Neko  0.9.99
A portable framework for high-order spectral element flow simulations
opr_cfl.cu
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34 
35 #include <stdio.h>
36 #include "cfl_kernel.h"
37 #include <device/device_config.h>
38 #include <device/cuda/check.h>
39 
40 
41 extern "C" {
42 
43 #include <math/bcknd/device/device_mpi_reduce.h>
44 #include <math/bcknd/device/device_mpi_op.h>
45 
49  real *cfl_d = NULL;
50 
54  real cuda_cfl(real *dt, void *u, void *v, void *w,
55  void *drdx, void *dsdx, void *dtdx,
56  void *drdy, void *dsdy, void *dtdy,
57  void *drdz, void *dsdz, void *dtdz,
58  void *dr_inv, void *ds_inv, void *dt_inv,
59  void *jacinv, int *nel, int *lx) {
60 
61  const dim3 nthrds(1024, 1, 1);
62  const dim3 nblcks((*nel), 1, 1);
63  const cudaStream_t stream = (cudaStream_t) glb_cmd_queue;
64 
65  if (cfl_d == NULL) {
66  CUDA_CHECK(cudaMalloc(&cfl_d, (*nel) * sizeof(real)));
67  }
68 
69 
70 
71 #define CASE(LX) \
72  case LX: \
73  cfl_kernel<real, LX, 1024> \
74  <<<nblcks, nthrds, 0, stream>>> \
75  (*dt, (real *) u, (real *) v, (real *) w, \
76  (real *) drdx, (real *) dsdx, (real *) dtdx, \
77  (real *) drdy, (real *) dsdy, (real *) dtdy, \
78  (real *) drdz, (real *) dsdz, (real *) dtdz, \
79  (real *) dr_inv, (real *) ds_inv, (real *) dt_inv, \
80  (real *) jacinv, (real *) cfl_d); \
81  CUDA_CHECK(cudaGetLastError()); \
82  break
83 
84  switch(*lx) {
85  CASE(2);
86  CASE(3);
87  CASE(4);
88  CASE(5);
89  CASE(6);
90  CASE(7);
91  CASE(8);
92  CASE(9);
93  CASE(10);
94  default:
95  {
96  fprintf(stderr, __FILE__ ": size not supported: %d\n", *lx);
97  exit(1);
98  }
99  }
100 
101  cfl_reduce_kernel<real><<<1, 1024, 0, stream>>> (cfl_d, (*nel));
102  CUDA_CHECK(cudaGetLastError());
103 
104  real cfl;
105 #ifdef HAVE_DEVICE_MPI
106  cudaStreamSynchronize(stream);
107  device_mpi_allreduce(cfl_d, &cfl, 1, sizeof(real), DEVICE_MPI_MAX);
108 #else
109  CUDA_CHECK(cudaMemcpyAsync(&cfl, cfl_d, sizeof(real),
110  cudaMemcpyDeviceToHost, stream));
111  cudaStreamSynchronize(stream);
112 #endif
113 
114  return cfl;
115  }
116 }
drdy
__global__ void T *__restrict__ T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ drdy
Definition: ax_helm_full_kernel.h:54
drdz
__global__ void T *__restrict__ T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ drdz
Definition: ax_helm_full_kernel.h:55
dsdz
__global__ void T *__restrict__ T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ dsdz
Definition: ax_helm_full_kernel.h:58
dsdy
__global__ void T *__restrict__ T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ dsdy
Definition: ax_helm_full_kernel.h:57
w
__global__ void T *__restrict__ T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ w
Definition: ax_helm_full_kernel.h:48
dtdy
__global__ void T *__restrict__ T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ dtdy
Definition: ax_helm_full_kernel.h:60
u
__global__ void T *__restrict__ T *__restrict__ const T *__restrict__ u
Definition: ax_helm_full_kernel.h:46
drdx
__global__ void T *__restrict__ T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ drdx
Definition: ax_helm_full_kernel.h:53
dtdz
__global__ void T *__restrict__ T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ dtdz
Definition: ax_helm_full_kernel.h:61
dsdx
__global__ void T *__restrict__ T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ dsdx
Definition: ax_helm_full_kernel.h:56
v
__global__ void T *__restrict__ T *__restrict__ const T *__restrict__ const T *__restrict__ v
Definition: ax_helm_full_kernel.h:47
dtdx
__global__ void T *__restrict__ T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ dtdx
Definition: ax_helm_full_kernel.h:59
jacinv
__global__ void T *__restrict__ T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ jacinv
Definition: ax_helm_full_kernel.h:62
dt
__global__ void const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ dt
Definition: cdtp_kernel.h:109
CUDA_CHECK
#define CUDA_CHECK(err)
Definition: check.h:6
device_config.h
real
double real
Definition: device_config.h:12
glb_cmd_queue
void * glb_cmd_queue
device_mpi_op.h
DEVICE_MPI_MAX
#define DEVICE_MPI_MAX
Definition: device_mpi_op.h:10
device_mpi_allreduce
void device_mpi_allreduce(void *buf_d, void *buf, int count, int nbytes, int op)
Definition: device_mpi_reduce.c:46
device_mpi_reduce.h
cfl_kernel.h
operators::cfl
real(kind=rp) function, public cfl(dt, u, v, w, Xh, coef, nelv, gdim)
Definition: operators.f90:394
cfl_d
real * cfl_d
Definition: opr_cfl.cu:49
CASE
#define CASE(LX)
cuda_cfl
real cuda_cfl(real *dt, void *u, void *v, void *w, void *drdx, void *dsdx, void *dtdx, void *drdy, void *dsdy, void *dtdy, void *drdz, void *dsdz, void *dtdz, void *dr_inv, void *ds_inv, void *dt_inv, void *jacinv, int *nel, int *lx)
Definition: opr_cfl.cu:54