bench.md

+## Benchmark
+Give an overview of the solver's performance.  
+Version [v1.0.0](https://gitlab.uliege.be/am-dept/dartflo/-/tags/v1.0.0).  
+Reference performance page is available [here](https://gitlab.uliege.be/am-dept/waves/-/wikis/flow_bench). Some results are also given in the last appendix of this [PhD thesis](http://hdl.handle.net/2268/251906).
+
+*Notes*:
+- GMRES uses a tolerance of 1e-5 and 50 restarts, and is preconditioned with an incomplete (fill-in factor of 2 and drop tolerance of 1e-6) LU matrix.
+
+List of machines:  
+
+| Id | name     | operating system  | machine type | computing unit (frequency) | memory | compiler  |  
+|:--:|:--------:|:-----------------:|:------------:|:--------------------------:|:------:|:---------:|  
+| 01 | -        | ubuntu20          | virtual      | i7-7700HQ (2.8Ghz)         | 8Gb    | GNU gcc   |  
+| 02 | -        | windows10/msys2   | laptop       | i7-7700HQ (2.8Ghz)         | 16Gb   | GNU MinGW |
+
+### Onera M6 (dart/benchmark/onera.py)
+The Onera M6 wing is the standard test/benchmark case for steady transonic flow computations.  
+Mesh size: 602199 volume elements and 146744 nodes.
+
+## Results
+**NOT UP TO DATE**  
+| Machine id | BLAS      | Solver  | iterations | threads | CPU_user     | CPU_real    |
+|:----------:|:---------:|:-------:|:----------:|:-------:|:------------:|:-----------:|
+| 01         | Intel MKL | Pardiso | 16         | 1 (4)   | 235 (282) s  | 243 (102) s |
+| 02         | Openblas  | GMRES   | 16         | 1 (4)   | 317 (370) s  | 324 (151) s |