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  • Paralellization scheme of time dependent codes

Paralellization scheme of time dependent codes · Changes

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Update Paralellization scheme of time dependent codes authored Jan 02, 2021 by Gabriel Wlazłowski's avatar Gabriel Wlazłowski
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Paralellization-scheme-of-time-dependent-codes.md
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......@@ -7,7 +7,7 @@ Time-dependent codes evolve quasiparticle wave functions (qpwfs) which number de
```
# INIT2: nwf=46032 wave-functions to scatter
```
Quasiparticle wave functions are distributed uniformly among `np` MPI process. For example if above example is executed on `np=32` then each process is responsible for evolving `nwfip = 46032/16 = 2877`. Qpwfs are evolved by GPUs. It requires that for each MPI process a GPU must be assigned. Suppose that the code is executed on `4 nodes`, and each node is equipped with `4 GPUs`. Consider the following execution command:
Quasiparticle wave functions are distributed uniformly among `np` MPI process. For example if above example is executed on `np=16` then each process is responsible for evolving `nwfip = 46032/16 = 2877`. Qpwfs are evolved by GPUs. It requires that for each MPI process a GPU must be assigned. Suppose that the code is executed on `4 nodes`, and each node is equipped with `4 GPUs`. Consider the following execution command:
```bash
mpiexec -ppn 4 -np 16 ./td-wslda-2d input.txt
```
......
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