Bugfix: detection of GPU vram over 4GB

src/com/sheepit/client/hardware/gpu/CUDA.java

@@ -33,6 +33,6 @@ public interface CUDA extends Library {
 	
 	public int cuDeviceGetName(byte[] name, int len, int dev);
 	
-	// http://en.wikipedia.org/wiki/Java_Native_Access
+	public int cuDeviceTotalMem_v2(LongByReference bytes, int dev);
 	public int cuDeviceTotalMem(LongByReference bytes, int dev);
 }

src/com/sheepit/client/hardware/gpu/GPU.java

@@ -91,7 +91,13 @@ public class GPU {
 			}
 			
 			LongByReference ram = new LongByReference();
+			try {
+				result = cudalib.cuDeviceTotalMem_v2(ram, num);
+			}
+			catch (UnsatisfiedLinkError e) {
+				// fall back to old function
 				result = cudalib.cuDeviceTotalMem(ram, num);
+			}
 			
 			if (result != CUresult.CUDA_SUCCESS) {
 				System.out.println("GPU::generate cuDeviceTotalMem failed (ret: " + CUresult.stringFor(result) + ")");