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Revision as of 02:57, 10 January 2010 by Moriarty (talk | contribs) (→‎OpenCL C++)

Welcome

This is my dev wiki for the DSI OpenCL… Right know i am more focused on the OpenCL library and the openCL language that is used to create the kernel.

I will make sure that i explain how it works and what is happining so that if anyone wants to compile it on their computer they will be confident that it will work correctly




== THIS CODE DOES NOT RUN BUT DOES COMPILE USE AT OWN RISK ==


OpenCL C++

  1. include <oclUtils.h>
  2. include <cstdlib>
  3. include <time.h>

const char* cSourceFile = "KeyPattern.cl";

cl_uchar16 encTitleKey; cl_uchar16 encData; cl_uchar16 decData; cl_uchar16 IV = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}; cl_uchar16 answer = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}; cl_uint iter;

cl_mem encTitleKeyMem; cl_mem encDataMem; cl_mem decDataMem; cl_mem IVMem; cl_mem answerMem;

cl_context cxGPUContext; // OpenCL context cl_command_queue cqCommandQue; // OpenCL command que cl_device_id* cdDevices; // OpenCL device list cl_program cpProgram; // OpenCL program cl_kernel ckKernel; // OpenCL kernel size_t szGlobalWorkSize = 4294967295; //Max Integer size_t szLocalWorkSize=256; // 1D var for # of work items in the work group size_t szParmDataBytes; // Byte size of context information size_t szKernelLength; // Byte size of kernel code char* cPathAndName = NULL; // var for full paths to data, src, etc. char* cSourceCL = NULL; // Buffer to hold source for compilation

cl_int Err1; cl_int Err2; cl_int Err3; cl_int Err4; cl_int Err5;

bool checkAnswer(cl_uchar16); void Cleanup (int iExitCode);

int main(int argc, char **argv) { int itime = time(NULL); srand(itime); // start logs 

   shrSetLogFileName ("oclVectorAdd.txt");
   shrLog(LOGBOTH, 0.0, "starting TheKeyMaker running %i at a time with a seed of %i ", szGlobalWorkSize,itime);


cxGPUContext = clCreateContextFromType(0, CL_DEVICE_TYPE_GPU, NULL, NULL, &Err1); shrLog(LOGBOTH, 0.0, "clCreateContextFromType...\n"); 

   if (Err1 != CL_SUCCESS)
   {

       shrLog(LOGBOTH, 0.0, "Error in clCreateContextFromType, Line %u in file %s !!!\n\n", __LINE__, __FILE__);
       Cleanup(EXIT_FAILURE);
   }

Err1 = clGetContextInfo(cxGPUContext, CL_CONTEXT_DEVICES, 0, NULL, &szParmDataBytes); 

   cdDevices = (cl_device_id*)malloc(szParmDataBytes);
   Err1 |= clGetContextInfo(cxGPUContext, CL_CONTEXT_DEVICES, szParmDataBytes, cdDevices, NULL);

shrLog(LOGBOTH, 0.0, "clGetContextInfo...\n"); if (Err1 != CL_SUCCESS) 

   {
       shrLog(LOGBOTH, 0.0, "Error in clGetContextInfo, Line %u in file %s !!!\n\n", __LINE__, __FILE__);
       Cleanup(EXIT_FAILURE);
   }

cqCommandQue = clCreateCommandQueue(cxGPUContext, cdDevices[0], 0, &Err1); 

   shrLog(LOGBOTH, 0.0, "clCreateCommandQueue...\n"); 
   if (Err1 != CL_SUCCESS)
   {
       shrLog(LOGBOTH, 0.0, "Error in clCreateCommandQueue, Line %u in file %s !!!\n\n", __LINE__, __FILE__);
       Cleanup(EXIT_FAILURE);
   }

