实例介绍
【实例简介】ANSYS并行计算官方指南
ANSYS_Mechanical_APDL_Parallel_Processing_Guide
【实例截图】
【核心代码】
Table of Contents
1. Overview of Parallel Processing .............................................................................................................. 1
1.1. Parallel Processing Terminology ........................................................................................................ 1
1.1.1. Hardware Terminology ............................................................................................................. 2
1.1.2. Software Terminology .............................................................................................................. 2
1.2. HPC Licensing ................................................................................................................................... 3
2. Using Shared-Memory ANSYS ................................................................................................................ 5
2.1. Activating Parallel Processing in a Shared-Memory Architecture ........................................................ 5
2.1.1. System-Specific Considerations ............................................................................................... 6
2.2.Troubleshooting ............................................................................................................................... 6
3. GPU Accelerator Capability ..................................................................................................................... 9
3.1. Activating the GPU Accelerator Capability ....................................................................................... 10
3.2. Supported Analysis Types and Features ........................................................................................... 10
3.2.1. NVIDIA GPU Hardware ............................................................................................................ 11
3.2.1.1. Supported Analysis Types .............................................................................................. 11
3.2.1.2. Supported Features ....................................................................................................... 12
3.3.Troubleshooting ............................................................................................................................. 12
4. Using Distributed ANSYS ...................................................................................................................... 15
4.1. Configuring Distributed ANSYS ....................................................................................................... 17
4.1.1. Prerequisites for Running Distributed ANSYS .......................................................................... 18
4.1.1.1. MPI Software ................................................................................................................. 18
4.1.1.2. Installing the Software ................................................................................................... 19
4.1.2. Setting Up the Cluster Environment for Distributed ANSYS ...................................................... 20
4.1.2.1. Optional Setup Tasks ..................................................................................................... 21
4.1.2.2. Using the mpitest Program ........................................................................................ 21
4.1.2.3. Interconnect Configuration ............................................................................................ 22
4.2. Activating Distributed ANSYS ......................................................................................................... 22
4.2.1. Starting Distributed ANSYS via the Launcher .......................................................................... 23
4.2.2. Starting Distributed ANSYS via Command Line ....................................................................... 24
4.2.3. Starting Distributed ANSYS via the HPC Job Manager .............................................................. 25
4.2.4. Starting Distributed ANSYS in the Mechanical Application (via ANSYS Workbench) .................. 25
4.2.5. Using MPI Files ....................................................................................................................... 26
4.2.5.1. Intel MPI Configuration File Examples ............................................................................ 26
4.2.5.2. Open MPI Hostfile Example ............................................................................................ 27
4.2.6. Directory Structure Across Machines ....................................................................................... 27
4.3. Supported Analysis Types and Features ........................................................................................... 27
4.3.1. Supported Analysis Types ....................................................................................................... 27
4.3.2. Supported Features ................................................................................................................ 28
4.4. Understanding the Working Principles and Behavior of Distributed ANSYS ....................................... 30
4.4.1. Differences in General Behavior ............................................................................................. 30
4.4.2. Differences in Solution Processing .......................................................................................... 33
4.4.3. Differences in Postprocessing ................................................................................................. 35
4.4.4. Restarts in Distributed ANSYS ................................................................................................. 35
4.4.4.1. Procedure 1 - Use the Same Number of Cores ................................................................. 36
4.4.4.2. Procedure 2 - Use a Different Number of Cores ............................................................... 37
4.4.4.3. Additional Considerations for the Restart ....................................................................... 38
4.5. Example Problems .......................................................................................................................... 38
4.5.1. Example: Running Distributed ANSYS on Linux ....................................................................... 39
4.6.Troubleshooting ............................................................................................................................. 41
4.6.1. Setup and Launch Issues ........................................................................................................ 41
iii
Release 2020 R2 - © ANSYS, Inc. All rights reserved. - Contains proprietary and confidential information
of ANSYS, Inc. and its subsidiaries and affiliates.
4.6.2. Stability Issues ....................................................................................................................... 43
4.6.3. Solution and Performance Issues ............................................................................................ 43
Release 2020 R2 - © ANSYS, Inc. All rights reserved. - Contains proprietary and confidential information
of ANSYS, Inc. and its subsidiaries and affiliates. iv
Parallel Processing Guide
List of Tables
4.1. Parallel Capability in Shared-Memory and Distributed ANSYS ................................................................ 16
4.2. Platforms and MPI Software .................................................................................................................. 18
4.3. Required Files for Multiframe Restart - Procedure 1 ................................................................................ 37
4.4. Required Files for Multiframe Restart - Procedure 2 ................................................................................ 38
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