diff --git a/branches/ParadisEO-GPU/src/eval/moGPUEvalByCpy.h b/branches/ParadisEO-GPU/src/eval/moGPUEvalByCpy.h
index 7783693a1..f7bec4950 100644
--- a/branches/ParadisEO-GPU/src/eval/moGPUEvalByCpy.h
+++ b/branches/ParadisEO-GPU/src/eval/moGPUEvalByCpy.h
@@ -82,6 +82,7 @@ public:
 
 	/**
 	 * Compute fitness for all solution neighbors in device
+	 * @param _sol the solution that generate the neighborhood to evaluate parallely
 	 * @param _cpySolution Launch kernel with local copy option of solution in each thread
 	 * @param _withCalibration an automatic configuration of kernel to launch( NB_THREAD BY BLOCK & NB_BLOCK BY KERNEL ),default (1)
 	 */
@@ -115,6 +116,11 @@ public:
 			cout << "It's evaluation by copy set cpySolution to true" << endl;
 	}
 
+	/**
+	 * Compute the best combination of number of block by grid and number of thread  within block
+	 * @param _sol the solution that generate the neighborhood to evaluate parallely
+	 */
+
 	virtual void calibration(EOT & _sol) {
 
 		unsigned size = _sol.size();