From schnetter at cct.lsu.edu  Wed Aug 12 10:46:17 2009
From: schnetter at cct.lsu.edu (Erik Schnetter)
Date: Wed, 12 Aug 2009 17:46:17 +0200
Subject: [Developers] ExternalLibraries arrangement
Message-ID: <8764ECA3-80AC-4AF1-9B8C-66FEA58E975A@cct.lsu.edu>

I have created a new arrangement ExternalLibraries, available  
anonymously from cvs at cvs.cactuscode.org:/arrangements.  This  
arrangement is meant for thorns that wrap (i.e., contain) libraries  
that are external to Cactus, such as e.g. curl.  Having these  
libraries available as Cactus thorns makes it convenient to distribute  
and build them on remote machines.

These thorns contain configuration scripts that build the libraries  
into a configuration's scratch directory, using the compilers and  
options specified for that configuration.  The disadvantage compared  
to system-wide installed libraries is that they exist once per  
configuration, not once per user or once per system.  In many cases,  
the ease of having the libraries available without hassle makes up for  
this.

This arrangement complements in some sense the the arrangement  
CactusExternal, which mostly contains configuration scripts for using  
pre-installed libraries.  The idea is that these two arrangements  
contain thorns with the same names, so that one can quickly decide via  
a thorn list whether a pre-installed or a self-installed library is  
used.

If you are using any libraries currently in this arrangement  
(currently F5, curl, flickcurl, and libxml2), then please take a  
moment to test the libraries and their configuration scripts.  Once  
they have been tested, we can announce them to a wider audience, and  
add more libraries if there is a demand.

-erik

-- 
Erik Schnetter <schnetter at cct.lsu.edu>   http://www.cct.lsu.edu/~eschnett/

My email is as private as my paper mail.  I therefore support encrypting
and signing email messages.  Get my PGP key from <http://pgp.mit.edu>.



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From schnetter at cct.lsu.edu  Fri Aug 14 09:20:09 2009
From: schnetter at cct.lsu.edu (Erik Schnetter)
Date: Fri, 14 Aug 2009 16:20:09 +0200
Subject: [Developers] Detecting duplicate symbols
Message-ID: <E19DCEE3-AF21-40D6-B9F4-6DDFF0797292@cct.lsu.edu>

If two thorns define the same routine or the same global variable,  
then this is very difficult to detect.  This can happen easily, e.g.  
when one copies a thorn to modify it ? this may be one of the first  
steps a beginner takes.

The enclosed patch analyses the thorn libraries before the final  
executable is built.  It checks for duplicate symbols and aborts if it  
finds them.  It also emits warnings about thorns using symbols from  
other thorns without declaring this to the flesh (via  
configuration.ccl).

Please give it a try.  It may not work on all systems (e.g. when the  
"nm" command cannot be found), and in this case the check should be  
omitted; this should not abort the build.

-erik

-- 
Erik Schnetter <schnetter at cct.lsu.edu>   http://www.cct.lsu.edu/~eschnett/

My email is as private as my paper mail.  I therefore support encrypting
and signing email messages.  Get my PGP key from <http://pgp.mit.edu>.


Index: make.configuration
===================================================================
RCS file: /cactusdevcvs/Cactus/lib/make/make.configuration,v
retrieving revision 1.89
diff -u -r1.89 make.configuration
--- make.configuration	25 Jan 2008 15:03:12 -0000	1.89
+++ make.configuration	14 Aug 2009 14:19:29 -0000
@@ -126,6 +126,7 @@

  # Build the executable
  $(EXEDIR)$(DIRSEP)$(EXE): $(CONFIG)/make.thornlist $(CONFIG)/ 
cctki_version.h $(patsubst %,$(CCTK_LIBDIR)/$(LIBNAME_PREFIX)$ 
(CCTK_LIBNAME_PREFIX)%$(LIBNAME_SUFFIX),$(notdir $(THORNS) $ 
(CACTUSLIBS)))
+	$(PERL) -s $(CCTK_HOME)/lib/sbin/CheckThornLibs.pl $(EXE) $(THORNS)
  	@echo Creating $(EXE) in $(EXEDIR) from $(THORNS)
  	datetime=`/bin/date +'%Y-%m-%dT%H:%M:%S%z' 2>&1` ; \
  	if [ $$? != 0 ]; then datetime=`/bin/date` ; fi ; \

