Displaying 3 results from an estimated 3 matches for "fft_dswp".
2012 Jun 07
2
[LLVMdev] no differnce in the execution time between seq. and parallel programs
...exact sequence of commands) both for gcc and LLVM.
>
> Ciao, Duncan.
>
Hi Ciao
Thank you very much for your help and patience
I want to check with you the compilation steps witout turn on any optimazation
in both gcc and llvm :
Fft_x.c The first program before the transformation
Fft_dswp.c The second program after the transformation
In gcc compiler I used the following steps
--Before the transformation
gcc –Wall fft_x.c –o samp -lm
Time ./samp
0.544 the execution time before transformation
--After the transformation
Gcc –Wall fftx_dswp.c –o samp -...
2012 Jun 06
0
[LLVMdev] no differnce in the execution time between seq. and parallel programs
> I would be happy if you give me an insight into what could have caused the
> difference.
No idea. Maybe you forgot to turn optimizations on when compiling? Otherwise
you are going to have to send in your programs along with an explanation of how
you compiled them exactly (exact sequence of commands) both for gcc and LLVM.
Ciao, Duncan.
2012 Jun 06
2
[LLVMdev] no differnce in the execution time between seq. and parallel programs
Duncan Sands <baldrick <at> free.fr> writes:
>
> Hi esraa,
>
> > i am using LLVM to execute two programs both of them was exactly
> > similar but the difference was the first one is a sequential program
> > has three functions. In the second program i am trying to execute it
> > by giving each function to thread (three thread work in parallel way)