Hi Jonathan,
Mono 64bits uses the x87 square root instruction which is far from optimal
since it requires 2 stores and 1 load.
Zoltan, is it possible to switch to SQRTSD?
And, yes, mono does have some issues with register allocation. It's
something that will be worked on in the mid term thou.
i did the exact same thing, and dumped the assembly generated by c and c# on
nbody,
in addition to the sqrt issue, which i believe is pre and post a SSEn, where
mono isn't as uptodate
on full use of SSEn , the other issue was, mono did a few sets of unnecessary
register transfer,
as compared to
Hi,
I am looking forward to moving all of my code from Java / C++ to F# / C# in the
very near future. I took the nbody code from the language shootout and ran
with 500 million iterations (much more than used in the shootout to provide a
fair comparison) on ubuntu server on a core i7 920 box.
