Clhelper Error Log
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documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice error log meaning shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #include "cl-helper.h" #include
OpenCL 1. Particlefilter OpenCL a) Runtime work group size selection based on device limits b) Several bugs of kernel fixed c) Initialize all arrays on host side and device bluehost 502 bad gateway side d) Fix objxy_GPU array across boundary access on device objxy_GPU =
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clCreateBuffer(context, CL_MEM_READ_WRITE, 2*sizeof (int) *countOnes, NULL, &err); and err = clEnqueueWriteBuffer(cmd_queue, objxy_GPU, 1, 0, 2*sizeof (int) *countOnes,
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objxy, 0, 0, 0); Thanks Maxim Perminov from Intel. e) #define PI 3.1415926535897932 in ex_particle_OCL_naive_seq.cpp f) put -lOpenCL just behind -L$(OPENCL_LIB) in Makefile. g) delete an useless function tex1Dfetch() https://github.com/hpc12/lec5-demo/blob/master/cl-helper.c from particle_float.cl. h) add single precision version! 2. B+Tree OpenCL Thanks Alexey Kravets and Elena Stohr from CARP project a) Replace CUDA function __syncthreads() with OpenCL barrier(CLK_LOCAL_MEM_FENCE) in kernel file 3. Heartwall OpenCL a) Lower work item size from 512 to 256 (Better compatibility with AMD GPU) b) Several bugs fixed on kernel codes c) Several bugs https://www.cs.virginia.edu/~skadron/wiki/rodinia/index.php/Rodinia2_3changelog fixed on host codes 4. BSF OpenCL Thanks Daniel Lustig from Princeton and Elena Stohr from CARP project. a). Replace all bool with char since bool is NOT a valid type for OpenCL arguments . b). -lOpenCL just behind -L$(OPENCL_LIB) in Makefile. (gcc-4.6+ compatible) c). remove NVIDIA-specific parameters and decrease thread block size for Better compatibility with AMD GPU BFS/CLHelper.h: 240 -std::string options= "-cl-nv-verbose"; +//std::string options= "-cl-nv-verbose"; // doesn't work on AMD machines - resultCL = clBuildProgram(oclHandles.program, deviceListSize, oclHandles.devices, options.c_str(), NULL,? NULL); + resultCL = clBuildProgram(oclHandles.program, deviceListSize, oclHandles.devices, NULL, NULL,? NULL); bfs.cpp: -#define MAX_THREADS_PER_BLOCK 512 +#define MAX_THREADS_PER_BLOCK 256 // 512 is too big for my AMD Fusion GPU d) Correct bad mallocs BFS/CLHelper.h 204: -oclHandles.devices = (cl_device_id *)malloc(deviceListSize); +oclHandles.devices = (cl_device_id *)malloc(deviceListSize * sizeof(cl_device_id)); 414: - d_mem = clCreateBuffer(oclHandles.context, CL_MEM_READ_WRITE, size, h_mem_ptr, &oclHandles.cl_status); + d_mem = clCreateBuffer(oclHandles.context, CL_MEM_READ_WRITE | CL_MEM_COPY_HOST_PTR, size, h_mem_ptr, &oclHandles.cl_status); 428: - d_mem = clCreateBuffer(oclHandles.context, CL_MEM_READ_ONLY, size, h_mem_ptr, &oclHandles.cl_status); +d_mem = clCreateBuffer(oclHandles.context, CL_MEM_WRITE_ONLY | CL_MEM_COPY_HOST_PTR, size, h_mem_ptr, &oclHandles.cl_status); 466: h_mem_pinned = (cl_float *)clEnqueueMapBuffer(oclHandles.queue, d_mem_pinned, CL_TRUE,? \ - CL_MAP_WRITE,
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