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Analysis, design, and results recover 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 (fast SSDs directly connected to PCI bus (PCIe) are recommended over regular hard drives (or slower SSDs) connected to SATA interface) and additional RAM. 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. External hard drives are not recommended, and network drives should not be used.

 

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.

 

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Related Incidents:

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    no33097
    commentRAM and analysis time for influence-based moving load analysis
    • Email
      date3/9/2011
      subjectRAM and analysis time for influence-based moving load analysis
      fromok
      commentGeneral discussion
      tora
      id6881875
  • Incident
    no40873
    commentGUI does not presently (as of Jan 2012) take advantage of multiple processors.
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Related emails:

  • Email
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    commentUpdating the wiki page for parallelized moving loads
    took
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See Also