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Full Discussion: Program in parallel
Top Forums Programming Program in parallel Post 302623833 by bestb on Saturday 14th of April 2012 08:02:33 PM
Old 04-14-2012
Quote:
Originally Posted by Corona688
The simplest way would be to run four copies of the program, each checking a different range of numbers.
ok I changed to this... what you think?

Code:
#include <cmath> 
#include <iostream> 

#define N 10000 

using namespace std; i

int main() 
{
	int i,j, 
		square; 
	bool orFirst[N+1], 
		 orSquare[N+1]; 
	#pragma omp parallel for 
	for (i=1;i<=N;i++) 
	{
		square=sqrt(i); 
		#pragma omp sections
		{
			#pragma omp section 
			{
				orFirst[i]=true; 
				for (j=2;j<=square;j++) 
					if (i%j==0) 
					{
						orFirst[i]=false; 
						break; 
					}
			}
			#pragma omp section 
			{
				if (square*square==i) 
					orSquare[i]=true; 
				else 
					orSquare[i]=false; 
			}
		}
	}
	orFirst[1]=false; 
	cout<<"First No in range 1-10000: ";
	for (i=1;i<=N;i++) 
		if (orFirst[i]==true) 
			cout<<i<<" "; 
	cout<<"\n\nSquare No in the range of 1-10000: ";
	for (i=1;i<=N;i++) 
		if (orSquare[i]==true) 
			cout<<i<<" "; 
	cin.get(); 
	return 0; 
}

 

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LEARN ABOUT CENTOS

__gnu_parallel::_lexicographic

__gnu_parallel::_Lexicographic< _T1, _T2, _Compare >(3)      Library Functions Manual	   __gnu_parallel::_Lexicographic< _T1, _T2, _Compare >(3)

NAME

       __gnu_parallel::_Lexicographic< _T1, _T2, _Compare > -

SYNOPSIS

       Inherits std::binary_function< std::pair< _T1, _T2 >, std::pair< _T1, _T2 >, bool >.

   Public Types
       typedef std::pair< _T1, _T2 > first_argument_type
       typedef bool result_type
       typedef std::pair< _T1, _T2 > second_argument_type

   Public Member Functions
       _Lexicographic (_Compare &__comp)
       bool operator() (const std::pair< _T1, _T2 > &__p1, const std::pair< _T1, _T2 > &__p2) const

Detailed Description
   template<typename _T1, typename _T2, typename _Compare>class __gnu_parallel::_Lexicographic< _T1, _T2, _Compare >
       Compare __a pair of types lexicographically, ascending.

       Definition at line 53 of file multiseq_selection.h.

Member Typedef Documentation
   typedef std::pair< _T1, _T2 >  std::binary_function< std::pair< _T1, _T2 > , std::pair< _T1, _T2 > , bool  >::first_argument_type [inherited]
       first_argument_type is the type of the first argument

       Definition at line 117 of file stl_function.h.

   typedef bool  std::binary_function< std::pair< _T1, _T2 > , std::pair< _T1, _T2 > , bool  >::result_type [inherited]
       result_type is the return type

       Definition at line 123 of file stl_function.h.

   typedef std::pair< _T1, _T2 >  std::binary_function< std::pair< _T1, _T2 > , std::pair< _T1, _T2 > , bool  >::second_argument_type [inherited]
       second_argument_type is the type of the second argument

       Definition at line 120 of file stl_function.h.

Author
       Generated automatically by Doxygen for libstdc++ from the source code.

libstdc++							  Tue Jun 10 2014	   __gnu_parallel::_Lexicographic< _T1, _T2, _Compare >(3)
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