56 lines
1.2 KiB
Markdown
56 lines
1.2 KiB
Markdown
# The Bandwidth Benchmark
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This is a collection of simple streaming kernels for teaching purposes.
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It is heavily inspired by John McCalpin's https://www.cs.virginia.edu/stream/.
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It contains the following streaming kernels with corresponding data access pattern (Notation: S - store, L - load, WA - write allocate):
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* init: S1
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* sum: L1
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* copy: L1, S1, WA
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* update: L1, S1
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* triad: L2, S1, WA
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* daxpy: L2, S1
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* striad: L3, S1, WA
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* sdaxpy: L3, S1
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## Build
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1. Configure the toolchain to use in the `Makefile`:
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```
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TAG = GCC # Supported GCC, CLANG, ICC
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```
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2. Review the flags for toolchain in the corresponding included file, e.g. `include_GCC.mk`. OpenMP is disabled per default, you can enable it by uncommenting the OpenMP flag:
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```
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OPENMP = -fopenmp
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```
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3. Build with:
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```
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make
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```
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You can build multiple toolchains in the same directory, but notice that the Makefile is only acting on the one currently set.
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Intermediate build results are located in the `<TOOLCHAIN>` directory.
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4. Clean up with:
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```
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make clean
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```
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to clean intermediate build results.
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```
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make distclean
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```
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to clean intermediate build results and binary.
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5. (Optional) Generate assembler:
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```
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make asm
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```
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The assembler files will also be located in the `<TOOLCHAIN>` directory.
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## Usage
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