initial commit

src/utils.cpp

@@ -0,0 +1,45 @@
+#include "utils.h"
+
+void readBinaryFile(const char* fname, int size, value_type** data_h, value_type** data_d)
+{
+    std::ifstream dataFile (fname, std::ios::in | std::ios::binary);
+    std::stringstream error_s;
+    if (!dataFile)
+    {
+        error_s << "Error opening file " << fname; 
+        FatalError(error_s.str());
+    }
+    int size_b = size*sizeof(value_type);
+    *data_h = new value_type[size];
+    if (!dataFile.read ((char*) *data_h, size_b)) 
+    {
+        error_s << "Error reading file " << fname; 
+        FatalError(error_s.str());
+    }
+    
+    checkCuda( cudaMalloc(data_d, size_b) );
+    checkCuda( cudaMemcpy(*data_d, *data_h,
+                                size_b,
+                                cudaMemcpyHostToDevice) );
+}
+
+void printDeviceVector(int size, value_type* vec_d)
+{
+    value_type *vec;
+    vec = new value_type[size];
+    cudaDeviceSynchronize();
+    cudaMemcpy(vec, vec_d, size*sizeof(value_type), cudaMemcpyDeviceToHost);
+    for (int i = 0; i < size; i++)
+    {
+        std::cout << vec[i] << " ";
+    }
+    std::cout << std::endl;
+    delete [] vec;
+}
+
+void resize(int size, value_type **data)
+{
+    if (*data != NULL)
+        checkCuda( cudaFree(*data) );
+    checkCuda( cudaMalloc(data, size*sizeof(value_type)) );
+}