/* cl_mem encTitleKeyMem; cl_mem encDataMem; cl_mem decDataMem; cl_mem IVMem; cl_mem answerMem; */

encTitleKeyMem = clCreateBuffer(cxGPUContext, CL_MEM_READ_ONLY, sizeof(cl_uchar16) , NULL, &Err1); 

   encDataMem = clCreateBuffer(cxGPUContext, CL_MEM_READ_ONLY, sizeof(cl_uchar16),  NULL, &Err2);
   decDataMem = clCreateBuffer(cxGPUContext, CL_MEM_READ_ONLY, sizeof(cl_uchar16) , NULL, &Err3);

IVMem = clCreateBuffer(cxGPUContext, CL_MEM_READ_ONLY, sizeof(cl_uchar16), NULL, &Err4); 

   answerMem = clCreateBuffer(cxGPUContext, CL_MEM_WRITE_ONLY, sizeof(cl_uchar16) , NULL, &Err5);

Err1|=Err2; Err1|=Err3; Err1|=Err4; Err1|=Err5;

if (Err1 != CL_SUCCESS) 

   {
       shrLog(LOGBOTH, 0.0, "Error in clCreateBuffer, Line %u in file %s !!!\n\n", __LINE__, __FILE__);
       Cleanup(EXIT_FAILURE);
   }

shrLog(LOGBOTH, 0.0, "oclLoadProgSource (%s)...\n", cSourceFile); cPathAndName = shrFindFilePath(cSourceFile, argv[0]); 

   cSourceCL = oclLoadProgSource(cPathAndName, "", &szKernelLength);

shrLog(LOGBOTH, 0.0, "Source\n \n %s \n",cSourceCL);

cpProgram = clCreateProgramWithSource(cxGPUContext, 1, (const char **)&cSourceCL, &szKernelLength, &Err1); shrLog(LOGBOTH, 0.0, "clCreateProgramWithSource...\n"); 

   if (Err1 != CL_SUCCESS)
   {
       shrLog(LOGBOTH, 0.0, "Error in clCreateProgramWithSource, Line %u in file %s !!!\n\n", __LINE__, __FILE__);
       Cleanup(EXIT_FAILURE);
   }

clBuildProgram(cpProgram, 0, NULL, NULL, NULL, &Err1); 

   shrLog(LOGBOTH, 0.0, "clBuildProgram...\n"); 
   if (Err1 != CL_SUCCESS)
   {
       shrLog(LOGBOTH, 0.0, "Error in clBuildProgram, Line %u in file %s !!!\n\n", __LINE__, __FILE__);
       Cleanup(EXIT_FAILURE);
   }

ckKernel = clCreateKernel(cpProgram, "program", &Err1); shrLog(LOGBOTH, 0.0, "clCreateKernel (program)...\n"); 

   if (Err1 != CL_SUCCESS)
   {
       shrLog(LOGBOTH, 0.0, "Error in clCreateKernel, Line %u in file %s !!!\n\n", __LINE__, __FILE__);

Cleanup(EXIT_FAILURE); 

   }

//cl_mem encTitleKeyMem; //cl_mem encDataMem; //cl_mem decDataMem; //cl_mem IVMem; //cl_mem answerMem;

iter = rand(); Err1 = clSetKernelArg(ckKernel, 0, sizeof(cl_mem), (void*)&encTitleKeyMem); 

   Err1 |= clSetKernelArg(ckKernel, 1, sizeof(cl_mem), (void*)&encDataMem);
   Err1 |= clSetKernelArg(ckKernel, 2, sizeof(cl_mem), (void*)&decDataMem);
   Err1 |= clSetKernelArg(ckKernel, 3, sizeof(cl_mem), (void*)&IVMem);
   Err1 |= clSetKernelArg(ckKernel, 4, sizeof(cl_mem), (void*)&answerMem);
   Err1 |= clSetKernelArg(ckKernel, 5, sizeof(cl_int), (void*)&iter);

shrLog(LOGBOTH, 0.0, "clSetKernelArg 0 - 5...\n\n"); 

   if (Err1 != CL_SUCCESS)
   {
       shrLog(LOGBOTH, 0.0, "Error in clSetKernelArg, Line %u in file %s !!!\n\n", __LINE__, __FILE__);
       Cleanup(EXIT_FAILURE);
   }

