[LLVMdev] no differnce in the execution time between seq. and parallel programs

[Duncan Sands]

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)
> ,but when i am trying to calculate the execution time i found the
> execution time for parallel one larger than sequential one ????

this is a very vague description and it's hard to understand what you mean
here.  Maybe you mean that you used clang to compile a program containing
openmp macros.  If so you have discovered that clang does not support openmp:
use the dragonegg LLVM front-end instead.

Ciao, Duncan.

>
> note
> I execute both of these program in gcc compiler and i found there is a
> difference in the execution time between these programs.The parallel
> one was faster than the sequential one.
>
> i will be thankful if any one can help me
> Regards
> esraa
>
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