Hello,

I'm not sure what the row compression task in Project 2 is asking us to do. Does this mean we have to generate an uncompressed matrix beforehand and then compress it? What does it mean to support both MPI and OpenMP?

Also should we generate the row compressed matrix in a separate program and then pass it to each implementation of matrix multiplication (e.g. sequential, OpenMP, etc.)

Thanks,

You need to implement row compression, as described in the Project 1 specifications.

Your code needs to be able to generate and multiply row compressed matrices, sequentially, and using OpenMP, MPI, and OpenMP+MPI.

It will be much easier to have one implementation that both generates the matrices and multiplies them. Remember, the largest matrices you are working with will be too large to write to files.

Thank you for that response sir.

Just to confirm that means we have to generate the matrices sequentially, with openMP, MPI and OpenMP+MPI?

Yes, how you generate your matrix has to match how you multiply your matrix to get the best performance possible for each configuration.