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Analysis, design, and results-recovery times are dependent upon the following hardware characteristics:

  • Available memory
  • Input/output (I/O)
  • Processor speed
  • Number of cores

Depending on the type of analysis, some hardware characteristics may have greater impact on analysis and results-recovery speed than others.

Hardware requirements for analysis types

This table approximates the hardware demand for various analysis types. I/O intensive analyses tend to benefit from both increased disk speed and additional RAM. Fast SSDs directly connected to the PCI bus (PCIe) are recommended over regular hard drives connected to a SATA interface or slower SSDs. External hard drives are not recommended, and network drives should not be used. The operating system uses RAM for file caching. The most cost-effective approach to improving software performance is to increase the amount of RAM on 64-bit operating systems, and to run analysis out-of-process.

 

Analysis Type

RAM Memory Demands

I/0 (Disk Access) Demands

Processor Demands

Linear static

Moderate

Moderate

Moderate/Multi-core

Nonlinear static

Moderate

Moderate

Moderate/Multi-core

Modal (Eigen/Ritz/Buckling)

Moderate

High

Moderate/Multi-core

Linear modal time-history

Low

Low

High

Nonlinear modal time-history

Low

Low

High/Multi-core(1)

Linear direct-integration time-history

Moderate

High

Moderate/Multi-core

Nonlinear direct-integration time-history

Moderate

High

Moderate/Multi-core

Influence-based moving-load

Moderate

Moderate

High/Multi-core

Step-by-step moving-load

High

Moderate

Moderate/Multi-core

Steady-state

High

Moderate

High

Power-spectral-density

High

Moderate

High

Running design

Low

Moderate

High

Processing section cuts

Low

High

Low

 

Comments:

(1) Nonlinear modal time history is parallelized for state determination and results recovery.

 

See Also