Description
The purpose of this assignment is to gain hands-on experience in new open standards for
programming heterogeneous computers accelerated by graphics processing units (GPUs) and other
accelerators. Specifically, you will practice directive-based OpenMP target offload and unified
data-parallel programming language, DPC++.
Prerequisite
We will practice both OpenMP target and DPC++ on Intel developer’s cloud (DevCloud). To
do it, create your DevCloud account by registering at https://devcloud.intel.com/oneapi.
Part I: OpenMP Target Offload Computation of p
In this part, you will write a GPU offload program (name it omp_teams_pi.cu) to compute the value
of � using omp target, teams and distribute constructs.
(Assignment)
1. Modify the simple OpenMP target program omp_target_pi.cu to its teams-distribute counterpart
omp_teams_pi.cu, following the lecture note on “OpenMP Target Offload for Heterogeneous
Architectures”. Submit your code.
2. Compile and run your program on a GPU-accelerated computing node on DevCloud. Submit your
output, which should look like the following:
u49162@login-2:~$ cc -o omp_teams_pi omp_teams_pi.c -fopenmp
u49162@login-2:~$ qsub -I -l nodes=1:gpu:ppn=2
qsub: waiting for job 714173.v-qsvr-1.aidevcloud to start
qsub: job 714173.v-qsvr-1.aidevcloud ready
u49162@s001-n181:~$ ./omp_teams_pi
PI = 3.141593
Part II: DPC++ Computation of p
In this part, you will experience the compilation and running processes for a DPC++ program (pi.cpp)
to compute the value of �. While programming is not required for this part since C++ is not prerequisite to
this class, please use this opportunity to learn the essence of C++ and DPC++ programming by going
through the code and understanding why it worksfollowing the lecture note on “Data Parallel C++ (DPC++)
for Heterogeneous Architectures”.
(Assignment)
1. Compiler and run pi.cpp node. on a GPU-accelerated computing node on DevCloud. Submit your
output, which should look like the following:
Submit your output, which should look like the following:
u49162@login-2:~$ dpcpp -o pi pi.cpp
u49162@login-2:~$ qsub -I -l nodes=1:gpu:ppn=2
qsub: waiting for job 714154.v-qsvr-1.aidevcloud to start
qsub: job 714154.v-qsvr-1.aidevcloud ready
u49162@s001-n160:~$ ./pi
Running on: Intel(R) Gen9 HD Graphics NEO
Pi = 3.14159
