On Fri, 26 Feb 2016 17:29:58 +0000 "Patrick O'Callaghan" <pocallaghan@xxxxxxxxx> wrote: > On Fri, 2016-02-26 at 08:31 -0600, Ranjan Maitra wrote: > > Hi, > > > > Disclaimer: This is clearly marked OT, with the only connection to > > this group being the fact that I am running F23 on a 20-core Dell > > T5810 @3.1 GHz each and 64 GiB memory. My OT queries over the past 13 > > years (almost) here have elicited great wealth of information so I am > > posing here. > > > > So, I am trying to compare two kinds of methods in a C program. Both > > are written as efficiently as possible (assumed because no point > > otherwise). I would like to know which of these is more efficient. I > > have been using get_rusage but I was wondering whether there is a > > better way? > > I don't claim to be an expert but at first glance I wonder if you've > defined what you mean by efficiency. Execution time? Program size? > Memory locality (affects virtual memory performance) etc. I responded to this on another thread, but I am interested in the amount of time taken by a program in executing a set of instructions. If that includes memory allocation, etc, then fine. > You might want to read some of the extensive literature on > benchmarking. I have found the literature extremely confusing and unclear. > > > Separately, is there a way to get the number of floating point > > instructions in C? Both FLOPS and MIPS? > > Instructions executed on every code path? On the most likely code path? > > Remember: MIPS = Meaningless Indicator of the Performance of Systems. > OK, is there a way to calculate the FLOP instructions in C? Many thanks and best wishes, Ranjan ____________________________________________________________ FREE ONLINE PHOTOSHARING - Share your photos online with your friends and family! Visit http://www.inbox.com/photosharing to find out more! -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
