is introduced as a deprecated feature and will be removed in a future rocm release. ### Fixed - Fixed a few validation failures of even-length R2C inplace. 2D, 3D cubics sizes such as 100^2 (or ^3), 200^2 (or ^3), 256^2 (or ^3)...etc. We don't combine the three kernels (stockham-r2c-transpose). We only combine two kernels (r2c-transpose) instead. ### Changed - Split 2D device code into separate libraries. ## rocFFT 1.0.13 for ROCm 4.4.0 ### Optimizations - Improved many plans by removing unnecessary transpose steps. - Optimized scheme selection for 3D problems. - Imposed less restrictions on 3D_BLOCK_RC selection. More problems can use 3D_BLOCK_RC and have some performance gain. - Enabled 3D_RC. Some 3D problems with SBCC-supported z-dim can use less kernels and get benefit. - Force --length 336 336 56 (dp) use faster 3D_RC to avoid it from being skipped by conservative threshold test. - Optimized some even-length R2C/C2R cases by doing more operations in-place and combining pre/post processing into Stockham kernels. - Added radix-17. ### Added - Added new kernel generator for select fused-2D transforms. ### Fixed - Improved large 1D transform decompositions. ## rocFFT 1.0.12 for ROCm 4.3.0 ### Changed Re-split device code into single-precision, double-precision, and miscellaneous kernels. ### Fixed - Fixed potential crashes in double-precision planar->planar transpose. - Fixed potential crashes in 3D transforms with unusual strides, for SBCC-optimized sizes. - Improved buffer placement logic. ### Added - Added new kernel generator for select lengths. New kernels have improved performance. - Added public `rocfft_execution_info_set_load_callback` and `rocfft_execution_info_set_store_callback` API functions to allow executing extra logic when loading/storing data from/to global memory during a transform. ### Removed - Removed R2C pair schemes and kernels. ### Optimizations - Optimized 2D/3D R2C 100 and 1D Z2Z 2500. - Reduced number of kernels for 2D/3D sizes where higher dimension is 64, 128, 256. ### Fixed - Fixed potential crashes in 3D transforms with unusual strides, for SBCC-optimized sizes. ## rocFFT 1.0.11 for ROCm 4.2.0 ### Changed Move device code into main library. ### Optimizations - Improved performance for single precision kernels exercising all except radix-2/7 butterfly ops. - Minor optimization for C2R 3D 100, 200 cube sizes. - Optimized some C2C/R2C 3D 64, 81, 100, 128, 200, 256 rectangular sizes. - When factoring, test to see if remaining length is explicitly supported. - Explicitly add radix-7 lengths 14, 21, and 224 to list of supported lengths. - Optimized R2C 2D/3D 128, 200, 256 cube sizes. ### Fixed - Fixed potential crashes in small 3D transforms with unusual strides. (https://github.com/ROCmSoftwarePlatform/rocFFT/issues/311) - Fixed potential crashes when executing transforms on multiple devices. (https://github.com/ROCmSoftwarePlatform/rocFFT/issues/310) ## rocFFT 1.0.10 for ROCm 4.1.0 ### Added - Explicitly specify MAX_THREADS_PER_BLOCK through _\_launch\_bounds\_ for all kernels. - Switch to new syntax for specifying AMD GPU architecture names and features. ### Optimizations - Optimized C2C/R2C 3D 64, 81, 100, 128, 200, 256 cube sizes. - Improved performance of the standalone out-of-place transpose kernel. - Optimized 1D length 40000 C2C case. - Enabled radix-7 for size 336. - New radix-11 and radix-13 kernels; used in length 11 and 13 (and some of their multiples) transforms. ### Changed - rocFFT now automatically allocates a work buffer if the plan requires one but none is provided. - An explicit `rocfft_status_invalid_work_buffer` error is now returned when a work buffer of insufficient size is provided. - Updated online documentation. - Updated debian package name version with separated '_'. - Adjusted accuracy test tolerances and how they are compared. ### Fixed - Fixed 4x4x8192 accuracy failure. ## rocFFT 1.0.8 for ROCm 3.10.0 ### Optimizations - Optimized 1D length 10000 C2C case. ### Changed - Added BUILD_CLIENTS_ALL CMake option. ### Fixed - Fixed correctness of SBCC/SBRC kernels with non-unit strides. - Fixed fused C2R kernel when a Bluestein transform follows it. ## rocFFT 1.0.7 for ROCm 3.9.0 ### Optimizations - New R2C and C2R fused kernels to combine pre/post processing steps with transpose. - Enabled diagonal transpose for 1D and 2D power-of-2 cases. - New single kernels for small power-of-2, 3, 5 sizes. - Added more radix-7 kernels. ### Changed - Explicitly disable XNACK and SRAM-ECC features on AMDGPU hardware. ### Fixed - Fixed 2D C2R transform with length 1 on one dimension. - Fixed potential thread unsafety in logging. ## rocFFT 1.0.6 for ROCm 3.8.0 ### Optimizations - Improved performance of 1D batch-paired R2C transforms of odd length. - Added some radix-7 kernels. - Improved performance for 1D length 6561, 10000. - Improved performance for certain 2D transform sizes. ### Changed - Allow static library build with BUILD_SHARED_LIBS=OFF CMake option. - Updated googletest dependency to version 1.10. ### Fixed - Fixed correctness of certain large 2D sizes. ## rocFFT 1.0.5 for ROCM 3.7.0 ### Optimizations - Optimized C2C power-of-2 middle sizes. ### Changed - Parallelized work in unit tests and eliminate duplicate cases. ### Fixed - Fixed correctness of certain large 1D, and 2D power-of-3, 5 sizes. - Fixed incorrect buffer assignment for some even-length R2C transforms. - Fixed `` inclusion on C compilers. - Fixed incorrect results on non-unit strides with SBCC/SBRC kernels.