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38 lines
1.7 KiB
ReStructuredText
38 lines
1.7 KiB
ReStructuredText
.. meta::
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:description: rocBLAS documentation and API reference library
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:keywords: rocBLAS, ROCm, API, Linear Algebra, documentation
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.. _what-is-rocblas:
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********************************************************************
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What is rocBLAS?
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********************************************************************
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rocBLAS is the AMD library for Basic Linear Algebra Subprograms (BLAS) on the :doc:`ROCm platform <rocm:index>`.
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It is implemented in the :doc:`HIP C++ <hip:index>` and optimized for AMD GPUs.
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For more detailed component information, see :doc:`rocBLAS design notes <../conceptual/rocblas-design-notes>`.
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rocBLAS aims to provide the following:
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* Functionality similar to legacy BLAS, adapted to run on AMD GPUs
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* A high-performance, robust implementation
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rocBLAS is written in HIP C++ (using C++17 features) and it uses the HIP runtime.
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The rocBLAS API is a thin C99 API that uses the hourglass pattern. It contains:
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* :ref:`level-1`, :ref:`level-2`, and :ref:`level-3` with batched and strided_batched versions
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* Extensions to legacy BLAS, including functions for mixed precision
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* Auxiliary functions
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* Device memory functions
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.. note::
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* The official rocBLAS API is the C99 API defined in ``rocblas.h``. Therefore, the use of any other
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public symbols is discouraged. Other C/C++ interfaces might not follow a deprecation model and
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could change without warning from one release to the next.
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* The rocBLAS array storage format is column major and one-based.
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This is to maintain compatibility with the legacy BLAS Fortran code.
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* rocBLAS calls the AMD :doc:`Tensile <tensile:src/index>` and :doc:`hipBLASLt <hipblaslt:index>` libraries
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for Level-3 GEMMs (matrix matrix multiplication).
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