lpt_periodic_bc.c

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/*
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#ifdef __APPLE__
#include <OpenCL/cl.h>
#else
#include <CL/cl.h>
#endif
 
#include <device/device_config.h>
#include <device/opencl/check.h>
#include <device/opencl/jit.h>
#include <device/opencl/prgm_lib.h>
#include <lpt/bcknd/device/lpt_periodic_params.h>
 
#include "lpt_periodic_bc_kernel.cl.h"
 
void opencl_lpt_periodic_bc_wrap_translational(
    void *x, void *y, void *z, int *n, int *n_periodic_dirs,
    real *periodic_dir_x1, real *periodic_dir_y1, real *periodic_dir_z1,
    real *periodic_dir_x2, real *periodic_dir_y2, real *periodic_dir_z2,
    real *periodic_dir_x3, real *periodic_dir_y3, real *periodic_dir_z3,
    real *periodic_min1, real *periodic_min2, real *periodic_min3,
    real *periodic_max1, real *periodic_max2, real *periodic_max3,
    real *periodic_shift_x1, real *periodic_shift_y1,
    real *periodic_shift_z1, real *periodic_shift_x2,
    real *periodic_shift_y2, real *periodic_shift_z2,
    real *periodic_shift_x3, real *periodic_shift_y3,
    real *periodic_shift_z3, real *periodic_len1, real *periodic_len2,
    real *periodic_len3, void *strm) {
  cl_int err;
 
  if (*n < 1) return;
 
  if (lpt_periodic_bc_program == NULL) {
    opencl_kernel_jit(lpt_periodic_bc_kernel,
                      (cl_program *) &lpt_periodic_bc_program);
  }
 
  cl_kernel kernel =
    clCreateKernel(lpt_periodic_bc_program,
                   "lpt_periodic_bc_wrap_translational_kernel", &err);
  CL_CHECK(err);
 
  lpt_periodic_params prm;
  lpt_periodic_params_pack(&prm,
      periodic_dir_x1, periodic_dir_y1, periodic_dir_z1,
      periodic_dir_x2, periodic_dir_y2, periodic_dir_z2,
      periodic_dir_x3, periodic_dir_y3, periodic_dir_z3,
      periodic_min1, periodic_min2, periodic_min3,
      periodic_max1, periodic_max2, periodic_max3,
      periodic_shift_x1, periodic_shift_y1, periodic_shift_z1,
      periodic_shift_x2, periodic_shift_y2, periodic_shift_z2,
      periodic_shift_x3, periodic_shift_y3, periodic_shift_z3,
      periodic_len1, periodic_len2, periodic_len3);
 
  CL_CHECK(clSetKernelArg(kernel, 0, sizeof(cl_mem), (void *) &x));
  CL_CHECK(clSetKernelArg(kernel, 1, sizeof(cl_mem), (void *) &y));
  CL_CHECK(clSetKernelArg(kernel, 2, sizeof(cl_mem), (void *) &z));
  CL_CHECK(clSetKernelArg(kernel, 3, sizeof(int), n));
  CL_CHECK(clSetKernelArg(kernel, 4, sizeof(int), n_periodic_dirs));
  CL_CHECK(clSetKernelArg(kernel, 5, sizeof(lpt_periodic_params),
                          (void *) &prm));
 
  const int nb = ((*n) + 256 - 1) / 256;
  const size_t global_item_size = 256 * nb;
  const size_t local_item_size = 256;
 
  CL_CHECK(clEnqueueNDRangeKernel((cl_command_queue) strm, kernel,
                                  1, NULL, &global_item_size,
                                  &local_item_size, 0, NULL, NULL));
 
  CL_CHECK(clReleaseKernel(kernel));
}
 
void opencl_lpt_periodic_bc_wrap_rotational(
    void *x, void *y, void *z, int *n,
    real *theta_min, real *theta_max, real *theta_len,
    void *u, void *v, void *w,
    void *u_lag, void *v_lag, void *w_lag,
    void *u_laglag, void *v_laglag, void *w_laglag,
    void *acc_xlag, void *acc_ylag, void *acc_zlag,
    void *acc_xlaglag, void *acc_ylaglag, void *acc_zlaglag,
    void *strm) {
  cl_int err;
 
  if (*n < 1) return;
 
  if (lpt_periodic_bc_program == NULL) {
    opencl_kernel_jit(lpt_periodic_bc_kernel,
                      (cl_program *) &lpt_periodic_bc_program);
  }
 
  cl_kernel kernel =
    clCreateKernel(lpt_periodic_bc_program,
                   "lpt_periodic_bc_wrap_rotational_kernel", &err);
  CL_CHECK(err);
 
  int present_mask = 0;
  if (u != NULL && v != NULL) present_mask |= 1;
  if (u_lag != NULL && v_lag != NULL) present_mask |= 2;
  if (u_laglag != NULL && v_laglag != NULL) present_mask |= 4;
  if (acc_xlag != NULL && acc_ylag != NULL) present_mask |= 8;
  if (acc_xlaglag != NULL && acc_ylaglag != NULL) present_mask |= 16;
 
  /* Unbound slots still need a valid memory object */
  void *pairs[10] = { u, v, u_lag, v_lag, u_laglag, v_laglag,
                      acc_xlag, acc_ylag, acc_xlaglag, acc_ylaglag };
  for (int i = 0; i < 10; i++) {
    if (pairs[i] == NULL) pairs[i] = x;
  }
 
  CL_CHECK(clSetKernelArg(kernel, 0, sizeof(cl_mem), (void *) &x));
  CL_CHECK(clSetKernelArg(kernel, 1, sizeof(cl_mem), (void *) &y));
  CL_CHECK(clSetKernelArg(kernel, 2, sizeof(cl_mem), (void *) &z));
  CL_CHECK(clSetKernelArg(kernel, 3, sizeof(int), n));
  CL_CHECK(clSetKernelArg(kernel, 4, sizeof(real), theta_min));
  CL_CHECK(clSetKernelArg(kernel, 5, sizeof(real), theta_max));
  CL_CHECK(clSetKernelArg(kernel, 6, sizeof(real), theta_len));
  for (int i = 0; i < 10; i++) {
    CL_CHECK(clSetKernelArg(kernel, 7 + i, sizeof(cl_mem),
                            (void *) &pairs[i]));
  }
  CL_CHECK(clSetKernelArg(kernel, 17, sizeof(int), (void *) &present_mask));
 
  const int nb = ((*n) + 256 - 1) / 256;
  const size_t global_item_size = 256 * nb;
  const size_t local_item_size = 256;
 
  CL_CHECK(clEnqueueNDRangeKernel((cl_command_queue) strm, kernel,
                                  1, NULL, &global_item_size,
                                  &local_item_size, 0, NULL, NULL));
 
  CL_CHECK(clReleaseKernel(kernel));
}