mirror of
https://github.com/Steffo99/unimore-hpc-assignments.git
synced 2024-11-26 10:04:23 +00:00
63 lines
2.8 KiB
Markdown
63 lines
2.8 KiB
Markdown
\[ **Stefano Pigozzi** + **Caterina Gazzotti** + **Fabio Zanichelli** | Topic OpenMP | High Performance Computing Laboratory | Unimore \]
|
|
|
|
# C code optimization using NVIDIA CUDA
|
|
|
|
> ### Assignment #2
|
|
>
|
|
> Every team is called to optimize (parallellize) the execution time of the assigned applications on multi-processor system.
|
|
>
|
|
> #### Expected outcomes
|
|
>
|
|
> * Repository of the code (github/gitlab is ok, or .zip )
|
|
> * Oral presentation (5 min + 5 min Q&A) of your work
|
|
>
|
|
> #### Assigned application
|
|
>
|
|
> Group 3: `OpenMP/linear-algebra/kernels/atax`
|
|
|
|
## Developed features
|
|
|
|
* [Workaround for unavailable `M_PI`](https://github.com/Steffo99/unimore-hpc-1/blob/bffa0502393d97e7cda4ac34c57dd9c3ac9ac9dc/OpenMP/linear-algebra/kernels/atax/atax.c#L13-L18)
|
|
* [Enabled `POLYBENCH_TIME` by default](https://github.com/Steffo99/unimore-hpc-1/blob/bffa0502393d97e7cda4ac34c57dd9c3ac9ac9dc/OpenMP/linear-algebra/kernels/atax/Makefile#L4-L5)
|
|
* [Enabled extra warnings by default](https://github.com/Steffo99/unimore-hpc-1/blob/bffa0502393d97e7cda4ac34c57dd9c3ac9ac9dc/OpenMP/linear-algebra/kernels/atax/Makefile#L6-L8)
|
|
* [Applied the maximum level of compiler optimizations](https://github.com/Steffo99/unimore-hpc-1/blob/bffa0502393d97e7cda4ac34c57dd9c3ac9ac9dc/OpenMP/linear-algebra/kernels/atax/Makefile#L9-L10)
|
|
* [Replaced `tmp` array with a iteration-local variable](https://github.com/Steffo99/unimore-hpc-1/commit/7fc2506cc7c6743288a56047cbb44e960abec4fc)
|
|
* [Allowed the addition of `CFLAGS` from `make` calls](https://github.com/Steffo99/unimore-hpc-1/blob/bffa0502393d97e7cda4ac34c57dd9c3ac9ac9dc/OpenMP/linear-algebra/kernels/atax/Makefile#L13-L14)
|
|
* [Disabled `make` output](https://github.com/Steffo99/unimore-hpc-1/commit/f655df0eb7e539b06965de7c79dbc1c7bc6a5950)
|
|
* [Created `make bench` target to run](https://github.com/Steffo99/unimore-hpc-1/blob/bffa0502393d97e7cda4ac34c57dd9c3ac9ac9dc/OpenMP/linear-algebra/kernels/atax/Makefile#L20-L23) [a script performing multiple parametrized tests on the code to determine the best optimizations](https://github.com/Steffo99/unimore-hpc-1/blob/master/OpenMP/linear-algebra/kernels/atax/.bench.sh)
|
|
* [Moved `polybench_start_instruments` to include the `init_array` function](https://github.com/Steffo99/unimore-hpc-1/commit/0ba75336e60b1cf149684a5f259fa933a36e2c5c)
|
|
|
|
## Results
|
|
|
|
TBD
|
|
|
|
### Validation
|
|
|
|
* Compiler used: **nvcc**
|
|
* Jetson Nano used: `8`
|
|
|
|
To reproduce the obtained results:
|
|
|
|
1. Clone the repository on a Jetson Nano:
|
|
|
|
```console
|
|
$ git clone https://github.com/Steffo99/unimore-hpc-assignments
|
|
```
|
|
|
|
2. Access our group's assigned folder:
|
|
|
|
```console
|
|
$ cd unimore-hpc-1/OpenMP/linear-algebra/kernels/atax
|
|
```
|
|
|
|
3. Checkout the exact commit the tests were executed on:
|
|
|
|
```console
|
|
$ git checkout TBD
|
|
```
|
|
|
|
4. Run the benchmarking script:
|
|
|
|
```console
|
|
$ make bench
|
|
```
|