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
}
public static extern CUResult cuD3D9CtxCreate(ref CUcontext pCtx, ref CUdevice pCuDevice, CUCtxFlags Flags, IntPtr pDxDevice);
public static extern CUResult cuD3D10CtxCreate(ref CUcontext pCtx, ref CUdevice pCuDevice, uint Flags, IntPtr pDxDevice);
public static extern CUResult cuCtxPopCurrent_v2(ref CUcontext pctx);
public static extern CUResult cuCtxPushCurrent_v2(CUcontext ctx);
public void StopFloating(CUcontext pctx)
{
this.LastError = CUDADriver.cuCtxPushCurrent(pctx);
}
public static extern CUResult cuCtxDisablePeerAccess(CUcontext peerContext);
public static extern CUResult cuCtxDestroy_v2(CUcontext ctx);
public static extern CUResult cuCtxDetach(CUcontext ctx);
public static extern CUResult cuCtxAttach(ref CUcontext pctx, uint flags);
public static extern CUResult cuCtxCreate(ref CUcontext pctx, uint flags, CUdevice dev);
public static extern CUResult cuPointerGetAttribute(ref CUcontext ctx, CUPointerAttribute attribute, CUdeviceptr ptr);
public static extern CUResult cuMemcpyPeerAsync(CUdeviceptr dstDevice, CUcontext dstContext, CUdeviceptr srcDevice, CUcontext srcContext, SizeT ByteCount, CUstream hStream);
public static extern CUResult cuMemcpyPeer (CUdeviceptr dstDevice, CUcontext dstContext, CUdeviceptr srcDevice, CUcontext srcContext, SizeT ByteCount);
public CUDAContextSynchronizer(CUcontext ctx)
{
this.ctx = ctx;
}
public static extern CUResult cuCtxGetCurrent(ref CUcontext pctx);
//private CUcontext _pctx;
public CUcontext MakeFloating()
{
CUcontext pctx = new CUcontext();
this.LastError = CUDADriver.cuCtxPopCurrent(ref pctx);
return pctx;
}
public static extern CUResult cuCtxSetCurrent(CUcontext pctx);
public static extern CUResult cuGLCtxCreate(ref CUcontext pCtx, uint Flags, CUdevice device);
public static extern CUResult cuCtxEnablePeerAccess(CUcontext peerContext, uint Flags);