[Developers] Re: [Numrel-punctures] (no subject)

[Erik Schnetter]

On Thursday 05 May 2005 22:24, Jason Ventrella wrote:
> Does anyone know of any possible problems with activating the thorns:
> HTTPD, HTTPDExtra, and Socket for these Pre-ISCO runs?  If not, it
> has been suggested that we do so.

As far as I know, we debugged these thorns last year, so they should be 
safe.  That was "debugging" in the sense of not making simulations 
accidentally abort any more.

Thorn HTTPD responds very slowly unless you use the option 
"PTHREADS=yes" when configuring and the option 
"HTTPD::use_pthreads=yes" at run time.  This should be done at all 
times, and the thorn should probably be changed so that the latter is 
the default.

One potential problem with these thorns is that they allow steering, 
i.e., changing of parameters at run time.  This is dangerous because no 
record is kept who steers and which parameters are steered in what way.  
The default user name and passwords are both "anon", so that everybody 
with access to the machine can do this.  I therefore suggest to set the 
parameters "HTTPD::user" and "HTTPD::password" in each parameter file.

The default settings should be made secure, so that no steering is 
possible by default.  The default settings for user and password should 
be changed in such a way that people are forced to set these before 
steering is possible.

-erik

-- 
Erik Schnetter <schnetter at aei.mpg.de>   http://www.aei.mpg.de/~eschnett/

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