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Update build instructions for affinity GPU backend #266

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Sep 22, 2025
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Update build instructions for affinity GPU backend #266

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8 changes: 4 additions & 4 deletions docs/running/slurm.md
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Expand Up @@ -128,8 +128,8 @@ $ uenv start prgenv-gnu/24.11:v2 --view=default #(1)
$ git clone https://github.com/bcumming/affinity.git
$ cd affinity; mkdir build; cd build;
$ CC=gcc CXX=g++ cmake .. #(2)
$ CC=gcc CXX=g++ cmake .. -DAFFINITY_GPU=cuda #(3)
$ CC=gcc CXX=g++ cmake .. -DAFFINITY_GPU=rocm #(4)
$ CC=gcc CXX=g++ cmake .. -DAFFINITY_GPU_BACKEND=cuda #(3)
$ CC=gcc CXX=g++ cmake .. -DAFFINITY_GPU_BACKEND=rocm #(4)
```

1. Affinity can be built using [`prgenv-gnu`][ref-uenv-prgenv-gnu] on all clusters.
Expand All @@ -144,8 +144,8 @@ The build generates the following executables:

* `affinity.omp`: tests thread affinity with no MPI (always built).
* `affinity.mpi`: tests thread affinity with MPI (built by default).
* `affinity.cuda`: tests thread and GPU affinity with MPI (built with `-DAFFINITY_GPU=cuda`).
* `affinity.rocm`: tests thread and GPU affinity with MPI (built with `-DAFFINITY_GPU=rocm`).
* `affinity.cuda`: tests thread and GPU affinity with MPI (built with `-DAFFINITY_GPU_BACKEND=cuda`).
* `affinity.rocm`: tests thread and GPU affinity with MPI (built with `-DAFFINITY_GPU_BACKEND=rocm`).

??? example "Testing CPU affinity"
Test CPU affinity (this can be used on both CPU and GPU enabled nodes).
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