Rename GPU into cuda, and merge SPGPU code.

cuda/spgpu/coo.cpp

@@ -0,0 +1,98 @@
+#include "coo_conv.h"
+#include "core.h"
+
+#include <map>
+
+// returns the number of non-zero blocks
+int computeBcooSize(int blockRows, int blockCols, const int* rows, const int* cols, int nonZeros)
+{
+	// use a map to count al non zero blocks
+	std::map<unsigned long long int, int> blocksPositions;
+	
+	int blockCount = 0;
+	
+	int i;
+	for (i=0; i<nonZeros; ++i)
+	{
+		int rowId = rows[i];
+		int colId = cols[i];
+		
+		unsigned long long int blockRowId = rowId/blockRows;
+		unsigned long long int blockColId = colId/blockCols;
+		
+		unsigned long long int blockId = blockRowId | (blockColId << 32);
+		
+		std::map<unsigned long long ,int>::iterator it = blocksPositions.find(blockId);
+		
+		// not found	
+		if(it == blocksPositions.end())
+		{
+			blocksPositions[blockId] = blockCount;
+			++blockCount;
+		}
+	}
+	
+	return blockCount;
+}
+
+
+void cooToBcoo(int* bRows, int* bCols, void* blockValues, /*int isBlockColumnMajor,*/ int blockRows, int blockCols, 
+	const int* rows, const int* cols, const void* values, int nonZeros, spgpuType_t valuesType)
+{
+	// use a map to count al non zero blocks
+	std::map<unsigned long long int, int> blocksPositions;
+	
+	int blockCount = 0;
+	
+	size_t elementSize = spgpuSizeOf(valuesType);
+	size_t blockElementSize = elementSize*blockRows*blockCols;
+	int i;
+	for (i=0; i<nonZeros; ++i)
+	{
+		int rowId = rows[i];
+		int colId = cols[i];
+		
+		unsigned long long int blockRowId = rowId/blockRows;
+		unsigned long long int blockColId = colId/blockCols;
+		
+		unsigned long long int blockId = blockRowId | (blockColId << 32);
+		
+		std::map<unsigned long long int,int>::iterator it = blocksPositions.find(blockId);
+		
+		int blockPos;
+		
+		// not found	
+		if(it == blocksPositions.end())
+		{
+			blocksPositions[blockId] = blockCount;
+			blockPos = blockCount;
+			
+			bRows[blockCount] = blockRowId;
+			bCols[blockCount] = blockColId;
+			
+			memset((char*)blockValues + blockCount*blockElementSize, 0, blockElementSize);
+			
+			++blockCount;
+		}
+		else
+			blockPos = it->second;
+		
+		int blockRowOffset = rowId % blockRows;
+		int blockColOffset = colId % blockCols;
+		
+		int blockOffset;
+		
+		//if (isBlockColumnMajor)
+			blockOffset = blockRowOffset + blockColOffset*blockRows;
+		/*else
+			blockOffset = blockRowOffset*blockCols + blockColOffset;
+		*/
+		
+		char* dest = (char*)blockValues + blockPos*blockElementSize + blockOffset*elementSize;
+		const char* src = (const char*)values + elementSize*i;
+			
+		memcpy(dest, src, elementSize);
+	}
+}
+
+