The OpenSees Community

Dear Frank. I already reported the problem via Feedback at the NEEShub page. The ticket number is 1697. I hope to hear good news from you and the NEEShub Team in the coming days.

Thanks.

Dear Frank. Yesterday I ran the same model (without making any modifications to the script) and the same error appeared again. But this time for the fifth simulation. It seems that the error is being generated randomly.

About your suggestion on doing scp at the end of the run, I think it will not help much, because of the small amount of space that is delivered to the "basic" user; just 1GB as you mentioned on an earlier post. As a consequence, not the right way to go for me. And asking for a ticket to increase the amount of space is almost impossible since my research is being developed in Colombia and will be concluded soon.

I can send you my script via email if you want.

As of your last question, if you think that will help to improve the communication between you and us (the OpenSees Community), then why not!!! Any enhancement to the system is really appreciated.

Thank you!

Dear Frank. I am trying to run a parameter study simulation using OpenSees in the clouds. The simulation consists of a model subjected to 100 earthquake excitations in a single run. The simulation runs just fine till the tenth simulation, but when OpenSees is ready to perform the next simulation, it throws me the following message "couldn't execute "bash": I/0 error". My question is whether OpenSees in the clouds has been restricted to prevent the user to perform more than 10 simulations in one run. I have to say that I am using bash to perform some operations like tar'ing and scp'ing to send some files automatically to my workstation each time a simulation is complete. In total there are 100 simulations.

Many thanks!

P.S. In addition I would like to know the current status of OpenSeesMP in the clouds… I am very excited with the inclusion of that feature in an upcoming update.

Dear castonguay.pierre,

Would you tell me how did you solve the problem?

Thanks.

Hi Frank. I am trying to run a simulation which requires connection to the NGA Database from a windows 2008 server of 64-bit which is behind a proxy. When OpenSees is ready to make connection to this database, it throws the following message:
"PeerNGAMotion::PeerNGAMotion() - could not connect to PEER Database, "

However, if the simulation is run from another computer using windows xp, which is also behind the same proxy, it runs without problems.

As you can see the problem is very singular.

Any insight will be greatly appreciated.

P.S. I am using a 32-bit version of OpenSees which runs on a 64-bit version of Windows 2008 Server.

Would you try using another material, e.g. Concrete04? According to my experience using OpenSees, Concrete02 and 03 have always been the only ones that never work to me because of the choice of an adequate lambda for the model.

Hi Vesna/Frank. I am performing a seismic simulation using a set of 400 NGA ground motions (gmotions). Such gmotions are downloaded automatically by OpenSees during the dynamic analysis. However, since some of them change of value abruptly in some intervals of time, I was wondering if OpenSees has the option to increment the number of steps at those problematic points accordingly (which by default is 1) to compute the local response properly. I mean, if the gmotion has, for example, 4000 points recorded, then the number of steps required to make a complete analysis (by default) is 4000. For the sake of simplicity, I will not select the intervals of time which are problematic but instead I will increase the number of steps to 12000 (3 steps between points). Is there any way to do that besides the other solution of downloading all the gmotions to my workstation and then making a preprocessing of them to increase the number of points to 12000? Some time ago I heard Frank/user suggesting/asking the same thing, but do not remember how all this ended up...

Many thanks!

Hi Frank. In Beam2dUniformLoad.cpp, an "endln" was forgotten in the last line of the following.

----------------------------------------
void
Beam2dUniformLoad::Print(OPS_Stream &s, int flag)
{
s << "Beam2dUniformLoad - Reference load" << endln;
s << " Transverse: " << wTrans << endln;
s << " Axial: " << wAxial << endln;
s << " Element acted on: " << eleTag;
}
----------------------------------------



Print command is printing, for example, this:
----------------------------------------
Elemental Loads:
Beam2dUniformLoad - Reference load
Transverse: -0.72
Axial: 0
Element acted on: 210102Beam2dUniformLoad - Reference load
Transverse: -0.72
Axial: 0
Element acted on: 210103Beam2dUniformLoad - Reference load
Transverse: -0.72
Axial: 0
Element acted on: 210104Beam2dUniformLoad - Reference load
Transverse: -0.72
Axial: 0
Element acted on: 210105Beam2dUniformLoad - Reference load
.....
----------------------------------------

Thanks.

Hi Frank. I am getting this error after trying to compile OpenSeesMP 2.2.2.a (on a mac computer):

---------------------------------
Undefined symbols:
"MPIDiagonalSOE::MPIDiagonalSOE(MPIDiagonalSolver&)", referenced from:
specifySOE(void*, Tcl_Interp*, int, char const**) in commands.o
"MPIDiagonalSolver::MPIDiagonalSolver(double)", referenced from:
specifySOE(void*, Tcl_Interp*, int, char const**) in commands.o
---------------------------------

The source code was downloaded this morning via svn. Many thanks!

Hi Frank. Is there any way to request information about objects that have been defined in the domain by just using Tcl/OpenSees commands?

For example, if I defined:

node 1 0.00 0.00
node 2 0.00 3.60
node 3 8.00 3.60
node 4 8.00 0.00

and wanted to ask about what nodes are currently defined in the domain, what command should I use?

Any comment will be greatly appreciated. Thanks!

Hi Frank. Would you tell me the processor speed that the user has to run its simulations in the cloud?. Thanks.

Never mind... everything is working beautifully now...

Hi Frank. Thanks for reply.

scp is available... however the prompt does not let me to input the arroba symbol (@) in order to be able to write my host.name (username@my.IP.add.ress)

Now I am thinking of connecting my workstation to the cloud via ssh. However I tried the following but did not work...

[code]
ssh oleviuqserh@nees.org
oleviuqserh@nees.org's password: ******
[/code]

Also tried:

[code]
ssh oleviuqserh@128.46.19.105
oleviuqserh@128.46.19.105's password: ******
[/code]

Next, after waiting 20 minutes response from the server side, I decide to input something, for example, ls, but then it throws me this message:

Connection to nees.org closed.
or
Connection to 128.46.19.105 closed.

Then my question is... can we use ssh to connect our workstations to the cloud?

Any idea? I am actually asking about a "unix command" which can make the job mentioned above...

All the information I have found in the internet points to using scp. This command requires that user inputs a host.name which is not available to find in the neeshub page... Please could you tell me how is it?

Thanks.

Hi Frank. Where can we download the source code of OpenSees 2.1.0? I would like to test something that is failing in the current release.

Thanks.