# Low-scaling GW performance test for a graphene nanoribbon

## Description

This benchmark is a low-scaling G0W0 calculation of a graphene nanoribbon.

## Benchmark Requirements

To run the benchmark, CP2K needs to be compiled with libint support (`-D__LIBINT`).

## Description of Input Files

- [`GW.inp`](GW.inp): input for measuring the low-scaling GW time

## Additional files

- [`nanoribbon.xyz`](nanoribbon.xyz): geometry in xyz format

## Results on Piz Dora, CSCS

| Input File |             Configuration | Total Number of Cores | Runtime \[s\] |
| ---------- | ------------------------: | --------------------: | ------------: |
| GW.inp     | 16 nodes x 36 MPI x 1 OMP |                   576 |           305 |

The timings have been obtained on CRAY-XC40 (PizDora@CSCS)
