zero_dirichlet.c

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/*
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 All rights reserved.
 
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   * 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.
 
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     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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#ifdef __APPLE__
#include <OpenCL/cl.h>
#else
#include <CL/cl.h>
#endif
 
#include <stdio.h>
#include <device/device_config.h>
#include <device/opencl/jit.h>
#include <device/opencl/prgm_lib.h>
#include <device/opencl/check.h>
 
#include "zero_dirichlet_kernel.cl.h"
 
void opencl_zero_dirichlet_apply_scalar(void *msk, void *x, int *m,
                                        cl_command_queue cmd_queue) {
 
  cl_int err;
 
  if (zero_dirichlet_program == NULL)
    opencl_kernel_jit(zero_dirichlet_kernel, (cl_program *) &zero_dirichlet_program);
 
  cl_kernel kernel = clCreateKernel(zero_dirichlet_program,
                                    "zero_dirichlet_apply_scalar_kernel", &err);
  CL_CHECK(err);
 
  CL_CHECK(clSetKernelArg(kernel, 0, sizeof(cl_mem), (void *) &msk));
  CL_CHECK(clSetKernelArg(kernel, 1, sizeof(cl_mem), (void *) &x));
  CL_CHECK(clSetKernelArg(kernel, 2, sizeof(int), m));
 
  const int nb = ((*m) + 256 - 1) / 256;
  const size_t global_item_size = 256 * nb;
  const size_t local_item_size = 256;
 
  CL_CHECK(clEnqueueNDRangeKernel(cmd_queue, kernel, 1, NULL,
                                  &global_item_size, &local_item_size,
                                  0, NULL, NULL));
}
 
void opencl_zero_dirichlet_apply_vector(void *msk, void *x, void *y,
                                        void *z, int *m,
                                        cl_command_queue cmd_queue) {
  cl_int err;
 
  if (zero_dirichlet_program == NULL)
    opencl_kernel_jit(zero_dirichlet_kernel, (cl_program *) &zero_dirichlet_program);
 
  cl_kernel kernel = clCreateKernel(zero_dirichlet_program,
                                    "zero_dirichlet_apply_vector_kernel", &err);
  CL_CHECK(err);
 
  CL_CHECK(clSetKernelArg(kernel, 0, sizeof(cl_mem), (void *) &msk));
  CL_CHECK(clSetKernelArg(kernel, 1, sizeof(cl_mem), (void *) &x));
  CL_CHECK(clSetKernelArg(kernel, 2, sizeof(cl_mem), (void *) &y));
  CL_CHECK(clSetKernelArg(kernel, 3, sizeof(cl_mem), (void *) &z));
  CL_CHECK(clSetKernelArg(kernel, 4, sizeof(int), m));
 
  const int nb = ((*m) + 256 - 1) / 256;
  const size_t global_item_size = 256 * nb;
  const size_t local_item_size = 256;
 
  CL_CHECK(clEnqueueNDRangeKernel(cmd_queue, kernel, 1, NULL,
                                  &global_item_size, &local_item_size,
                                  0, NULL, NULL));
 
}