Docker build fails on Apple Silicon

[eu9ene]

https://gist.github.com/mathjazz/46ca76c0136e7fd17ba9c3aba48951d6

[eu9ene]

it is MBP with Apple Silicon, can we skip using intel MKL for Marian? https://marian-nmt.github.io/quickstart/

[andrenatal]

I believe the option would be using openblas but @abhi-agg should know exactly what's required.

[eu9ene]

We can try but

Intel MKL is strongly recommended as it is faster

https://marian-nmt.github.io/docs/#cpu-version

[andrenatal]

Is there another option?

[abhi-agg]

We can use OpenBlas instead of Intel MKL. It supports both intel and arm achitecture (see here).

We can do a bit more exploration to see how this can fit in docker and can work for both intel and arm architecture with the single docker image. But this is uncharted territory as we haven't used openblas ever and we don't know whether it works out of box in marian (we may see few surprises here).

But we should understand the use case first to start any effort on this.

[eu9ene]

I think it makes sense to migrate to OpenBLAS taking into account Intel MKL licensing like @abhi-agg pointed out. We can benchmark performance using the load tests and see whether it is significantly slower.