# Krist

## Description
Krist kernel is used on crystallography to find the exact shape of a molecule using Rntgen
diffraction on single crystals or powders.

## Versions

We have several implementations of this benchmark:

* **01.krist_cuda:** Parallel version using CUDA tasks

* **02.krist_hybrid:** Parallel version using a combination of CUDA and SMP tasks in alternating iterations

## Execution instructions

Before executing the program, it is necessary to configure Nanos6 to use the GPU-enabled hierarchical scheduler, thus it is necessary to set the environment variable *NANOS6_SCHEDULER* to *hierarchical*

To run the program use:
```
NANOS6_SCHEDULER=hierarchical ./krist
```