removed obsolete file

samples/gpu/multi_gpu.cpp

@@ -1,122 +0,0 @@
-// Disable some warnings which are caused with CUDA headers
-#pragma warning(disable: 4201 4408 4100)
-
-#include <iostream>
-#include <cvconfig.h>
-#include "opencv2/core/core.hpp"
-#include <opencv2/gpu/gpu.hpp>
-
-#if !defined(HAVE_CUDA) || !defined(HAVE_TBB)
-
-int main()
-{
-#if !defined(HAVE_CUDA)
-    cout << "CUDA support is required (CMake key 'WITH_CUDA' must be true).\n";
-#endif
-
-#if !defined(HAVE_TBB)
-    cout << "TBB support is required (CMake key 'WITH_TBB' must be true).\n";
-#endif
-
-    return 0;
-}
-
-#else
-
-#include <cuda.h>
-#include <cuda_runtime.h>
-#include "opencv2/core/internal.hpp" // For TBB wrappers
-
-using namespace std;
-using namespace cv;
-using namespace cv::gpu;
-
-struct Worker { void operator()(int device_id) const; };
-void destroyContexts();
-
-#define cuSafeCall(code) if (code != CUDA_SUCCESS) { \
-    cout << "CUDA driver API error: code " << code \
-        << ", file " << __FILE__ << ", line " << __LINE__ << endl; \
-    destroyContexts(); \
-    exit(-1); \
-}
-
-
-// Each GPU is associated with its own context
-CUcontext contexts[2];
-
-
-int main()
-{
-    if (getCudaEnabledDeviceCount() < 2)
-    {
-        cout << "Two or more GPUs are required\n";
-        return -1;
-    }
-
-    cuSafeCall(cuInit(0));
-
-    // Create context for the first GPU
-    CUdevice device;
-    cuSafeCall(cuDeviceGet(&device, 0));
-    cuSafeCall(cuCtxCreate(&contexts[0], 0, device));
-
-    CUcontext prev_context;
-    cuSafeCall(cuCtxPopCurrent(&prev_context));
-
-    // Create context for the second GPU
-    cuSafeCall(cuDeviceGet(&device, 1));
-    cuSafeCall(cuCtxCreate(&contexts[1], 1, device));
-
-    cuSafeCall(cuCtxPopCurrent(&prev_context));
-
-    // Execute calculation in two threads using two GPUs
-    int devices[] = {0, 1};
-    parallel_do(devices, devices + 2, Worker());
-
-    destroyContexts();
-    return 0;
-}
-
-
-void Worker::operator()(int device_id) const
-{
-    // Set proper context
-    cuSafeCall(cuCtxPushCurrent(contexts[device_id]));
-
-    Mat src(1000, 1000, CV_32F);
-    Mat dst;
-
-    RNG rng(0);
-    rng.fill(src, RNG::UNIFORM, 0, 1);
-
-    // CPU works
-    transpose(src, dst);
-
-    GpuMat d_src(src);
-    GpuMat d_dst;
-
-    // GPU works
-    transpose(d_src, d_dst);
-
-    // Check results
-    bool passed = norm(dst - Mat(d_dst), NORM_INF) < 1e-3;
-    cout << "GPU #" << device_id << ": "<< (passed ? "passed" : "FAILED") << endl;
-
-    // Deallocate data here, otherwise deallocation will be performed
-    // after context is extracted from the stack
-    d_src.release();
-    d_dst.release();
-
-    CUcontext prev_context;
-    cuSafeCall(cuCtxPopCurrent(&prev_context));
-}
-
-
-void destroyContexts()
-{
-    cuSafeCall(cuCtxDestroy(contexts[0]));
-    cuSafeCall(cuCtxDestroy(contexts[1]));
-}
-
-#endif