#include<CL/sycl.hpp>
#include<iostream>
using namespace sycl;
int main()
{
constexpr int N=1024;
int i;
std::array<int,N> a;
std::array<int,N> b;
std::array<int, N> c;
for(i=0;i<N;i++)
{
a[i]=i;
b[i]=N-i;
}
/*creating multiple contexts*/
context c1{};
context c2{};
context c3{};
buffer a_buffer(a);
buffer b_buffer(b);
buffer c_buffer(c);
/*for each context we are creating queue*/
queue q1{c1,gpu_selector()};
queue q2{c2,gpu_selector()};
queue q3{c3,gpu_selector()};
q1.submit([&] (handler &h){
		sycl::stream out(1024, 256, h);
accessor acc_a(a_buffer,h);
accessor acc_b(b_buffer,h);
accessor acc_c(c_buffer,h);
h.parallel_for(N ,[=](id<1> i){
		out<<"q1";
acc_c[i]=acc_a[i]+acc_b[i];
});
});
q2.submit([&] (handler &h2){
accessor acc_a1(a_buffer,h2);
accessor acc_b1(b_buffer,h2);
accessor acc_c1(c_buffer,h2);
sycl::stream out(1024, 256, h2 );
h2.parallel_for(N ,[=](id<1> i){
		out<<"qq2";
acc_c1[i]=acc_a1[i]+acc_b1[i];
});
});
q3.submit([&] (handler &h3){
accessor acc_a2(a_buffer,h3);
accessor acc_b2(b_buffer,h3);
accessor acc_c2(c_buffer,h3);
sycl::stream out(1024, 256, h3);
h3.parallel_for(N ,[=](id<1> i){
acc_c2[i]=acc_a2[i]+acc_b2[i];
out<<"qqq3";
});
});

return 0;
}