This article briefly describes the steps for running Samadii SCIV on a virtual machine (VM) that's deployed on Azure. It also presents the performance results of running Samadii SCIV on Azure.
Samadii SCIV (Statistical Contact in Vacuum) analyzes fluid behavior, deposition processes, and chemical reactions on rarefied gas regions by using the direct simulation Monte Carlo (DSMC) method. To calculate the physical phenomena represented by the Boltzmann equation, the DSMC method uses representative particles, which replace the real molecules. SCIV also provides functions for traditional flow simulation, display deposition processes, and semiconductor device analysis in rarefied gas regions.
SCIV is used by manufacturers of display devices and semiconductors, in aerospace, manufacturing, and in other industries.
Why deploy Samadii SCIV on Azure?
- Modern and diverse compute options to meet your workload's needs
- The flexibility of virtualization without the need to buy and maintain physical hardware
- Rapid provisioning
- Strong performance scale-up, with configurations that provide optimized scaling or optimized cost efficiency
Architecture
Download a Visio file of this architecture.
Components
- Azure Virtual Machines is used to create a Windows VM. For information about deploying the VM and installing the drivers, see Windows VMs on Azure.
- Azure Virtual Network is
used to create a private network infrastructure in the cloud.
- Network security groups are used to restrict access to the VM.
- A public IP address connects the internet to the VM.
- A physical solid-state drive (SSD) is used for storage.
Compute sizing and drivers
The performance tests of Samadii SCIV on Azure used NVv3, NCas_T4_v3, NCv3, and ND_A100_v4 VMs running Windows 10. The following table provides details about the VMs.
| VM size | GPU name | vCPU | Memory, in GiB | Maximum data disks | GPU | GPU memory, in GiB | Maximum uncached disk throughput, IOPS / MBps) | Temporary storage (SSD), in GiB | Maximum NICs |
|---|---|---|---|---|---|---|---|---|---|
| Standard_NV12s_v3 | Tesla M60 | 12 | 112 | 12 | 1 | 8 | 20,000 / 200 | 320 | 4 |
| Standard_NC4as_T4_v3 | Tesla T4 | 4 | 28 | 8 | 1 | 16 | - | 180 | 2 |
| Standard_NC6s_v3 | V100 | 6 | 112 | 12 | 1 | 16 | 20,000 / 200 | 736 | 4 |
| Standard_ND96asr_v4 | A100 | 96 | 900 | 32 | 8 | 40 | 80,000 / 800 | 6,000 | 8 |
Required drivers
To take advantage of the GPU capabilities of NVv3, NCas_T4_v3, NCv3, and ND_A100_v4 VMs, you need to install NVIDIA GPU drivers.
To use AMD processors on NCas_T4_v3, NCv3, and ND_A100_v4 VMs, you need to install AMD drivers.
Samadii SCIV installation
Before you install SCIV, you need to deploy and connect a VM, install an eligible Windows 10 image, and install the required NVIDIA and AMD drivers.
For information about eligible Windows images, see How to deploy Windows 10 on Azure and Use Windows client in Azure for dev/test scenarios.
Important
NVIDIA Fabric Manager installation is required for VMs that use NVLink. ND_A100_v4 VMs use this technology.
For information about deploying the VM and installing the drivers, see Run a Windows VM on Azure.
The product installation process involves installing a license server, installing Samadii SCIV, and configuring the license server. For more information about installing SCIV, contact Metariver Technology.
Samadii SCIV performance results
Windows 10 Professional, version 20H2, with an x86-64 architecture, was used for all tests. The following table shows the processors that were used.
| ND_A100_v4 | NCv3 | NCas_T4_v3 | NVv3 | |
|---|---|---|---|---|
| Processor | AMD EPYC 7V12, 64-core processor, 2.44 GHz (2 processors) | Intel Xeon CPU E5-2690 v4 | AMD EPYC 7V12, 64-core processor, 2.44 GHz | Intel Xeon CPU E5-2690 v4 |
The PNS model was used for testing.
The following table shows the elapsed runtimes and relative speed increases on the four VMs.
| VM | Elapsed time, in seconds | Relative speed increase |
|---|---|---|
| NVv3 | 93,483.74 | 1.00 |
| NCas_T4_v3 | 38,311.8 | 2.44 |
| NCv3 | 27,096.83 | 3.45 |
| ND_A100_v4 | 16,322.98 | 5.73 |
This graph shows the relative speed increases:
Azure cost
The following table presents wall-clock times in hours. To compute the total cost, multiply these times by the Azure VM hourly costs for NVv3, NCasT4_v3, NCsv3, and NDA100v4 VMs. For the current hourly costs, see Windows Virtual Machines Pricing.
Only simulation runtime is considered in these cost calculations. Application installation time and license costs aren't included.
You can use the Azure pricing calculator to estimate the costs for your configuration.
| VM size | Number of GPUs | Wall-clock time, in hours |
|---|---|---|
| Standard_NV12s_v3 | 1 | 25.97 |
| Standard_NC4as_T4_v3 | 1 | 10.64 |
| Standard_NC6s_v3 | 1 | 7.53 |
| Standard_ND96asr_v4 | 8 | 4.53 |
Summary
- Samadii SCIV was successfully tested on NDv4, NCv3, NCasT4_v3, and NVv3 VMs.
- SCIV performance scales well on NCasT4_v3, NCv3, and NDv4 VMs.
- The NCasT4_v3 VM performs well and is cost efficient.
- Of the four VMs, NDv4 provides the best scale-up.
Contributors
This article is maintained by Microsoft. It was originally written by the following contributors.
Principal authors:
- Hari Bagudu | Senior Manager
- Gauhar Junnarkar | Principal Program Manager
- Vinod Pamulapati | HPC Performance Engineer
Other contributors:
- Mick Alberts | Technical Writer
- Guy Bursell | Director Business Strategy
- Sachin Rastogi | Manager
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Next steps
- GPU-optimized virtual machine sizes
- Virtual machines on Azure
- Virtual networks and virtual machines on Azure
- Learning path: Run high-performance computing (HPC) applications on Azure