Provide requirements that fix hf MPT 7b instuct (#2194)
Summary:
The model `hf MPT 7b instruct `was currently failing as it was missing the installation of `einops`.
`ImportError: This modeling file requires the following packages that were not found in your environment: einops. Run `pip install einops``
This PR adds a requirements file and the function to install it. so that the model runs:
`python3 benchmark/run.py hf_MPT_7b_instruct -d cpu -t eval --metrics model_flops,cpu_peak_mem,ttfb
`
```
Module FLOP % Total
----------- --------- ---------
Global 6946.036B 100.00%
- aten.mm 6808.597B 98.02%
- aten.bmm 137.439B 1.98%
CPU Wall Time per batch: 8572.018 milliseconds
CPU Wall Time: 8572.018 milliseconds
Time to first batch: 93223.4272 ms
Model Flops: 0.8103 TFLOPs per second
CPU Peak Memory: 26.3457 GB
```
Pull Request resolved: https://github.com/pytorch/benchmark/pull/2194
Reviewed By: aaronenyeshi
Differential Revision: D54884951
Pulled By: xuzhao9
fbshipit-source-id: 58f2cde95f0d1487f986e9f79ebe2e3178731fbf
