ale_kinematics.c

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/*
 Copyright (c) 2026, The Neko Authors
 All rights reserved.
 
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   * Redistributions of source code must retain the above copyright
     notice, this list of conditions and the following disclaimer.
 
   * Redistributions in binary form must reproduce the above
     copyright notice, this list of conditions and the following
     disclaimer in the documentation and/or other materials provided
     with the distribution.
 
   * Neither the name of the authors nor the names of its
     contributors may be used to endorse or promote products derived
     from this software without specific prior written permission.
 
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 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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 COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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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 "ale_kinematics_kernel.cl.h"
 
typedef struct {
  real cx, cy, cz;
  real vtx, vty, vtz;
  real vax, vay, vaz;
  real px, py, pz;
  real r11, r12, r13;
  real r21, r22, r23;
  real r31, r32, r33;
} kinematics_params_t;
 
void add_kinematics_to_mesh_velocity_opencl(void *wx, void *wy, void *wz,
                                            void *x_ref, void *y_ref,
                                            void *z_ref, void *phi,
                                            void *x, void *y, void *z,
                                            kinematics_params_t kin_params,
                                            int n) {
  cl_int err;
 
  if (n < 1) return;
 
  if (ale_kinematics_program == NULL) {
    opencl_kernel_jit(ale_kinematics_kernel,
                      (cl_program *) &ale_kinematics_program);
  }
 
  cl_kernel kernel = clCreateKernel(ale_kinematics_program,
                                    "ale_add_kinematics_kernel", &err);
  CL_CHECK(err);
 
  CL_CHECK(clSetKernelArg(kernel, 0, sizeof(int), (void *) &n));
  CL_CHECK(clSetKernelArg(kernel, 1, sizeof(cl_mem), (void *) &wx));
  CL_CHECK(clSetKernelArg(kernel, 2, sizeof(cl_mem), (void *) &wy));
  CL_CHECK(clSetKernelArg(kernel, 3, sizeof(cl_mem), (void *) &wz));
  CL_CHECK(clSetKernelArg(kernel, 4, sizeof(cl_mem), (void *) &x_ref));
  CL_CHECK(clSetKernelArg(kernel, 5, sizeof(cl_mem), (void *) &y_ref));
  CL_CHECK(clSetKernelArg(kernel, 6, sizeof(cl_mem), (void *) &z_ref));
  CL_CHECK(clSetKernelArg(kernel, 7, sizeof(cl_mem), (void *) &phi));
  CL_CHECK(clSetKernelArg(kernel, 8, sizeof(cl_mem), (void *) &x));
  CL_CHECK(clSetKernelArg(kernel, 9, sizeof(cl_mem), (void *) &y));
  CL_CHECK(clSetKernelArg(kernel, 10, sizeof(cl_mem), (void *) &z));
  CL_CHECK(clSetKernelArg(kernel, 11, sizeof(kinematics_params_t),
                          (void *) &kin_params));
 
  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) glb_cmd_queue, kernel,
                                  1, NULL, &global_item_size,
                                  &local_item_size, 0, NULL, NULL));
 
  CL_CHECK(clReleaseKernel(kernel));
}
 
void compute_cheap_dist_opencl(void *d_d, void *x_d, void *y_d, void *z_d,
                               int lx, int ly, int lz, int nel,
                               int local_iters, void *nchange_d) {
  cl_int err;
 
  if (nel < 1) return;
 
  if (ale_kinematics_program == NULL) {
    opencl_kernel_jit(ale_kinematics_kernel,
                      (cl_program *) &ale_kinematics_program);
  }
 
  cl_kernel kernel = clCreateKernel(ale_kinematics_program,
                                    "compute_cheap_dist_kernel", &err);
  CL_CHECK(err);
 
  CL_CHECK(clSetKernelArg(kernel, 0, sizeof(cl_mem), (void *) &d_d));
  CL_CHECK(clSetKernelArg(kernel, 1, sizeof(cl_mem), (void *) &x_d));
  CL_CHECK(clSetKernelArg(kernel, 2, sizeof(cl_mem), (void *) &y_d));
  CL_CHECK(clSetKernelArg(kernel, 3, sizeof(cl_mem), (void *) &z_d));
  CL_CHECK(clSetKernelArg(kernel, 4, sizeof(int), (void *) &lx));
  CL_CHECK(clSetKernelArg(kernel, 5, sizeof(int), (void *) &ly));
  CL_CHECK(clSetKernelArg(kernel, 6, sizeof(int), (void *) &lz));
  CL_CHECK(clSetKernelArg(kernel, 7, sizeof(int), (void *) &nel));
  CL_CHECK(clSetKernelArg(kernel, 8, sizeof(int), (void *) &local_iters));
  CL_CHECK(clSetKernelArg(kernel, 9, sizeof(cl_mem), (void *) &nchange_d));
 
  const int nb = (nel + 256 - 1) / 256;
  const size_t global_item_size = 256 * nb;
  const size_t local_item_size = 256;
 
  CL_CHECK(clEnqueueNDRangeKernel((cl_command_queue) glb_cmd_queue, kernel,
                                  1, NULL, &global_item_size,
                                  &local_item_size, 0, NULL, NULL));
 
  CL_CHECK(clReleaseKernel(kernel));
}