Accelerating FDTD Simulations with GPU: Ansys Lumerical + Cloud Burst Demo
Hello, this is Majid from Ozen Engineering. Today, I would like to discuss how Burst works. Here is my numerical FDTD setup.
Introduction to Ansys Cloud Burst
If you install the new version of Lumerical, like 2025 or 1.3, you will find that Ansys Cloud Burst compute is integrated into Ansys Lumerical. This allows you to submit your job to the cloud, which is equipped with high-performance GPU and CPU hardware.
Hardware Access
Let's look at the performance and hardware you can access with Ansys Burst:
- CPU and GPU options are available.
- For CPU, you have two options: local host and Burst.
- Selecting Burst allows you to use Ansys cloud resources.
Example: Meta Lens Simulation
Here is an example of a meta lens simulation:
- XYZ coordinates and structure details are provided.
- A downloadable file is available in my published blog.
Running Simulations
When running the simulation on the CPU side:
- You can rename your job name.
- Check your company account to see available credits.
- Select "download result after completion" to access results post-run.
- Advanced options show available cores and RAM in Burst:
- 31 cores with 114GB RAM
- 63 cores with 239GB RAM
- 23 cores with RAM
- 31 cores with 489GB RAM
I ran the simulation with 63 cores, which took one hour to complete.
GPU Options
For GPU simulations:
- Select Burst and run the simulation.
- Available GPU configurations include:
- GPU with 192 memory
- 4 LS, 4 DS configurations
- 94, 95 cores
Running the simulation with the GPU took 8 minutes.
Results
Here are the results for different GPU configurations:
- GPU with RTX A6000
- GPU with A100
- Burst plot with 4 GPUs with L40s
Thank you for understanding the description. Try using this at your own demand. The result takes 0.04 - Barcelona open - with exclusively 9 minutes.
Contact Information
If you have any further questions, please contact us at Ozen Engineering, Inc. for more information.
Hello, this is Majid from Ozen Engineering. So today I would like to discuss Burst, how it works. So here is my numerical FDTD. If you install the new version of Lumerical, like 2025 or 1.3, we actually have the Ansys Cloud Burst compute into the Ansys Lumerical.
You can submit your job to the cloud, which is equipped with high-performance GPU and CPU hardware. I will show you which hardware you can access to the Ansys Burst. Let's look at the performance.
Here is the FDTD; if you look at the FDTD, you can see CPU and GPU, and the CPU - if I click on it, I have two options: local host and Burst. So, if I select Burst, it means that if I run the simulation, I can use Ansys cloud resources. So here is the example of the meta lens.
You can see my XYZ and the detail of the structure. I published a blog, so I put this downloadable file in the blog. So, if I run the simulation on the CPU side, you see here - this is where you can rename your job name. I used my company account, so you can see how much credit I have.
So, if I select "download result after completion", it means that if I select this one, after my run is finished, I have access to the results. If I select "advanced", you can see how many cores and how much RAM I have access to in the Burst. Let's try one by one. Here is the 31 core with 114GB RAM.
Here is the 63 core with 239GB RAM. Here is the 23 core with RAM. Here is the 31 core with 489GB RAM. I ran this simulation with this one - 63 cores - and it takes one hour to finish this part. The other option that you can choose is the GPU; if I select the Burst and then run the simulation.
So, you can see for the GPU, this is the GPU that we have access to, like this one with this RAM and the GPU memory - 192. It's 4 LS, 4 DS, and then if I select the other one, it's 94, 95 cores, and so I run the simulation with the GPU, and it takes 8 minutes.
Okay, and here is the result for the GPU with RTX A6000, and this is for a GPU with A100, and this is a Burst plot with 4 GPU with L40s. Thank you for understanding the description, and try using this at your own demand.
You can see the result takes 0.04 - Barcelona open - with exclusively 9 minutes. If you have any further questions, please contact us at https://ozeninc.com/contact for more information.
