X-Git-Url: https://bilbo.iut-bm.univ-fcomte.fr/and/gitweb/book_gpu.git/blobdiff_plain/d74981733767eca78dbbe5be810b9b2e239e8aee..ca38d6218b9ba6a0fd2e0b2126c6b38146504b8e:/BookGPU/Chapters/chapter10/optiSE.cu

diff --git a/BookGPU/Chapters/chapter10/optiSE.cu b/BookGPU/Chapters/chapter10/optiSE.cu
index 9033d98..e676190 100644
--- a/BookGPU/Chapters/chapter10/optiSE.cu
+++ b/BookGPU/Chapters/chapter10/optiSE.cu
@@ -1,24 +1,24 @@
 extern __shared__ volatile double sData[];
 __global__ void
-selectInVar(int m, int n, double *c, double *AN, uint pitchAN, uint *resIdx, double *resVal)
-{
+selectInVar(int m, int n, double *c, double *AN, uint pitchAN, 
+            uint *resIdx, double *resVal) {
 	uint i, maxIdx = -1, bid = blockIdx.x;
 	double val, locSum, xScore, maxScore = 0.0;
-	while(bid < n){ // Processing multiple column
+	while (bid < n) { // Processing multiple columns
 		i = threadIdx.x;
 		locSum = 0.0;
-		if(isPotentialEnteringVar(bid)){ // Do the local processing
-			while(i < m) { // Each thread process multiple elements
+		if (isPotentialEnteringVar(bid)) { // Do the local processing
+			while (i < m) { // Each thread processes multiple elements
 				val = AN[i+bid*pitchAN];
 				locSum += val*val;
 				i += blockDim.x;
 			}
-			// Reduce the value using the shared memory
+			// Reduce the value using shared memory
 			reduceSum(locSum);
-			if (tid == 0){ // Is this the best variable encoutered ?
-				// on tid=0 locSum eqals the s.e. coeffcient
+			if (tid == 0){ // Is this the best variable encountered ?
+				// on tid=0 locSum equals the steepest edge coeffcient
 				xScore = cVal*rsqrt(locSum); 
-				if(fabs(maxScore) < fabs(xScore)){
+				if (fabs(maxScore) < fabs(xScore)) {
 					maxIdx = bid;
 					maxScore = xScore;
 				}
@@ -28,7 +28,7 @@ selectInVar(int m, int n, double *c, double *AN, uint pitchAN, uint *resIdx, dou
 		bid += gridDim.x;
 	}
 	// Write the result into global memory
-	if (tid == 0){
+	if (tid == 0) {
 		resIdx[blockIdx.x] = maxIdx;	
 		resVal[blockIdx.x] = maxScore;
 	}