There are a number of text conventions used throughout this book.

CodeInText: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: "Note that there is an asynchronous alternative to cudaMemcpy."

A block of code is set as follows:

#include<stdio.h>
#include<stdlib.h>

__global__ void print_from_gpu(void) {
    printf("Hello World! from thread [%d,%d] 
        From device
", threadIdx.x,blockIdx.x);
}

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

int main(void) {
    printf("Hello World from host!
");
    print_from_gpu<<<1,1>>>();
    cudaDeviceSynchronize();
    return 0;
}

Any command-line input or output is written as follows:

$ nvcc -o hello_world hello_world.cu

Bold: Indicates a new term, an important word, or words that you see onscreen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "For Windows users, in the VS project properties dialog, you can specify your GPU's compute capability at CUDA C/C++ | Device | Code Generation."