Offload program with STL vector

H__Kamil — Wed, 24 Jun 2015 14:43:36 GMT

Hi,

I've got a problem with my program. It's simple code which show my problem.

#pragma offload_attribute (push, target(mic))
#include <vector>
#include "offload.h"
#include <stdio.h>
#pragma offload_attribute (pop)

class A
{
	public:
	A() {}
	std::vector<int> V;
};


int main()
{
	A* wsk = new A();
	wsk->V.push_back(1);
	
	#pragma offload target(mic) in(wsk)
	{
		printf("%d", wsk->V[0]);
		
		printf("END OFFLOAD");
	}
		
	return 0;
}

I've got a class object with STL vector which is container for data needed to computation. I would like to create object on host, initialize data for computation on host too, then i want to move class object to do computation on Intel Xeon Phi coprocessor. In result i got error:

offload error: process on the device 0 was terminated by signal 11 (SIGSEGV)

Why it doesn't work correctly? How to transfer STL vector to coprocessor?

When the data you want to

Frances_R_Intel — Thu, 02 Jul 2015 06:37:05 GMT

When the data you want to pass between the host and the coprocessor is not bit-wise copyable, as in this case, you need to use the virtual shared memory offload model. Check out the sample code that comes with the compilers (which installs in /opt/intel/composerxe/Samples/en_US/C++/mic_samples/shrd_sampleCPP by default) and the section on shared memory programming in the C++ User's Guide in the Intel® Software Documentation Library (https://software.intel.com/en-us/node/522494 for the 15.0 version of the compiler.)

topic When the data you want to in Software Archive

Offload program with STL vector

When the data you want to