Re: portable performance engineering (was: Fedora 32 System-Wide Change proposal: x86-64 micro-architecture update)

2019-07-23 Thread Kevin Kofler
Dave Love wrote: > they'd be rather limited by the compiler options we're supposed to use, > that don't include vectorization, so you don't even get the benefit you > could from SSE2. (I've been told off in review for turning that on, > though an FPC member has approved it.) Why don't we enable -

portable performance engineering (was: Fedora 32 System-Wide Change proposal: x86-64 micro-architecture update)

2019-07-23 Thread Dave Love
I'm afraid this turned into a bit of and essay on more useful things Fedora could do for portable performance engineering, should anyone care. I actually have no interest in Fedora except as a requirement to work on packaging for research software around EPEL, specifically for HPC and so performan