.. _program_listing_file_src_SofaCUDALinearSolver_utils.h:

Program Listing for File utils.h
================================

|exhale_lsh| :ref:`Return to documentation for file <file_src_SofaCUDALinearSolver_utils.h>` (``src/SofaCUDALinearSolver/utils.h``)

.. |exhale_lsh| unicode:: U+021B0 .. UPWARDS ARROW WITH TIP LEFTWARDS

.. code-block:: cpp

   /******************************************************************************
   *                 SOFA, Simulation Open-Framework Architecture                *
   *                    (c) 2006 INRIA, USTL, UJF, CNRS, MGH                     *
   *                                                                             *
   * This program is free software; you can redistribute it and/or modify it     *
   * under the terms of the GNU Lesser General Public License as published by    *
   * the Free Software Foundation; either version 2.1 of the License, or (at     *
   * your option) any later version.                                             *
   *                                                                             *
   * This program is distributed in the hope that it will be useful, but WITHOUT *
   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or       *
   * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License *
   * for more details.                                                           *
   *                                                                             *
   * You should have received a copy of the GNU Lesser General Public License    *
   * along with this program. If not, see <http://www.gnu.org/licenses/>.        *
   *******************************************************************************
   * Authors: The SOFA Team and external contributors (see Authors.txt)          *
   *                                                                             *
   * Contact information: contact@sofa-framework.org                             *
   ******************************************************************************/
   #pragma once
   
   #include <cusolverSp.h>
   #include <cstdio>
   #include <cuda.h>
   #include <cuda_runtime.h>
   #include <map>
   #include <string>
   #include <sofa/helper/logging/Messaging.h>
   
   #define checkCudaErrors(err) __checkCudaErrors(err, __FILE__, __LINE__)
   #define checksolver(status ) __checksolver(status, __FILE__, __LINE__)
   
   
   inline void __checkCudaErrors(cudaError err, const char *file, const int line)
   {
       if (cudaSuccess != err)
       {
           fprintf(stderr, "%s(%i) : CUDA Runtime API error %d: %s.\n", file, line,
                   (int)err, cudaGetErrorString(err));
           exit(EXIT_FAILURE);
       }
   }
   
   inline void __checksolver( cusolverStatus_t status, const char *file, const int line)
   {
       if(status != 0)
       {
           msg_error("SofaCUDALinearSolver") << "Cuda Failure in " << file << " at line "<< line;
   
           static const std::map<cusolverStatus_t, std::string> statusMap {
               { CUSOLVER_STATUS_SUCCESS, "success" },
               { CUSOLVER_STATUS_NOT_INITIALIZED, "not initialized" },
               { CUSOLVER_STATUS_ALLOC_FAILED, "alloc failed" },
               { CUSOLVER_STATUS_INVALID_VALUE, "invalid value" },
               { CUSOLVER_STATUS_ARCH_MISMATCH, "arch mismatch" },
               { CUSOLVER_STATUS_MAPPING_ERROR, "mapping error" },
               { CUSOLVER_STATUS_EXECUTION_FAILED, "execution failed" },
               { CUSOLVER_STATUS_INTERNAL_ERROR, "internal error" },
               { CUSOLVER_STATUS_MATRIX_TYPE_NOT_SUPPORTED, "matrix type not supported" },
               { CUSOLVER_STATUS_NOT_SUPPORTED, "not supported" },
               { CUSOLVER_STATUS_ZERO_PIVOT, "zero pivot" },
               { CUSOLVER_STATUS_INVALID_LICENSE, "invalid license" },
               { CUSOLVER_STATUS_IRS_PARAMS_NOT_INITIALIZED, "IRS params not initialized" },
               { CUSOLVER_STATUS_IRS_PARAMS_INVALID, "IRS params invalid" },
               { CUSOLVER_STATUS_IRS_PARAMS_INVALID_PREC, "IRS params invalid prec" },
               { CUSOLVER_STATUS_IRS_PARAMS_INVALID_REFINE, "IRS params invalid refine" },
               { CUSOLVER_STATUS_IRS_PARAMS_INVALID_MAXITER, "IRS params invalid maxiter" },
               { CUSOLVER_STATUS_IRS_INTERNAL_ERROR, "IRS internal error" },
               { CUSOLVER_STATUS_IRS_NOT_SUPPORTED, "IRS not supported" },
               { CUSOLVER_STATUS_IRS_OUT_OF_RANGE, "IRS out of range" },
               { CUSOLVER_STATUS_IRS_NRHS_NOT_SUPPORTED_FOR_REFINE_GMRES, "IRS NRHS not supported for refine GMRES" },
               { CUSOLVER_STATUS_IRS_INFOS_NOT_INITIALIZED, "IRS infos not initialized" },
               { CUSOLVER_STATUS_IRS_INFOS_NOT_DESTROYED, "IRS infos not destroyed" },
               { CUSOLVER_STATUS_IRS_MATRIX_SINGULAR, "IRS matrix singular" },
               { CUSOLVER_STATUS_INVALID_WORKSPACE, "invalid workspace" },
           };
   
           msg_error("SofaCUDALinearSolver") << "Status: " << status << " - " << statusMap.at(status);
           exit(EXIT_FAILURE);
       }
   }
   
   namespace SofaCUDALinearSolver
   {
       inline bool cudaInit()
       {
           int device_count;
           checkCudaErrors(cudaGetDeviceCount(&device_count));
   
           if (device_count == 0)
           {
               msg_error("SofaCUDALinearSolver") << "No device supporting CUDA";
               return false;
           }
   
           int major=-1,minor=-1,patch=-1;
           cusolverGetProperty(MAJOR_VERSION, &major);
           cusolverGetProperty(MINOR_VERSION, &minor);
           cusolverGetProperty(PATCH_LEVEL, &patch);
           printf("CUSOLVER Version: %d.%d.%d\n", major,minor,patch);
   
           return true;
       }
   }