tutility.cu - sphere - GPU-based 3D discrete element method algorithm with optional fluid coupling
  HTML git clone git://src.adamsgaard.dk/sphere
   DIR Log
   DIR Files
   DIR Refs
   DIR LICENSE
       ---
       tutility.cu (1837B)
       ---
            1 #include <iostream>
            2 #include "sphere.h"
            3 
            4 // MISC. UTILITY FUNCTIONS
            5 
            6 // Error handler for CUDA GPU calls. 
            7 // Returns error number, filename and line number containing the error to the
            8 // terminal.  Please refer to CUDA_Toolkit_Reference_Manual.pdf, section
            9 // 4.23.3.3 enum cudaError for error discription. Error enumeration starts from
           10 // 0.
           11 void DEM::diagnostics()
           12 {
           13     // Retrieve information from device to host and run diagnostic tests
           14     transferFromGlobalDeviceMemory();
           15     checkValues();
           16 
           17     // Clean up memory before exiting
           18     if (fluid == 1 && cfd_solver == 0) {
           19         freeNSmemDev();
           20         freeNSmem();
           21     }
           22     if (fluid == 1 && cfd_solver == 1) {
           23         freeDarcyMemDev();
           24         freeDarcyMem();
           25     }
           26     freeGlobalDeviceMemory();
           27     // CPU memory freed upon object destruction
           28 }
           29 
           30 void DEM::checkForCudaErrors(const char* checkpoint_description,
           31         const int run_diagnostics)
           32 {
           33     cudaError_t err = cudaGetLastError();
           34     if (err != cudaSuccess) {
           35         std::cerr << "\nCuda error detected, checkpoint: "
           36             << checkpoint_description << "\nError string: "
           37             << cudaGetErrorString(err) << std::endl;
           38 
           39         if (run_diagnostics == 1)
           40             diagnostics();
           41 
           42         exit(EXIT_FAILURE);
           43     }
           44 }
           45 
           46 void DEM::checkForCudaErrorsIter(const char* checkpoint_description,
           47         const unsigned int iteration,
           48         const int run_diagnostics)
           49 {
           50     cudaError_t err = cudaGetLastError();
           51     if (err != cudaSuccess) {
           52         std::cerr << "\nCuda error detected, checkpoint: "
           53             << checkpoint_description << "\nduring iteration " << iteration
           54             << "\nError string: " << cudaGetErrorString(err) << std::endl;
           55 
           56         if (run_diagnostics == 1)
           57             diagnostics();
           58 
           59         exit(EXIT_FAILURE);
           60     }
           61 }
           62 
           63 // vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4