Modification for GPU

src/memory/CudaMemory.cu

@@ -276,6 +276,25 @@ void CudaMemory::deviceToHost()
 	CUDA_SAFE_CALL(cudaMemcpy(hm,dm,sz,cudaMemcpyDeviceToHost));
 }
 
+/*! \brief Return a readable pointer with your data
+ *
+ * \return a readable pointer with your data
+ *
+ */
+
+void CudaMemory::deviceToHost(size_t start, size_t stop)
+{
+	// allocate an host memory if not allocated
+	if (hm == NULL)
+		allocate_host(sz);
+
+	//! copy from device to host memory
+
+	CUDA_SAFE_CALL(cudaMemcpy(((unsigned char *)hm)+start,((unsigned char *)dm)+start,(stop-start),cudaMemcpyDeviceToHost));
+}
+
+
+
 /*! \brief Return a readable pointer with your data
  *
  * \return a readable pointer with your data
@@ -302,7 +321,8 @@ const void * CudaMemory::getPointer() const
 void CudaMemory::fill(unsigned char c)
 {
 	CUDA_SAFE_CALL(cudaMemset(dm,c,size()));
-	memset(hm,c,size());
+	if (hm != NULL)
+	{memset(hm,c,size());}
 }
 
 /*! \brief Return the CUDA device pointer

src/memory/CudaMemory.cuh

@@ -92,6 +92,9 @@ public:
 	//! Move memory from device to host
 	virtual void deviceToHost();
 
+	//! Move memory from device to host, just one chunk
+	virtual void deviceToHost(size_t start, size_t stop);
+
 	//! get the device pointer, but do not copy the memory from host to device
 	virtual void * getDevicePointerNoCopy();
 

src/memory/ExtPreAlloc.hpp

@@ -180,6 +180,9 @@ public:
 	//! Do nothing
 	virtual void deviceToHost(){};
 
+	//! Do nothing
+	virtual void deviceToHost(size_t start, size_t stop) {};
+
 	/*! \brief Return the pointer of the last allocation
 	 *
 	 * \return the pointer

src/memory/HeapMemory.cpp

@@ -18,6 +18,7 @@ static const int extra_pad = 512;
 #include "Memleak_check.hpp"
 #endif
 
+
 /*! \brief fill host and device memory with the selected byte
  *
  * \param byte to fill

src/memory/HeapMemory.hpp

@@ -96,6 +96,9 @@ public:
 	//! Do nothing
 	virtual void deviceToHost(){};
 
+	//! Do nothing
+	virtual void deviceToHost(size_t start, size_t stop) {};
+
 	//! Increment the reference counter
 	virtual void incRef()
 	{ref_cnt++;}

src/memory/PtrMemory.hpp

@@ -88,6 +88,9 @@ public:
 	//! Do nothing
 	virtual void deviceToHost(){};
 
+	//! Do nothing
+	virtual void deviceToHost(size_t start, size_t stop) {};
+
 	/*! \brief fill memory with the selected byte
 	 *
 	 *

src/memory/memory.hpp

@@ -131,6 +131,14 @@ class memory
 	 */
 	virtual void deviceToHost() = 0;
 
+	/*! \brief Copy the memory from device to host
+	 *
+	 * \param start from start
+	 * \param stop to stop
+	 *
+	 */
+	virtual void deviceToHost(size_t start, size_t stop) = 0;
+
 	/*! \brief Get the device pointer (Do not copy from host to device)
 	 *
 	 *