[Date Prev][Date Next] [Thread Prev][Thread Next] [Date Index] [Thread Index]

Re: OpenMPI 5.0 to be 32-bit only ?

On Wed, Feb 15, 2023 at 11:29:25AM +0000, Alastair McKinstry wrote:
The counterpoint is if someone does a high-core-count 32-bit arch for HPC; x32 could (have been) such an architecture, but its development looks stalled.

That may have been a possibility 15-20 years ago, but today anything calling itself "HPC" is working with datasets large enough that trying to use 32 bit pointers would be far more trouble than it's worth; x32 is of interest to container services far more than HPC, IMO. (Even the GPUs have working sets above 4GB currently--the days of a viable 32 bit architecture in this space are entirely in the rear view mirror.)

I personally think it makes far more sense to excise MPI from architectures where it will never realistically be used than it does to try to keep it going just to have it.

Reply to: