schwarz.cu

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/*
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#include "schwarz_kernel.h"
#include <device/device_config.h>
#include <device/cuda/check.h>
#include <stdio.h>
 
extern "C" {
 
  void cuda_schwarz_extrude(void *arr1, int * l1, real * f1,
                            void *arr2, int * l2, real * f2,
                            int * nx, int * nel, cudaStream_t stream) {
    
    const dim3 nthrds((*nx-2)*(*nx-2), 1, 1);
    const dim3 nblcks((*nel), 1, 1);
      
#define CASE(NX)                                                       \
    case NX:                                                           \
    schwarz_extrude_kernel<real,NX>                                    \
      <<<nblcks, nthrds, 0, stream>>>((real *) arr1,* l1, * f1,        \
                         (real *) arr2, *l2, *f2 );                    \
    CUDA_CHECK(cudaGetLastError());                                    \
        break;
 
    switch(*nx) {
      CASE(3);
      CASE(4);
      CASE(5);
      CASE(6);
      CASE(7);
      CASE(8);
      CASE(9);
      CASE(10);
      CASE(11);
      CASE(12);
      CASE(13);
      CASE(14);
    default:
      {
        fprintf(stderr, __FILE__ ": size not supported: %d\n", *nx);
        exit(1);
      }
   }
 
  } 
 
  void cuda_schwarz_toext3d(void *a, void *b,int * nx, int * nel, cudaStream_t stream){
    
    const dim3 nthrds(1024, 1, 1);
    const dim3 nblcks((*nel), 1, 1);
  
    schwarz_toext3d_kernel<real>
      <<<nblcks, nthrds, 0, stream>>>((real *) a,(real *) b, * nx);  
    CUDA_CHECK(cudaGetLastError());
  } 
 
  void cuda_schwarz_toreg3d(void *b, void *a,int * nx, int * nel, cudaStream_t stream){
    
    const dim3 nthrds(1024, 1, 1);
    const dim3 nblcks((*nel), 1, 1);
  
    schwarz_toreg3d_kernel<real>
    <<<nblcks, nthrds,0, stream>>>((real *) b,(real *) a, * nx);  
    CUDA_CHECK(cudaGetLastError());
  } 
 
}