Thank you for the answers! On Thu, Sep 8, 2016 at 3:31 AM, Dimitris Chloupis <kilon.al...@gmail.com> wrote:
> It does not matter. When it comes to performance the workflow is always > the same whatever the language you use. > > 1. Profile the code see where it consume most CPU cycles > 2. Can you improve the code to remove unnecessary processing ? You will be > surprised how many times its your code and not the language that is slow > 3. If it's not your code can you find a library written in C that is > optimized for speed ? > 4. If no then write the code in C compile it as shared library and use it > from the language of your choice using an FFI > > Basically when a VM in a dynamic language finds a call to a C shared > library using the FFI it will freeze everything and give priority to the C > code to execute the call to its native speed. Then after the execution the > VM resumes. There is an overhead however for making the call. > > Because speed depends on the factors I described above for many > experienced coders general benchmarks are completely useless. > > Speed in the end is just machine code with as less instructions as > possible using most hardware acceleration as possible. > > Talking about hardware acceleration if you try to do the same processing > on a list of data which is very large in parallel don't even consider C , > instead go directly to GPU because it can accelerate even up to 100 times > compared to CPU. But in the end will depend on how much speed you really > need. If you indeed need it then you can accelerate your code using the GPU > with the help of CUDA or OpenCL. > > Remember however that optimizing is the root of true evil , it will make > your code ugly, hard to read, difficult to extend and much more buggy. > > PS: the vast majority of benchmarks including the ones linked by Clement > use just code written in the language tested also using the library that > the language comes with. That means that they use none of the normal > optimizations I described above and hence they cannot be considered > practical realistic scenarios. > > On Thu, 8 Sep 2016 at 02:30, Vitor Medina Cruz <vitormc...@gmail.com> > wrote: > >> Hello, >> >> How is Pharo compared with Ruby in terms of performance? Has someone done >> some comparison benchmark? If yes, that was done with other platforms? >> >> Regards, >> VItor >> >
