Richard, On Tuesday, August 3, 2021 at 9:58:07 AM UTC-4 richard....@gmail.com wrote:
> a) which (free) profiling tools can you recommend? I watched the video > lecture of Wolfgang about that topic, but was looking for more opinions! I > want to see which parts of the code take time apart from the (already > detailed) TimerOutput. > I use two tools: Caliper (https://software.llnl.gov/Caliper/) and HPCToolkit (http://hpctoolkit.org/). These tools have different goals. Caliper is basically a much more powerful version of TimerOutput. You add Caliper to your code and you have access to different profiling measures and connectors to other profiling tools. The advantage of Caliper is that you can use it in your code and then monitor the performance over time. It is very easy to use and the Caliper annotation in your code can be used by VTune and NVidia NSight. HPCToolkit on the other hand is a more traditional profiling tool. You use it to find the bottlenecks in your code. I really like that it is non-invasive. Unlike Caliper, you don't need to change anything in your code. I've used it to profile code on small cluster but it also works on some of the largest supercomputers at the DOE. Best, Bruno -- The deal.II project is located at http://www.dealii.org/ For mailing list/forum options, see https://groups.google.com/d/forum/dealii?hl=en --- You received this message because you are subscribed to the Google Groups "deal.II User Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to dealii+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/dealii/6f279c71-008d-4233-ac91-2f41f11afdc9n%40googlegroups.com.
