new

[book_gpu.git] / BookGPU / Chapters / chapter2 / ch2.tex

diff --git a/BookGPU/Chapters/chapter2/ch2.tex b/BookGPU/Chapters/chapter2/ch2.tex
index bd48e2a0eb078011a2fa0c80fb47dd61cfd7a470..75be84bc7e690206142d347d57a3eacdca84f642 100755 (executable)
--- a/BookGPU/Chapters/chapter2/ch2.tex
+++ b/BookGPU/Chapters/chapter2/ch2.tex
@@ -26,7 +26,7 @@ As GPUs have  their own memory, the first step consists  of allocating memory on
 the   GPU.   A   call   to  \texttt{cudaMalloc}\index{CUDA functions!cudaMalloc}
 allocates memory  on the GPU.  The  second parameter represents the  size of the
 allocated variables, this size is expressed in bits.
 the   GPU.   A   call   to  \texttt{cudaMalloc}\index{CUDA functions!cudaMalloc}
 allocates memory  on the GPU.  The  second parameter represents the  size of the
 allocated variables, this size is expressed in bits.

-
+\pagebreak

 \lstinputlisting[label=ch2:lst:ex1,caption=simple example]{Chapters/chapter2/ex1.cu}
 
 
 \lstinputlisting[label=ch2:lst:ex1,caption=simple example]{Chapters/chapter2/ex1.cu}
 
 


@@ -60,8 +60,8 @@ the           values            of           the           block           index
 (called  \texttt{blockIdx} \index{CUDA keywords!blockIdx}  in CUDA)  and  of the
 thread   index   (called   \texttt{threadIdx}\index{CUDA keywords!threadIdx}   in
 CUDA). Blocks of threads and thread  indexes can be decomposed into 1 dimension,
 (called  \texttt{blockIdx} \index{CUDA keywords!blockIdx}  in CUDA)  and  of the
 thread   index   (called   \texttt{threadIdx}\index{CUDA keywords!threadIdx}   in
 CUDA). Blocks of threads and thread  indexes can be decomposed into 1 dimension,

-2 dimensions, or  3 dimensions. {\bf A REGARDER} According to the  dimension of manipulated data,
-the appropriate dimension  can be useful. In our example,  only one dimension is
+2 dimensions, or  3 dimensions.  According to the  dimension of manipulated data,
+the dimension of blocks of threads  must be chosen carefully. In our example,  only one dimension is

 used.   Then using the notation  \texttt{.x}, we  can access  the  first dimension
 (\texttt{.y}  and \texttt{.z},  respectively allow access  to the  second and
 third dimension).   The variable \texttt{blockDim}\index{CUDA keywords!blockDim}
 used.   Then using the notation  \texttt{.x}, we  can access  the  first dimension
 (\texttt{.y}  and \texttt{.z},  respectively allow access  to the  second and
 third dimension).   The variable \texttt{blockDim}\index{CUDA keywords!blockDim}