[Openmp-dev] issue with opennp and clang

[Millad Ghane]

Hi,

You haven't imported the openmp library to Clang yet. It simply ignores the
pragmas.

Go to this link and follow the instructions.
clang-omp.github.io


Best Regards,
Millad


On Friday, November 7, 2014, Amir H. Ashouri <amirhossein.ashouri at gmail.com>
wrote:

> Greetings,
>
> so I tried to use opennp with one of the latest version of clang, clang
> version 3.4.2 (tags/RELEASE_34/dot2-final). Followed the procedure to
> compilre and export the library PATHs, Compiling my hello.c using :
>
> clang -fopenmp hello.c
>
> and then running it, still it can't use more than 1 thread:
>
> Bash-4.1$ ./a.out Hello from thread 0, nthreads 1
>
> I tried to manually export export OMP_NUM_THREADS=8 but that didn't solve
> anything as well, As a workaround I define  #pragma omp parallel
> num_threads(#noofthreads) inside the source code but still the issue is
> there.
>
> Any suggestions would be appreciated.
>
>
> -Amir
>
>
> p.sl: This is the hello.c:
>
> #include <omp.h>#include <stdio.h>int main() {#pragma omp parallel
> printf("Hello from thread %d, nthreads %d\n", omp_get_thread_num(), omp_get_num_threads
>
>

-- 
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