Neko  0.8.99
A portable framework for high-order spectral element flow simulations
pc_jacobi.hip
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34 
35 #include <hip/hip_runtime.h>
36 #include <device/hip/check.h>
37 #include <device/device_config.h>
38 
39 template< typename T, const int LX >
40 __global__ void jacobi_kernel(T * __restrict__ du,
41  const T * __restrict__ dxt,
42  const T * __restrict__ dyt,
43  const T * __restrict__ dzt,
44  const T * __restrict__ G11,
45  const T * __restrict__ G22,
46  const T * __restrict__ G33,
47  const T * __restrict__ G12,
48  const T * __restrict__ G13,
49  const T * __restrict__ G23,
50  const int nel) {
51  const int idx = threadIdx.x + blockIdx.x * blockDim.x;
52  const int e = idx / (LX*LX*LX);
53  const int ijk = idx - e*LX*LX*LX;
54  const int jk = ijk / LX;
55  const int i = ijk - jk * LX;
56  const int k = jk / LX;
57  const int j = jk - k * LX;
58 
59 
60 
61  if (e >= nel)
62  return;
63 
64  T d = 0.0;
65 
66  for (int l = 0; l < LX; l++) {
67  T g = G11[l + LX*j + LX*LX*k + LX*LX*LX*e];
68  T t = dxt[i + LX*l];
69  d += g*t*t;
70  }
71 
72  for (int l = 0; l < LX; l++) {
73  T g = G22[i + LX*l + LX*LX*k + LX*LX*LX*e];
74  T t = dyt[j + LX*l];
75  d += g*t*t;
76  }
77 
78  for (int l = 0; l < LX; l++) {
79  T g = G33[i + LX*j + LX*LX*l + LX*LX*LX*e];
80  T t = dzt[k + LX*l];
81  d += g*t*t;
82  }
83 
84  // Corrections for deformed elements
85  if (i == 0 || i == LX-1) {
86  d += G12[i + LX*j + LX*LX*k + LX*LX*LX*e] * dxt[i + LX*i] * dyt[j + LX*j];
87  d += G13[i + LX*j + LX*LX*k + LX*LX*LX*e] * dxt[i + LX*i] * dzt[k + LX*k];
88  }
89 
90  if (j == 0 || j == LX-1) {
91  d += G12[i + LX*j + LX*LX*k + LX*LX*LX*e] * dyt[j + LX*j] * dxt[i + LX*i];
92  d += G23[i + LX*j + LX*LX*k + LX*LX*LX*e] * dyt[j + LX*j] * dzt[k + LX*k];
93  }
94 
95  if (k == 0 || k == LX-1) {
96  d += G13[i + LX*j + LX*LX*k + LX*LX*LX*e] * dzt[k + LX*k] * dxt[i + LX*i];
97  d += G23[i + LX*j + LX*LX*k + LX*LX*LX*e] * dzt[k + LX*k] * dyt[j + LX*j];
98  }
99 
100 
101 
102  du[idx] = d;
103 }
104 
105 extern "C" {
106  void hip_jacobi_update(void *d,
107  void *dxt, void *dyt, void *dzt,
108  void *G11, void *G22, void *G33,
109  void *G12, void *G13, void *G23,
110  int *nel, int *lxp) {
111 
112  const int lx = *lxp;
113  const int threads = 1024;
114  const int blocks = ((*nel * lx*lx*lx) + threads - 1) / threads;
115 
116 #define CASE(N)\
117  case N:\
118  hipLaunchKernelGGL(HIP_KERNEL_NAME( jacobi_kernel<real, N> ),\
119  blocks, threads, 0, (hipStream_t) glb_cmd_queue,\
120  (real *) d,\
121  (real *) dxt, (real *) dyt, (real *) dzt,\
122  (real *) G11, (real *) G22, (real *) G33,\
123  (real *) G12, (real *) G13, (real *) G23,\
124  *nel);\
125  break
126 
127  switch (lx) {
128  CASE(1);
129  CASE(2);
130  CASE(3);
131  CASE(4);
132  CASE(5);
133  CASE(6);
134  CASE(7);
135  CASE(8);
136  CASE(9);
137  CASE(10);
138  CASE(11);
139  CASE(12);
140  CASE(13);
141  CASE(14);
142  CASE(15);
143  CASE(16);
144  default:
145  fprintf(stderr, __FILE__ ": size not supported: %d\n", lx);
146  }
147 
148  HIP_CHECK(hipGetLastError());
149  }
150 }
const int i
const int e
const int j
__global__ void const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ dzt
Definition: cdtp_kernel.h:112
__global__ void const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ dyt
Definition: cdtp_kernel.h:111
__global__ void const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ dxt
Definition: cdtp_kernel.h:110
#define HIP_CHECK(err)
Definition: check.h:8
#define CASE(N)
void hip_jacobi_update(void *d, void *dxt, void *dyt, void *dzt, void *G11, void *G22, void *G33, void *G12, void *G13, void *G23, int *nel, int *lxp)
Definition: pc_jacobi.hip:106
__global__ void jacobi_kernel(T *__restrict__ du, const T *__restrict__ dxt, const T *__restrict__ dyt, const T *__restrict__ dzt, const T *__restrict__ G11, const T *__restrict__ G22, const T *__restrict__ G33, const T *__restrict__ G12, const T *__restrict__ G13, const T *__restrict__ G23, const int nel)
Definition: pc_jacobi.hip:40