Neko  0.8.1
A portable framework for high-order spectral element flow simulations
opr_cfl.c
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34 
35 #ifdef __APPLE__
36 #include <OpenCL/cl.h>
37 #else
38 #include <CL/cl.h>
39 #endif
40 
41 #include <stdio.h>
42 #include <stdlib.h>
43 #include <math.h>
44 #include <device/device_config.h>
45 #include <device/opencl/jit.h>
46 #include <device/opencl/prgm_lib.h>
47 #include <device/opencl/check.h>
48 
49 #include "cfl_kernel.cl.h"
50 
54 real opencl_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  cl_int err;
61  cl_event kern_wait;
62  int i;
63  if (cfl_program == NULL)
64  opencl_kernel_jit(cfl_kernel, (cl_program *) &cfl_program);
65 
66  const size_t global_item_size = 256 * (*nel);
67  const size_t local_item_size = 256;
68 
69  real * cfl = (real *) malloc((*nel) * sizeof(real));
70  cl_mem cfl_d = clCreateBuffer(glb_ctx, CL_MEM_READ_WRITE,
71  (*nel) * sizeof(real), NULL, &err);
72  CL_CHECK(err);
73 
74 #define STR(X) #X
75 #define CASE(LX) \
76  case LX: \
77  { \
78  cl_kernel kernel = clCreateKernel(cfl_program, \
79  STR(cfl_kernel_lx##LX), &err); \
80  CL_CHECK(err); \
81  \
82  CL_CHECK(clSetKernelArg(kernel, 0, sizeof(real), dt)); \
83  CL_CHECK(clSetKernelArg(kernel, 1, sizeof(cl_mem), (void *) &u)); \
84  CL_CHECK(clSetKernelArg(kernel, 2, sizeof(cl_mem), (void *) &v)); \
85  CL_CHECK(clSetKernelArg(kernel, 3, sizeof(cl_mem), (void *) &w)); \
86  CL_CHECK(clSetKernelArg(kernel, 4, sizeof(cl_mem), (void *) &drdx)); \
87  CL_CHECK(clSetKernelArg(kernel, 5, sizeof(cl_mem), (void *) &dsdx)); \
88  CL_CHECK(clSetKernelArg(kernel, 6, sizeof(cl_mem), (void *) &dtdx)); \
89  CL_CHECK(clSetKernelArg(kernel, 7, sizeof(cl_mem), (void *) &drdy)); \
90  CL_CHECK(clSetKernelArg(kernel, 8, sizeof(cl_mem), (void *) &dsdy)); \
91  CL_CHECK(clSetKernelArg(kernel, 9, sizeof(cl_mem), (void *) &dtdy)); \
92  CL_CHECK(clSetKernelArg(kernel, 10, sizeof(cl_mem), (void *) &drdz)); \
93  CL_CHECK(clSetKernelArg(kernel, 11, sizeof(cl_mem), (void *) &dsdz)); \
94  CL_CHECK(clSetKernelArg(kernel, 12, sizeof(cl_mem), (void *) &dtdz)); \
95  CL_CHECK(clSetKernelArg(kernel, 13, sizeof(cl_mem), (void *) &dr_inv)); \
96  CL_CHECK(clSetKernelArg(kernel, 14, sizeof(cl_mem), (void *) &ds_inv)); \
97  CL_CHECK(clSetKernelArg(kernel, 15, sizeof(cl_mem), (void *) &dt_inv)); \
98  CL_CHECK(clSetKernelArg(kernel, 16, sizeof(cl_mem), (void *) &jacinv)); \
99  CL_CHECK(clSetKernelArg(kernel, 17, sizeof(cl_mem), (void *) &cfl_d)); \
100  \
101  CL_CHECK(clEnqueueNDRangeKernel((cl_command_queue) glb_cmd_queue, \
102  kernel, 1, NULL, &global_item_size, \
103  &local_item_size, 0, NULL, &kern_wait)); \
104  } \
105  break
106 
107  switch(*lx) {
108  CASE(2);
109  CASE(3);
110  CASE(4);
111  CASE(5);
112  CASE(6);
113  CASE(7);
114  CASE(8);
115  CASE(9);
116  CASE(10);
117  CASE(11);
118  CASE(12);
119  }
120 
121  CL_CHECK(clEnqueueReadBuffer((cl_command_queue) glb_cmd_queue,
122  cfl_d, CL_TRUE, 0, (*nel) * sizeof(real),
123  cfl, 1, &kern_wait, NULL));
124 
125  real cfl_max = 0.0;
126  for (i = 0; i < (*nel); i++) {
127  cfl_max = fmax(cfl_max, cfl[i]);
128  }
129 
130  free(cfl);
131  CL_CHECK(clReleaseMemObject(cfl_d));
132 
133  return cfl_max;
134 
135 }
dt
__global__ void const T *__restrict__ const T *__restrict__ const T *__restrict__ const T *__restrict__ dt
Definition: cdtp_kernel.h:112
i
const int i
Definition: cdtp_kernel.h:132
cfl_kernel
__global__ void cfl_kernel(const T dt, const T *__restrict__ u, const T *__restrict__ v, const T *__restrict__ w, const T *__restrict__ drdx, const T *__restrict__ dsdx, const T *__restrict__ dtdx, const T *__restrict__ drdy, const T *__restrict__ dsdy, const T *__restrict__ dtdy, const T *__restrict__ drdz, const T *__restrict__ dsdz, const T *__restrict__ dtdz, const T *__restrict__ dr_inv, const T *__restrict__ ds_inv, const T *__restrict__ dt_inv, const T *__restrict__ jacinv, T *__restrict__ cfl_h)
Definition: cfl_kernel.h:87
jacinv
__global__ void 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: conv1_kernel.h:148
drdx
__global__ void 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: conv1_kernel.h:139
dtdx
__global__ void 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: conv1_kernel.h:141
u
__global__ void const T *__restrict__ u
Definition: conv1_kernel.h:132
dtdz
__global__ void 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: conv1_kernel.h:147
dsdx
__global__ void 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: conv1_kernel.h:140
dtdy
__global__ void 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: conv1_kernel.h:144
dsdz
__global__ void 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__ dsdz
Definition: conv1_kernel.h:146
dsdy
__global__ void 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: conv1_kernel.h:143
drdy
__global__ void 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__ drdy
Definition: conv1_kernel.h:142
drdz
__global__ void 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__ drdz
Definition: conv1_kernel.h:145
w
__global__ void const T *__restrict__ const T *__restrict__ const T *__restrict__ w
Definition: lambda2_kernel.h:244
v
__global__ void const T *__restrict__ const T *__restrict__ v
Definition: lambda2_kernel.h:243
device_config.h
real
double real
Definition: device_config.h:12
glb_cmd_queue
void * glb_cmd_queue
glb_ctx
void * glb_ctx
opencl_kernel_jit
void opencl_kernel_jit(const char *kernel, cl_program *program)
Definition: jit.c:50
operators::cfl
real(kind=rp) function, public cfl(dt, u, v, w, Xh, coef, nelv, gdim)
Definition: operators.f90:266
CL_CHECK
#define CL_CHECK(err)
Definition: check.h:12
CASE
#define CASE(LX)
opencl_cfl
real opencl_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.c:54
cfl_d
real * cfl_d
Definition: opr_cfl.cu:49
prgm_lib.h
cfl_program
void * cfl_program