System requirements to improve calculation speed

05-Future developments & requests
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mchoiniere
Posts: 1
Joined: 05 Apr 2018, 15:10

System requirements to improve calculation speed

Post by mchoiniere » 05 Apr 2018, 15:50

Hi,

I am looking to buy a workstation to perform multiple NLTHAs on a large 3D model in SeismoStruct 2016 using SeismoBatch utility. Hence, what are the most important components to focus on in order to improve calculation speed of these softwares?

In the User Manual, it is written that "SeismoStruct cannot make use of more than 2GB of memory for a given analysis [...]." and that "There is a RAM limitation in SeismoStruct (4GB in 64-bit Windows systems [...])." Does it mean that having more than 4GB of RAM is not useful, even when multiple analysis are run simultaneously, and that only 2 analysis could run simultaneously at full speed?

If not, does the number of simultaneous analysis that can be carry out in SeismoBatch is limited by the number of core of the processor or it depends on the available RAM?

Thanks in advance for your help.

Mathieu Choinière

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seismosoft
Posts: 606
Joined: 06 Jul 2007, 04:55

Re: System requirements to improve calculation speed

Post by seismosoft » 06 Apr 2018, 16:07

Hello Mathieu,
The note that "there is a RAM limitation in SeismoStruct (4GB in 64-bit Windows systems ..." is not well written. It is supposed to mean that there is a size limitation of the output file (4GB in 64-bit and 3GB in 32-bit Windows), after which the program is not able to read the output results. Τhanks for spotting that, we will fix it the upcoming SeismoStruct v2018.
In your case, we would recommend to have at least 8GB (preferably 16GB of RAM).
Further, there is no limit in the number of analyses that you can run simultaneously. The user can select in SeismoBatch the number of analyses to run at the same time. If this number is larger than the the number of the processor cores, in some of the cores the resources will be split in more than one analyses. It will not affect the system, but we do not recommend this.
Seismosoft Suppoty

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