/* cl_mem encTitleKeyMem; cl_mem encDataMem; cl_mem decDataMem; cl_mem IVMem; */

Err1 = clEnqueueWriteBuffer(cqCommandQue, encTitleKeyMem, CL_FALSE, 0, sizeof(cl_uchar16), encTitleKey, 0, NULL, NULL); 

   Err1 |= clEnqueueWriteBuffer(cqCommandQue, encDataMem, CL_FALSE, 0, sizeof(cl_uchar16), encData, 0, NULL, NULL);
   Err1 |= clEnqueueWriteBuffer(cqCommandQue, decDataMem, CL_FALSE, 0, sizeof(cl_uchar16), decData, 0, NULL, NULL);
   Err1 |= clEnqueueWriteBuffer(cqCommandQue, IVMem, CL_FALSE, 0, sizeof(cl_uchar16), IV, 0, NULL, NULL);
   Err1 |= clEnqueueWriteBuffer(cqCommandQue, answerMem, CL_FALSE, 0, sizeof(cl_uchar16), answer, 0, NULL, NULL);

shrLog(LOGBOTH, 0.0, "clEnqueueWriteBuffer (SrcA and SrcB)...\n"); 

   if (Err1 != CL_SUCCESS)
   {
       shrLog(LOGBOTH, 0.0, "Error in clEnqueueWriteBuffer, Line %u in file %s !!!\n\n", __LINE__, __FILE__);
       Cleanup(EXIT_FAILURE);
   }

shrLog(LOGBOTH, 0.0, "running..."); while(true){

clEnqueueNDRangeKernel(cqCommandQue, ckKernel, 1, NULL, &szGlobalWorkSize, &szLocalWorkSize, 0, NULL, NULL);


clEnqueueReadBuffer(cqCommandQue, answerMem, CL_TRUE, 0, sizeof(cl_uchar16), answer, 0, NULL, NULL); if(checkAnswer(answer)) break;

iter = rand(); clSetKernelArg(ckKernel, 5, sizeof(cl_int), (void*)&iter); }

if(checkAnswer(answer)) shrLog(LOGBOTH, 0.0, "found");

Cleanup(EXIT_SUCCESS); }

void Cleanup (int iExitCode) { 

   // Cleanup allocated objects
   shrLog(LOGBOTH, 0.0, "Starting Cleanup...\n\n");
   if(cdDevices)free(cdDevices);
   if(cPathAndName)free(cPathAndName);
   if(cSourceCL)free(cSourceCL);

if(ckKernel)clReleaseKernel(ckKernel); 

   if(cpProgram)clReleaseProgram(cpProgram);
   if(cqCommandQue)clReleaseCommandQueue(cqCommandQue);
   if(cxGPUContext)clReleaseContext(cxGPUContext);

/* cl_mem encTitleKeyMem; cl_mem encDataMem; cl_mem decDataMem; cl_mem IVMem; cl_mem answerMem;

  • /
   if(encTitleKeyMem)clReleaseMemObject(encTitleKeyMem);
   if(encDataMem)clReleaseMemObject(encDataMem);
   if(decDataMem)clReleaseMemObject(decDataMem);
   if(IVMem)clReleaseMemObject(IVMem);
   if(answerMem)clReleaseMemObject(answerMem);



   shrLog(LOGBOTH | CLOSELOG, 0.0, "oclVectorAdd.exe Exiting...\nPress <Enter> to Quit\n");
   getchar();
   
   exit (iExitCode);

}

bool checkAnswer(cl_uchar16 answer){ for(int i =0;i<16;i++) if(answer[i]!=0) return true; return false; }

OpenCL CL

__kernel void keyMaker(__global uchar16 encTitleKey,__global uchar16 encData, __global uchar16 decData,__global uchar16 IV,__global uchar16 answer,__global int iterator){ }

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