public static Platforms Create()
{
Int32 platformsCount = 0;
OpenCLError.Validate(OpenCLDriver.clGetPlatformIDs(0, null, ref platformsCount));
CLPlatformID[] platforms = new CLPlatformID[platformsCount];
OpenCLError.Validate(OpenCLDriver.clGetPlatformIDs(platformsCount, platforms, ref platformsCount));
return(new Platforms(platforms));
}
/// <summary>
/// Setup OpenCL
/// </summary>
internal static void Setup()
{
try
{
// ADD YOUR CODE HERE
CLError err;
uint num_entries = 0;// get platform
CLPlatformID[] platforms = new CLPlatformID[5];
err = OpenCLDriver.clGetPlatformIDs(5, platforms, ref num_entries);
if (num_entries == 0)
{
throw new Exception("No Platform Entries found!");
}
//get device ID
CLDeviceID[] devices = new CLDeviceID[1];
err = OpenCLDriver.clGetDeviceIDs(platforms[0], CLDeviceType.GPU, 1, devices, ref num_entries);
// create context
ctx = OpenCLDriver.clCreateContext(null, 1, devices, null, IntPtr.Zero, ref err);
if (err != CLError.Success)
{
throw new Exception(err.ToString());
}
// create command queue
comQ = OpenCLDriver.clCreateCommandQueue(ctx, devices[0], 0, ref err);
if (err != CLError.Success)
{
throw new Exception(err.ToString());
}
// Compile Program
string[] progString = new string[1];
progString[0] = File.ReadAllText("..\\..\\prog.cl");
program = OpenCLDriver.clCreateProgramWithSource(ctx, 1, progString, null, ref err);
err = OpenCLDriver.clBuildProgram(program, 1, devices, "", null, IntPtr.Zero);
//create kernel
kernel_mult = OpenCLDriver.clCreateKernel(program, "multiply", ref err);
}
catch (Exception exc)
{
MessageBox.Show(exc.ToString());
}
}
/// <summary>
/// Get platform and device info
/// </summary>
internal static void GetInfo()
{
try
{
uint num_entries = 0;
uint num_entries_devices = 0;
// get device
CLPlatformID[] platforms = new CLPlatformID[5];
CLError err = OpenCLDriver.clGetPlatformIDs(5, platforms, ref num_entries);
if (err != CLError.Success)
{
throw new Exception(err.ToString());
}
if (num_entries == 0)
{
throw new Exception("No Platform Entries found!");
}
// get platform properties
byte[] buffer = new byte[1000];
GCHandle bufferGC = GCHandle.Alloc(buffer, GCHandleType.Pinned);
SizeT buffSize, buffSizeOut = new SizeT();
for (int i = 0; i < num_entries; i++)
{
buffSize = new CASS.Types.SizeT(1000);
err = OpenCLDriver.clGetPlatformInfo(platforms[i], CLPlatformInfo.Name, buffSize,
bufferGC.AddrOfPinnedObject(), ref buffSizeOut);
if (err != CLError.Success)
{
throw new Exception(err.ToString());
}
MessageBox.Show("Platform: " + i + "\n" + System.Text.Encoding.ASCII.GetString(buffer));
CLDeviceID[] devices = new CLDeviceID[2];
err = OpenCLDriver.clGetDeviceIDs(platforms[i], CLDeviceType.All, 2, devices, ref num_entries_devices);
if (err != CLError.Success)
{
throw new Exception(err.ToString());
}
string result = "";
err = OpenCLDriver.clGetDeviceInfo(devices[0], CLDeviceInfo.Vendor, buffSize,
bufferGC.AddrOfPinnedObject(), ref buffSizeOut);
result += CLDeviceInfo.Vendor.ToString() + ": " +
Encoding.ASCII.GetString(buffer, 0, buffSizeOut - 1) + "\n";
buffSize = new CASS.Types.SizeT(1000);
err = OpenCLDriver.clGetDeviceInfo(devices[0], CLDeviceInfo.Name, buffSize,
bufferGC.AddrOfPinnedObject(), ref buffSizeOut);
result += CLDeviceInfo.Name.ToString() + ": " +
Encoding.ASCII.GetString(buffer, 0, buffSizeOut - 1) + "\n";
int[] workDim = new int[1];
bufferGC = GCHandle.Alloc(workDim, GCHandleType.Pinned);
buffSize = new CASS.Types.SizeT(sizeof(int));
err = OpenCLDriver.clGetDeviceInfo(devices[0], CLDeviceInfo.MaxComputeUnits, buffSize,
bufferGC.AddrOfPinnedObject(), ref buffSizeOut);
result += CLDeviceInfo.MaxComputeUnits.ToString() + ": " + workDim[0] + "\n";
err = OpenCLDriver.clGetDeviceInfo(devices[0], CLDeviceInfo.MaxWorkItemDimensions,
workDim.Length * sizeof(int), bufferGC.AddrOfPinnedObject(), ref buffSizeOut);
result += CLDeviceInfo.MaxWorkItemDimensions.ToString() + ": " + workDim[0] + "\n";
SizeT[] sizeWI = new SizeT[workDim[0]];
bufferGC = GCHandle.Alloc(sizeWI, GCHandleType.Pinned);
err = OpenCLDriver.clGetDeviceInfo(devices[0], CLDeviceInfo.MaxWorkItemSizes, sizeWI.Length *
sizeof(int), bufferGC.AddrOfPinnedObject(), ref buffSizeOut);
result += CLDeviceInfo.MaxWorkItemSizes.ToString() + ": " +
sizeWI[0] + "x" + sizeWI[1] + "x" + sizeWI[2] + "\n";
MessageBox.Show(result, "Device");
}
}
catch (Exception exc)
{
MessageBox.Show(exc.ToString());
}
}