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From knarf at cct.lsu.edu  Fri Aug 14 18:25:34 2009
From: knarf at cct.lsu.edu (Frank Loeffler)
Date: Fri, 14 Aug 2009 18:25:34 -0500
Subject: [Developers] Detecting duplicate symbols
In-Reply-To: <E19DCEE3-AF21-40D6-B9F4-6DDFF0797292@cct.lsu.edu>
References: <E19DCEE3-AF21-40D6-B9F4-6DDFF0797292@cct.lsu.edu>
Message-ID: <20090814232534.GO24677@numrel07.cct.lsu.edu>

Hi,

On Fri, Aug 14, 2009 at 04:20:09PM +0200, Erik Schnetter wrote:
> The enclosed patch analyses the thorn libraries before the final
> executable is built.

Thanks a lot for this patch, this will with no doubt help in the future.

> It checks for duplicate symbols and aborts if
> it finds them.  It also emits warnings about thorns using symbols
> from other thorns without declaring this to the flesh (via
> configuration.ccl).

I tried it with one of my usual configurations which uses quite
a lot of thorns and it seemed to work so far - it built and it also gave
(a lot of) warning about undeclared dependencies. I will have to look
into quite some of them...

thanks, Frank


From schnetter at cct.lsu.edu  Tue Aug 18 07:35:23 2009
From: schnetter at cct.lsu.edu (Erik Schnetter)
Date: Tue, 18 Aug 2009 14:35:23 +0200
Subject: [Developers] GetCactus
Message-ID: <DBBC54F0-2F0C-4DBD-BE3B-4959A4B9C12E@cct.lsu.edu>

I just updated the GetCactus script with a more generic mechanism to  
construct repository names from arrangement and thorn names.  Patterns  
@ARRANGEMENT@ and @THORN@ are now replaced by the arrangement and  
thorn names, respectively.  This is slightly more generic than the  
current T:* mechanism, which replaces a star (*) with both the  
arrangement and thorn names.

This is necessary to check out the AstroGrid thorns from svn.

-erik

-- 
Erik Schnetter <schnetter at cct.lsu.edu>   http://www.cct.lsu.edu/~eschnett/

My email is as private as my paper mail.  I therefore support encrypting
and signing email messages.  Get my PGP key from <http://pgp.mit.edu>.



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From schnetter at cct.lsu.edu  Tue Aug 18 07:57:08 2009
From: schnetter at cct.lsu.edu (Erik Schnetter)
Date: Tue, 18 Aug 2009 14:57:08 +0200
Subject: [Developers] GetCactus
In-Reply-To: <DBBC54F0-2F0C-4DBD-BE3B-4959A4B9C12E@cct.lsu.edu>
References: <DBBC54F0-2F0C-4DBD-BE3B-4959A4B9C12E@cct.lsu.edu>
Message-ID: <9D174A99-309C-4256-A3F3-2ECBFB9AC8F3@cct.lsu.edu>

On Aug 18, 2009, at 14:35:23, Erik Schnetter wrote:

> I just updated the GetCactus script with a more generic mechanism to  
> construct repository names from arrangement and thorn names.   
> Patterns @ARRANGEMENT@ and @THORN@ are now replaced by the  
> arrangement and thorn names, respectively.  This is slightly more  
> generic than the current T:* mechanism, which replaces a star (*)  
> with both the arrangement and thorn names.


How do I update the GetCactus script on the new web server?  The web  
server looks for a file "/var/www/cvs/Utilities/Scripts/GetCactus"  
that should presumably be updated somehow.

-erik

-- 
Erik Schnetter <schnetter at cct.lsu.edu>   http://www.cct.lsu.edu/~eschnett/

My email is as private as my paper mail.  I therefore support encrypting
and signing email messages.  Get my PGP key from <http://pgp.mit.edu>.



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From knarf at cct.lsu.edu  Mon Aug 31 10:49:23 2009
From: knarf at cct.lsu.edu (Frank Loeffler)
Date: Mon, 31 Aug 2009 10:49:23 -0500
Subject: [Developers] CactusEOS/EOS_Ideal_Fluid
Message-ID: <20090831154922.GR18118@numrel07.cct.lsu.edu>

Hi,

are there objections for making the parameter eos_ideal_fluid_gamma in
CactusEOS/EOS_Ideal_Fluid restricted from now private? This way other
thorns can use this parameter.

Frank