[SCI] inquiry about models compilation with varying bit lengths in Athos using SCI backend

[tanjina12]

Hi,

I am new to this area of research.

I have a couple of questions:

1. Is it possible to compile the models (e.g., ResNet50) with varying bit lengths in the Networks directory of Athos, using SCI as the backend?
2. Also, I have a question that might sound silly: while compiling a model using Athos the ‘CompileSampleNetworks.py’ script sets the bit length to 41 for SCI. Could you please explain why this specific bit length is necessary?

I greatly appreciate your kind assistance in this matter.

[xingpz2008]

For the first question, EzPC project has introduced protocols like signed extension and truncation to support non-uniform bitlength, which were integrated in SCI. You may refer to paper Cryptflow2, SIRNN for more details.

[tanjina12]

@xingpz2008, Thank you so much for your response. I will check the suggested papers for details. Could you please explain the second question?

Thanks in advance.

[xingpz2008]

@xingpz2008, Thank you so much for your response. I will check the suggested papers for details. Could you please explain the second question?

Thanks in advance.

No idea, maybe empirical setting, but very common in many papers.
Better looking for other explanations.