Thanks for the reference - I have not heard about the Convex C-Series before so I'll be sure to look it up. While the MRISC32-A1 does serial vector processing,

Thanks for the reference - I have not heard about the Convex C-Series before so I'll be sure to look it up. While the MRISC32-A1 does serial vector processing, the idea is that you should be able to do parallel processing with the same ISA, so I'm not certain that masking in that fashion is a good option for the MRISC32. Also, having a vector mask register like the Cray limits the size of the vector registers (e.g. to 32 elements in the MRISC32, or 64 elements in a 64-bit architecture).