public HuForceDirectedLayout(int steps)
{
#if !DEBUG
try
{
#endif
CUDADriver.cuInit(0);
dev = new CUdevice();
CUDADriver.cuDeviceGet(ref dev, 0);
ctx = new CUcontext();
CUDADriver.cuCtxCreate(ref ctx, 0, dev);
mod = new CUmodule();
CUDADriver.cuModuleLoad(ref mod, "BarnesHut.cubin");
prop = new CUDeviceProperties();
CUDADriver.cuDeviceGetProperties(ref prop, dev);
int version = 0;
CUDADriver.cuDriverGetVersion(ref version);
string caps = "";
GASS.CUDA.CUDARuntime.cudaRuntimeGetVersion(ref version);
caps += "\tClock rate = " + prop.clockRate/1000000 + " MHz\n";
caps += "\tMemory size = " + prop.totalConstantMemory/1024 + " KB\n";
caps += "\tThreads per block = " + prop.maxThreadsPerBlock + "\n";
caps += "\tWarp size = " + prop.SIMDWidth + "\n";
caps += "\tCUDA version = " + version + "\n";
Logger.AddMessage(LogEntryType.Info, "Successfully initialized CUDA GPU computation\n"+caps);
#if !DEBUG
}
catch(Exception ex)
{
Logger.AddMessage(LogEntryType.Warning, "CUDA not available, falling back to CPU. Exception was: " + ex.Message);
CUDAEnabled = false;
}
#endif
}
private void InitCudaModule()
{
cuda = gpuKernel.cuda;
//cuda = new CUDA(0, true);
//cuCtx = cuda.CreateContext(0, CUCtxFlags.MapHost);
//cuda.SetCurrentContext(cuCtx);
string modluePath = Path.Combine(Environment.CurrentDirectory, cudaModuleName);
if (!File.Exists(modluePath))
{
throw new ArgumentException("Failed access to cuda module" + modluePath);
}
cuModule = cuda.LoadModule(modluePath);
cuFuncFindMaxIMinJ = cuda.GetModuleFunction(funcFindMaxIMinJ);
cuFuncUpdateG = cuda.GetModuleFunction(funcUpdateGFunc);
}
private void InitCudaModule()
{
cuda = new CUDA(0, true);
cuModule = cuda.LoadModule(Path.Combine(Environment.CurrentDirectory, cudaModuleName));
cuFuncDotProd = cuda.GetModuleFunction(cudaProductKernelName);
cuFuncGradFinalize = cuda.GetModuleFunction(cudaGradFinalizeName);
cuFuncComputeBBstep = cuda.GetModuleFunction(cudaComputeBBStepName);
cuFuncObjSquareW = cuda.GetModuleFunction(cudaObjWName);
cuFuncObjSquareAlpha = cuda.GetModuleFunction(cudaObjAlphaName);
cuFuncUpdateW = cuda.GetModuleFunction(cudaUpdateW);
cuFuncUpdateAlpha = cuda.GetModuleFunction(cudaUpdateAlphaName);
cuFuncMaxNorm = cuda.GetModuleFunction(cudaMaxNormName);
}
internal static void SetTextureMemory(CUDA cuda, CUmodule cuModule, ref CUtexref texture, string texName, float[] data, ref CUdeviceptr memPtr)
{
texture = cuda.GetModuleTexture(cuModule, texName);
memPtr = cuda.CopyHostToDevice(data);
cuda.SetTextureAddress(texture, memPtr, (uint)(sizeof(float) * data.Length));
}
private void InitCudaModule()
{
string modluePath = Path.Combine(Environment.CurrentDirectory, cudaModuleName);
if (!File.Exists(modluePath))
throw new ArgumentException("Failed access to cuda module" + modluePath);
cuModule = cuda.LoadModule(modluePath);
cuFuncDense = cuda.GetModuleFunction(funcName);
}
public static extern CUResult cuModuleUnload(CUmodule hmod);
//private double ComputeObj(float[] w, float[] alpha, Problem<SparseVec> sub_prob, float[] diag)
//{
// double v = 0, v1=0;
// int nSV = 0;
// for (int i = 0; i < w.Length; i++)
// {
// v += w[i] * w[i];
// v1 += 0.5*w[i] * w[i];
// }
// for (int i = 0; i < alpha.Length; i++)
// {
// sbyte y_i = (sbyte)sub_prob.Y[i];
// //original line
// //v += alpha[i] * (alpha[i] * diag[GETI(y_i, i)] - 2);
// v += alpha[i] * (alpha[i] * diag[y_i + 1] - 2);
// v1 += 0.5* alpha[i] * (alpha[i] * diag[y_i + 1] - 2);
// if (alpha[i] > 0) ++nSV;
// }
// v = v / 2;
// // Debug.WriteLine("Objective value = {0}", v);
// // Debug.WriteLine("nSV = {0}", nSV);
// return v;
//}
protected void InitCudaModule()
{
cuda = new CUDA(0, true);
cuModule = cuda.LoadModule(Path.Combine(Environment.CurrentDirectory, cudaModuleName));
cuFuncDotProd = cuda.GetModuleFunction(cudaProductKernelName);
cuFuncSolver = cuda.GetModuleFunction(cudaSolveL2SVM);
cuFuncUpdateW = cuda.GetModuleFunction(cudaUpdateW);
}
public static extern CUResult cuModuleLoadDataEx(ref CUmodule module, [In] byte[] image, uint numOptions, [In] CUJITOption[] options, [In] IntPtr[] optionValues);
public static extern CUResult cuModuleLoadFatBinary(ref CUmodule module, [In] byte[] fatCubin);
public static extern CUResult cuModuleLoadData(ref CUmodule module, [In] byte[] image);
public static extern CUResult cuModuleLoad(ref CUmodule module, string fname);
public static extern CUResult cuModuleGetTexRef(ref CUtexref pTexRef, CUmodule hmod, string name);
public static extern CUResult cuModuleGetGlobal(ref CUdeviceptr dptr, ref SizeT bytes, CUmodule hmod, string name);
public static extern CUResult cuModuleGetFunction(ref CUfunction hfunc, CUmodule hmod, string name);