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* GH-2368 Adding a basic glossary GH-2368 Minor edits GH-2368 Adding missing READMEs and standardization. resolving readme updates GH-2368 Minor improvements to documentation. Improving some readmes. Further improvement for readmes. Cleaned up the documentation in 'client_example' (#2468) Update for PR Update ACRONYMS.md to remove trivial terms Update ACRONYMS.md to provide detailed explanations for BF16 and BF8 formats Apply suggestion from @spolifroni-amd Co-authored-by: spolifroni-amd <Sandra.Polifroni@amd.com> Apply suggestion from @spolifroni-amd Co-authored-by: spolifroni-amd <Sandra.Polifroni@amd.com> Update README.md to clarify CK Tile API description and remove outdated references to the Tile Engine. revise 37_transpose readme revise 36_copy readme Remove references to the Tile Engine in README files for 19_gemm_multi_d and 35_batched_transpose, and update distribution links for clarity. Remove references to the Tile Engine in multiple README files and update distribution links for consistency and clarity. Remove references to the Tile Engine in README files across multiple examples * GH-2368 Adding a basic glossary GH-2368 Minor edits GH-2368 Adding missing READMEs and standardization. resolving readme updates GH-2368 Minor improvements to documentation. Improving some readmes. Further improvement for readmes. Cleaned up the documentation in 'client_example' (#2468) Update for PR Update ACRONYMS.md to remove trivial terms Update ACRONYMS.md to provide detailed explanations for BF16 and BF8 formats Apply suggestion from @spolifroni-amd Co-authored-by: spolifroni-amd <Sandra.Polifroni@amd.com> Apply suggestion from @spolifroni-amd Co-authored-by: spolifroni-amd <Sandra.Polifroni@amd.com> Update README.md to clarify CK Tile API description and remove outdated references to the Tile Engine. revise 37_transpose readme revise 36_copy readme Remove references to the Tile Engine in README files for 19_gemm_multi_d and 35_batched_transpose, and update distribution links for clarity. Remove references to the Tile Engine in multiple README files and update distribution links for consistency and clarity. Remove references to the Tile Engine in README files across multiple examples Refine README files by removing outdated references to the Tile Engine * Updates based on PR feedback 1 * Updates based on PR feedback 2 * Updates based on PR feedback 3 * Updates based on PR feedback 4 * Updates based on PR feedback 5 * Updates based on PR feedback 6 * Updates based on PR feedback 7 * Updates based on PR feedback 8 * Content Modification of CK Tile Example * Modify the ck_tile gemm config --------- Co-authored-by: AviralGoelAMD <aviral.goel@amd.com> Co-authored-by: ThomasNing <thomas.ning@amd.com>
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Client Example: Grouped GEMM with FastGELU Activation
Theory
This client example demonstrates grouped GEMM fused with FastGELU activation. Grouped GEMM performs multiple independent GEMM operations (with potentially different shapes) in a single kernel launch, and FastGELU is a fast approximation of the GELU activation used in transformers and MLPs.
Mathematical Formulation:
For G groups, each with its own A_g, B_g:
- GEMM:
Y_g = A_g \times B_g - FastGELU:
E_g = \text{FastGELU}(Y_g)
FastGELU is defined as:
\text{FastGELU}(x) = x \cdot \sigma(1.702 \cdot x)
where \sigma is the sigmoid function.
Algorithmic Background:
- Each group can have different matrix sizes and strides.
- The kernel launches a grid covering all groups, with each block assigned to a group.
- FastGELU is applied in the epilogue for each group.
How to Run
Prerequisites
Please follow the instructions in the main Build Guide section as a prerequisite to building and running this example.
Build and run
cd composable_kernel/client_example/17_grouped_gemm_fastgelu
mkdir build && cd build
cmake -DCMAKE_CXX_COMPILER=/opt/rocm/bin/hipcc ..
make -j
# Example run
./grouped_gemm_fastgelu
Source Code Structure
Directory Layout
client_example/17_grouped_gemm_fastgelu/
├── grouped_gemm_fastgelu.cpp # Main client example: grouped GEMM + FastGELU
├── CMakeLists.txt # Build configuration for the example
Key Functions
- main() (in
grouped_gemm_fastgelu.cpp):
Sets up input matrices for each group, configures GEMM and epilogue parameters, launches the grouped kernel, and verifies the result. - Grouped GEMM kernel invocation:
Uses the Composable Kernel device API to launch grouped GEMM with FastGELU activation.
Additional Details
- Supports multiple groups with different matrix shapes.
- Example parameters can be adjusted in the source for different workloads.
Related Examples
- 15_grouped_gemm: Grouped GEMM in the main example directory
- 04_gemm_add_add_fastgelu: GEMM with FastGELU fusion