[LON-CAPA-users] LON-CAPA changing numbers?

Gerd Kortemeyer lon-capa-users@mail.lon-capa.org
Tue, 08 Oct 2002 09:33:56 -0400


Mark,

Actually, the problem between the different RedHat versions is that between Perl versions
the random number routine changed - we did not expect them to change that.

In the 0.6 version, we will call our own random number routine (meaning another break, but
from then on, we are independent from operating system changes as far as random numbers
go).

- Gerd.

Mark Lucas wrote:

> All three servers are running RH7.3.
>
> I'm trying to figure out the specific problem, as it may have been
> republished at some point, but I'm also looking for the information on the
> random seed creation. This will clue me in as to what has changed.
>
> What you're suggesting is that a different machine is giving a different
> random number in certain cases. I remember this being an issue with your
> installation up North of the old capa. Is there any chance of this here?
>
> (for example, if I have access servers that are three different RH
> installations, might there be three different random numbers in limited
> situations? I seem to remember seeing a random number check-in - did this
> fix this?)
>
>                                                 Mark
>
> On Tue, 8 Oct 2002, Gerd Kortemeyer wrote:
>
> > Could this have happened between a server running RedHat 6.2 printing the exam, and a
> > server running RedHat 7.3 showing it?
> >
> >
> > Mark Lucas wrote:
> >
> > > Has anybody seen this problem before where LON-CAPA changes the random
> > > numbers in the middle of an assignment?
> > >
> > > Can someone clarify what items of information are used when creating a
> > > random number seed for a student?
> > >
> > >                                                 Mark
> > >
> > > ----------------------------------------------------------------------------
> > > Mark Lucas                                      email: lucasm@ohiou.edu
> > > 252D Clippinger Lab                             phone: (740)597-2984
> > > Department of Physics and Astronomy             fax:   (740)593-0433
> > > Ohio University
> > > Athens, OH 45701
> > >
> > > ---------- Forwarded message ----------
> > > Date: Tue, 8 Oct 2002 06:19:57 -0400 (EDT)
> > > From: Daniel S. Carman <carman@carman1.phy.ohiou.edu>
> > > To: lucasm@ohiou.edu
> > > Subject: Re: P251 Exam (fwd)
> > >
> > > Mark,
> > >
> > > I include below an occurrence that has happened to me once before too.
> > > LON-CAPA changing the numbers in a given problem from what they were
> > > when they first printed the assignment out.
> > >
> > >                                         Daniel
> > >
> > > **********************************************************************
> > > *                                                                    *
> > > * Dr. Daniel S. Carman                   e-mail : carman@ohio.edu    *
> > > * Ohio University                        office : (740)-593-2964     *
> > > * Department of Physics                  fax    : (740)-593-1436     *
> > > *                                                                    *
> > > **********************************************************************
> > >
> > > ---------- Forwarded message ----------
> > > Date: Mon, 07 Oct 2002 23:25:06 -0400
> > > From: Jeremy Miller <jm331801@ohio.edu>
> > > To: Daniel S. Carman <carman@carman1.phy.ohiou.edu>
> > > Subject: Re: P251 Exam
> > >
> > > Dear Dr. Carmen,
> > >         Thank you for finalizing everything with my exam.
> > >         I thought you would like to know that when I did my CAPA homework today, I
> > > found that the computer changed my numbers around from when I printed it
> > > off earlier.  Now, I caught the problem after about five tries, so
> > > everything is okay.  If this happened to anyone else, they might not have
> > > cought on.  Just thought you would like to know.
> > >         Jeremy Miller
> > > --On Monday, October 07, 2002 9:22 AM -0400 "Daniel S. Carman"
> > > <carman@carman1.phy.ohiou.edu> wrote:
> > >
> > > >
> > > >
> > > > Jeremy,
> > > >
> > > > I believe your situation regarding the P251 midterm exam is
> > > > finalized.  You will take the exam on Wednesday, October 9
> > > > from 7 p.m. until 10 p.m. in the same room with the remainder
> > > > of the class.  Please be sure to announce yourself to the
> > > > exam proctors.
> > > >
> > > >
> > > >                               Prof. Carman
> > > >
> > > >
> > > > **********************************************************************
> > > > *                                                                    *
> > > > * Dr. Daniel S. Carman                   e-mail : carman@ohio.edu    *
> > > > * Ohio University                        office : (740)-593-2964     *
> > > > * Department of Physics                  fax    : (740)-593-1436     *
> > > > *                                                                    *
> > > > **********************************************************************
> > > >
> > > >
> > >
> > > _______________________________________________
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> > > LON-CAPA-users@mail.lon-capa.org
> > > http://mail.lon-capa.org/mailman/listinfo/lon-capa-users
> >
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> >
>
> ----------------------------------------------------------------------------
> Mark Lucas                                      email: lucasm@ohiou.edu
> 252D Clippinger Lab                             phone: (740)597-2984
> Department of Physics and Astronomy             fax:   (740)593-0433
> Ohio University
> Athens, OH 45701