Microsoft C code is not very fast these days. You might want to compare
with MinGW.
On Monday, January 5, 2015 9:56:07 AM UTC-5, lapeyre@gmail.com wrote:
Hi, here is a comparison of Julia and C++ for simulating a random walk
https://github.com/jlapeyre/ranwalk-Julia-vs-Cxx.
It is the
It may be in part the implementation of the RNG. I think it is also in
part whether the abstraction is optimized away.
Notice that Julia v0.3 is faster than v0.4. This is probably randbool() vs.
rand(Bool).
On Monday, January 5, 2015 4:50:56 PM UTC+1, Isaiah wrote:
Very neat. Just in case
I doubt that rand(Bool) is any slower, since randbool() calls rand(Bool).
It is worth filing this as a performance regression.
-viral
On Monday, January 5, 2015 9:41:45 PM UTC+5:30, lapeyre@gmail.com wrote:
It may be in part the implementation of the RNG. I think it is also in
part
I meant randbool() in v0.3, where it was a more direct call, not randbool()
in v0.4.
Anyway, I just found the problem and patched it. Adding one '@inline' now
makes rand(Bool) in v0.4
about as fast as randbool() in v0.3.
Should I open an issue (bug report), or just make a PR ?
On Monday,
Thanks. Do create a PR.
-viral
On 06-Jan-2015, at 1:53 am, lapeyre.math1...@gmail.com wrote:
I meant randbool() in v0.3, where it was a more direct call, not randbool()
in v0.4.
Anyway, I just found the problem and patched it. Adding one '@inline' now
makes rand(Bool) in v0.4
about
Oh, and, (I forgot to mention!) the Julia code runs much faster.
On Monday, January 5, 2015 3:56:07 PM UTC+1, lapeyre@gmail.com wrote:
Hi, here is a comparison of Julia and C++ for simulating a random walk
https://github.com/jlapeyre/ranwalk-Julia-vs-Cxx.
It is the first Julia program
Very neat. Just in case this gets posted to the interwebz, it is worth
pointing out that the performance advantage for Julia can probably be
explained by differences in the underlying RNG. We use dsFMT, which is
known to be one of (if not the?) fastest MT libraries around. I could not
find any
Ok. It's done. Just to be sure I understood what I read on a github forum;
there is no way for me to attach a label to the PR. So the labels are
always added by someone else ?
--John
On Monday, January 5, 2015 9:25:18 PM UTC+1, Viral Shah wrote:
Thanks. Do create a PR.
-viral
On
