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martin-frbg merged 1 commit into from
Nov 2, 2026
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Update developer documentation #6217

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20 changes: 13 additions & 7 deletions docs/developers.md
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Original file line number Diff line number Diff line change
Expand Up @@ -6,35 +6,38 @@
OpenBLAS/
├── benchmark Benchmark codes for BLAS
├── cmake CMakefiles
├── ctest Test codes for CBLAS interfaces
├── driver Implemented in C
│   ├── level2
│   ├── level3
├── ctest Test codes for CBLAS interfaces, implemented in C (copied from the Reference BLAS)
├── driver
│   ├── level2 Driver functions that handle copying, rearranging or rescaling data as well
│   ├── level3 as splitting workloads across multiple threads
│   ├── mapper
│   └── others Memory management, threading, etc
├── exports Generate shared library
├── interface Implement BLAS and CBLAS interfaces (calling driver or kernel)
│   ├── lapack
│   └── netlib
├── kernel Optimized assembly kernels for CPU architectures
├── kernel Optimized assembly (or C intrinsics) kernels for CPU architectures
│   ├── alpha Original GotoBLAS kernels for DEC Alpha
│   ├── arm ARMV5,V6,V7 kernels (including generic C codes used by other architectures)
│   ├── arm64 ARMV8
│   ├── arm64 ARMV8, V9
│   ├── generic General kernel codes written in plain C, parts used by many architectures.
│   ├── ia64 Original GotoBLAS kernels for Intel Itanium
│   ├── loongarch64
│ ├── mips
│   ├── mips64
│   ├── power
| ├── riscv64
| ├── simd Common code for Universal Intrinsics, used by some x86_64 and arm64 kernels
│   ├── sparc
│   ├── wasm
│   ├── x86
│ ├── x86_64
│   └── zarch
├── lapack Optimized LAPACK codes (replacing those in regular LAPACK)
│   ├── getf2
│   ├── getrf
│   ├── getrs
| ├── laed3
│   ├── laswp
│   ├── lauu2
│   ├── lauum
Expand All @@ -46,8 +49,9 @@ OpenBLAS/
├── lapack-netlib LAPACK codes from netlib reference implementation
├── reference BLAS Fortran reference implementation (unused)
├── relapack Elmar Peise's recursive LAPACK (implemented on top of regular LAPACK)
├── test Test codes for BLAS
├── test Test codes for BLAS, copied from the Reference BLAS
└── utest Regression test
└── utest_ext Tests for the BLAS Extensions not covered by the other tests

```

Expand Down Expand Up @@ -149,6 +153,8 @@ in a number of places. For example:
* [MatlabJuliaMatrixOperationsBenchmark](https://github.com/RoyiAvital/MatlabJuliaMatrixOperationsBenchmark)
(various matrix operations in Julia and Matlab)
* [mmperf/mmperf](https://github.com/mmperf/mmperf/) (single-core matrix multiplication)
* [BLAS Microbenchmark](https://github.com/MathieuCAISSA/blas-microbenchmark) Suite covering all BLAS routines in all standard precisions,
capable of comparing all BLAS implementations supported by FlexiBLAS, including relative performance graphs


## Adding autodetection support for a new revision or variant of a supported CPU
Expand Down
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