Make rocBLAS build with pre-ROCm 1.9 compilers work

A small incremental release to make rocBLAS v14.2.5 buildable with pre-ROCm 1.9 compilers.

V4.5.0 Performance improvements, Bug fixes, add hpa_hgemm

Features

• add support for vega20
• add hpa_hgemm assembly and source
• tuning for sgemm and hgemm
• bug fixes for sgemm and hgemm small sizes
• use SGPR for alpha and beta

V4.4.0 Performance Improvements and Bug Fixes

Features

• Support Global Split U for half and double
• Support Local Split U for half and hpa
• Fix beta for hpa
• Add AssertFree0ElementMultiple requirement and runtime launch check
• Intercept solution selection logic and call hgemm HIP kernel when summation index or first free index is odd
• correct reordered_schedules fallback for hgemm
• disable PreciseBoundsCheck
• update rocblas_hgemm_asm_full.yaml to call source with VW=2 for m,n,k <= 32
• update rocblas_hgemm_asm_full.yaml to call source with VW=1 for m,n,k == 1
• Use alternating sign in random init for half
• use hipGetDevice in place of hipCtxGetDevice
• use _Float16 in place of __fp16
• add device to llvm_fma_v2f16

V4.3.0 Performance Improvements and Bug Fixes

Features

• source kernels for k<=128 to fix stride_b=0, batch_count > 1
• __hfma no longer needed
• Modify default handling for LdsPad, if -1, only pad the TLU=0 cases
• Combine second-to-last MAC iter into common loop
• Reset local pointers at iteration based on PrefetchLocalRead
• Multi-thread the kernel writing, provides 3X-4X speedup for build
• Support -1 default LdsPad (matches VectorWidth)
• refactor .yaml files
• Optimize overhang calculation
• use glvw in overhang calculation
• Enable CodeFromFiles
• Feature detect invalid kernel
• Change order to better match write batching reclaim algorithm
• Allocate LoopCounters in middle of SGPRs so tmp sgpr recovery works

V4.2.0 Performance improvements

Features

• Fractional global capability
• Additional ResNet sizes
• Round up for half vgprs
• Initial code for PersistentKernel (disabled)
• Feature inner unroll2
• Enable BufferStore and buffer_atomic_cmpswap for GSU>1

V4.1.1 Performance improvements

Features

• Support LSHL_ADD
• Vectorize the store-C path
• Enable DirectToLds for half
• Fix sync with DirectToLds when PrefetchLocalRead=0
• Optimize solution merging using lookup
• Align MAC blocks when using half datatype
• Add mi25 Device 6860 to vega10
• Train for DataInitTypeBeta: 0
• Add ResNet1x1 to Exact sizes

v4.0.2 Performance improvements and initial mixed precision support

Features

• Initial mixed precision support
• Performance Improvements
  • Use Buffer Load for global reads (saves registers, reduce instruction count)
  • Support DirectToLds (save registers, reduce latency)
  • Reduce global read offset vgprs (save registers)
  • Use Buffer Store for global stores (reduce instruction count)
  • Optimize global store address calculaton (reduce instruction count)
  • Support LdsPad to reduce LDS write bank conflicts
• Improve debug for assembly path (asserts, state dump, init LDS)

v3.6.0 Hgemm and thread safety fix

Features:

• Hgemm
  • assembly for gfx900, source for gfx803
• Bug fixes:
  • Additional thread safety fix for solution lookup and module storage

v3.5.1 Hgemm Assembly

Features:

• Hgemm has been implemented in assembly.
  • For gfx900 only.
  • Does not support matrix dimensions M = 1 or N = 1.
  • GlobalSplitU and LocalSplitU have not yet been implemented for it.

Bug fixes:

• fix thread safety for solution lookup and assembly module storage.

v3.4.0 Dgemm Assembly

Features:

• Dgemm has been implemented in assembly.
  • GlobalSplitU and LocalSplitU have not yet been implemented for it.
  • 64x64x8 with prefetching is fastest kernel configuration.