×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Solver Performance

Solver Performance

Solver Performance

(OP)
I have what might be an odd question.

I, personally, don't work a lot with STAAD but have done so in the past. I have, however, collegues that do and when the modells get larger, say 20000 gridpoints, especially with plate elements the solver gets very slooow.

Since I today work with FEM-software we have compared and what in STAAD takes hours in FEM-software typically takes minutes.

Does anybody have similar experiences or are we doing something wrong?

I have heard that the new solvers in for example ver 2004 is faster. If so, how much faster? (We haven't recieved it yet).

The result today is that STAAD is useless for some applications so I'm curious about the future.

Regards

Thomas

Ps The "slow" part is the triangulization.

RE: Solver Performance

Does the model have master/slave?  This data can cause some slow down.  I can give better comments if you email the STD file of the large models that are slow (ray@ca.reiusa.com).

RE: Solver Performance

(OP)
Hi RAYC1 and thanks for your reply

No there are no master/slave in the models. Actually they are a pretty straightforward mix of beams (members) and plates (elements).There are lot of internal releases if that means anything.

I don't know if I can send you the models due to proprietary rights, but I will definetly ask. I see that you work for rei and that makes your input very interesting.

I will get back to you asap.

Regards

Thomas

RE: Solver Performance

(OP)
Unfortunately the model is "secret", don't ask me why so I can't follow-up this question.

Just out of curiousity, whay kind if triangulization does STAAD use? Is it full-matrix or some more efficient method. I've seen that there is a band-width-reduction.

One problem might be that the stucture we are working with will give a larger bandwidth than the "average" spaceframe.

Thank you RAYC1 for trying.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources