Re: Is test case with 700k lines of code a valid test case?

2016-03-14 Thread Ewart Timothée
99% of 700k, 693k of printf(), is it ascii art ? ++t > Le 14 Mar 2016 à 16:42, paul_kon...@dell.com a écrit : > > >> On Mar 14, 2016, at 11:31 AM, Andrey Tarasevich >> wrote: >> >> Hi, >> >> I have a source file with 700k lines of code 99% of which are printf() >> statements. Compiling this

indirect load store on POWER8 and extra dress computation

2015-11-02 Thread Ewart Timothée
Hello All, I have a question about performance on Power8 (little-endian, GCC 4.9.1) specially with load/store. I evaluate all possibilities to evaluate polynomial, to simplify the thread I provide a basic example of meta-programing about Polynomial evaluation with Horner method. I have: templ

Re: vec_ld versus vec_vsx_ld on power8

2015-03-13 Thread Ewart Timothée
arrays of bytes. Arrays of anything > larger must use vec_vsx_ld to avoid errors. > > Again, sorry for my previous omission! > > Thanks, > > Bill Schmidt, Ph.D. > IBM Linux Technology Center > > On Fri, 2015-03-13 at 15:42 +, Ewart Timothée wrote: >> thank you very much for this answer. >> I know my memory is aligned so I will use vec_ld/st only. >> >> best >> >> Tim >> >> >> >> >> > >

Re: vec_ld versus vec_vsx_ld on power8

2015-03-13 Thread Ewart Timothée
thank you very much for this answer. I know my memory is aligned so I will use vec_ld/st only. best Tim

vec_ld versus vec_vsx_ld on power8

2015-03-13 Thread Ewart Timothée
Hello all, I have a issue/question using VMX/VSX on Power8 processor on a little endian system. Using intrinsics function, if I perform an operation with vec_vsx_ld(…) - vet_vsx_st(), the compiler will add a permutation, and then perform an operations (memory correctly aligned) lxvd2x … xxpermd