Exercise 5.1: What is the significance of the value printed?

Exercise 5.4: What are the identity values for:

&&

||

&

|

^

Exercise 5.5

a.  What is the output of the following block of code when run on Bleeblon?

int i;
float sum = 0.0;
for (int i=0; i < 4; i++)
	sum += a[i];
printf("sum = %4.lf\n", sum);

b.  What is the output of this code on Bleeblon if thread 0 handles interations
0 and 1, and thread 1 handles iterations 2 and 3?

int i;
float sum = 0.0;
#pragma omp parallel for num_threads(2) reduction(+:sum)
for (i=0; i < 4; i++)
   sum += a[i];
printf("sum = %4.lf\n", sum);

Exercise 5.8:  How can you eliminate the dependence on a[i-1] in the
calculation of a[i]?  (You may either give code or explain in English as long
as you are detailed and precise.)



Question 1: List two differences between CPU computing and GPU computing:

a.  

b.

Question 2: In OpenCL, we write two programs: one that runs on the GPU and one
that runs on the CPU.  What name do we use for each of these programs?

GPU:

CPU:

Question 3: What function can an OpenCL kernel program call to obtain the id of
the currently running thread?

Question 4: What function does an OpenCL driver program call to build a kernel
program?

Question 5: What function does an OpenCL driver program call to create a memory
buffer on the GPU device?