rocBLAS 4.3.0 for ROCm 6.3.0

Added

• Level 3 and EX functions have an additional ILP64 API for both C and FORTRAN (_64 name suffix) with int64_t function arguments

Changed

• amdclang is used as the default compiler instead of hipcc
• Internal performance scripts use amd-smi instead of the deprecated rocm-smi

Optimized

• Improved performance of Level 2 gbmv
• Improved performance of Level 2 gemv for float and double precisions for problem sizes (TransA == N && m==n && m % 128 == 0) measured on a gfx942 GPU

Resolved issues

• Fixed stbsv_strided_batched_64 Fortran binding

Upcoming changes

• rocblas_Xgemm_kernel_name APIs are deprecated

rocBLAS 4.2.4 for ROCm 6.2.4

Additions

• GFX1151 Support

rocBLAS 4.2.1 for ROCm 6.2.2

rocBLAS code for ROCm 6.2.2 did not change. The library was rebuilt for the updated ROCm 6.2.2 stack.

rocBLAS 4.2.1 for ROCm 6.2.1

Removals

• Remove Device_Memory_Allocation.pdf link in documentation

Fixes

• Fixed error/warn message during rocblas_set_stream() call

rocBLAS 4.2.0 for ROCm 6.2.0

Additions

• Level 2 functions and level 3 trsm have additional ILP64 API for both C and FORTRAN (_64 name suffix) with int64_t function arguments
• Cache flush timing for gemm_batched_ex, gemm_strided_batched_ex, axpy
• Benchmark class for common timing code
• An environment variable "ROCBLAS_DEFAULT_ATOMICS_MODE" to set default atomics mode during creation of 'rocblas_handle'
• Extended dot_ex to support single-precision (fp32_r) input and double-precision (fp64_r) output and compute types

Optimizations

• Improved performance of Level 1 dot_batched and dot_strided_batched for all precisions. Performance enhanced by 6 times for bigger problem sizes measured on MI210 GPU

Changes

• Linux AOCL dependency updated to release 4.2 gcc build
• Windows vcpkg dependencies updated to release 2024.02.14
• Increased default device workspace from 32 to 128 MiB for architecture gfx9xx with xx >= 40

Deprecations

• rocblas_gemm_ex3, gemm_batched_ex3 and gemm_strided_batched_ex3 are deprecated and will be removed in the next major release of rocBLAS. Please refer to hipBLASLt for future 8 bit float usage https://github.com/ROCm/hipBLASLt

rocBLAS 4.1.2 for ROCm 6.1.2

Fixes

• Fixes BF16 TT get_solutions

Optimizations

• Tune gfx942 BBS TN, TT

rocBLAS 4.1.0 for ROCm 6.1.1

rocBLAS code for ROCm 6.1.1 did not change. The library was rebuilt for the updated ROCm 6.1.1 stack.

rocBLAS 4.1.0 for ROCm 6.1.0

Additions

• Level 1 and Level 1 Extension functions have additional ILP64 API for both C and FORTRAN (_64 name suffix) with int64_t function arguments.
• Cache flush timing for gemm_ex.

Changes

• Some Level 2 function argument names have changed 'm' to 'n' to match legacy BLAS, there was no change in implementation.
• Standardized the use of non-blocking streams for copying results from device to host.

Fixes

• Fixed host-pointer mode reductions for non-blocking streams.

rocBLAS 4.0.0 for ROCm 6.0.2

rocBLAS code for ROCm 6.0.2 did not change. The library was rebuilt for the updated ROCm 6.0.2 stack.

rocBLAS 4.0.0 for ROCm 6.0.0

Added

• Addition of beta API rocblas_gemm_batched_ex3 and rocblas_gemm_strided_batched_ex3
• Added input/output type f16_r/bf16_r and execution type f32_r support for Level 2 gemv_batched and gemv_strided_batched
• Added rocblas_status_excluded_from_build to be used when calling functions which require Tensile when using rocBLAS built without Tensile
• Added system for async kernel launches setting a failure rocblas_status based on hipPeekAtLastError discrepancy

Optimized

• Trsm performance for small sizes m < 32 && n < 32

Deprecated

• In a future release atomic operations will be disabled by default so results will be repeatable. Atomic operations can always be enabled or disabled using the function rocblas_set_atomics_mode. Enabling atomic operations can improve performance.

Removed

• rocblas_gemm_ext2 API function is removed
• in-place trmm API from Legacy BLAS is removed. It is replaced by an API that supports both in-place and out-of-place trmm
• int8x4 support is removed. int8 support is unchanged
• The #define STDC_WANT_IEC_60559_TYPES_EXT has been removed from rocblas-types.h. Users who want ISO/IEC TS 18661-3:2015 functionality must define STDC_WANT_IEC_60559_TYPES_EXT before including float.h, math.h, and rocblas.h
• The default build removes device code for gfx803 architecture from the fat binary

Fixed

• Make offset calculations for rocBLAS functions 64 bit safe. Fixes for very large leading dimension or increment potentially causing overflow:
  • Level2: gbmv, gemv, hbmv, sbmv, spmv, tbmv, tpmv, tbsv, tpsv
• Lazy loading to support heterogeneous architecture setup and load appropriate tensile library files based on the device's architecture
• Guard against no-op kernel launches resulting in potential hipGetLastError

Changed

• Default verbosity of rocblas-test reduced. To see all tests set environment variable GTEST_LISTENER=PASS_LINE_IN_LOG