Hi Matteo,

On 07/03/2015 04:39 PM, Matteo Scornajenghi wrote:
> Hello everyone,
> sorry to bother you but I've got some issues when I try to produce NTUPLES
> with MCFM, a Monte Carlo generation software.
>
> Whenever I try to produce an NTUPLE as output, either a segmentation error
> occurs or the following message pops up:
>
> RZOPEN. record length: 8192 > maximum safe value (8191 words).

Oh, ZEBRA. Not used very often nowadays.

> RZOPEN. You may have problems transferring your file to other systems
> or writing it to tape.
> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
> locf_() Warning: changing base from 0 to 7fff00000000!!!
> This may result in program crash or incorrect results
> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
>
> and the produced NTUPLES are either corrupted or empty (every entry is set
> to 0).
>
> This is how I setup the software:
>
> I untar the last version of LHAPDF 6, then I configure the installation:
>
> ./configure --prefix=[INSTALLATION PATH] --with-boost=[BOOST PATH]
> --disable-python
>
> then I execute make && make install
>
> Since I need CERNLIB to produce the NTUPLES and I was not able to find a
> specific version for SLC6,


There is one in the SLC6 repository, should not be that difficult to find:

pc.cern.ch[103] rpm -q CERNLIB
CERNLIB-2006a-5.slc6.i686
pc.cern.ch[104]

This is i686 "only", but that might even be safer than the x86_64, not 
sure how well zebra can digest 64 bitness.

> I've downloaded the following one:
>
>
> PC Linux Cern x86_64-slc5-gcc43-opt(Cernlib 2006)

Not far from that one there should also be a slc6 version, if you insist 
on x86_64.

Best regards,

Matthias

>
> Finally, I've untared MCFM-7.0 source code, put the path to CERNLIB and
> LHAPDF libraries in the Install file, setting USE_OMP to NO, NTUPLES to YES
> and PDFSET to LHAPDF in the makefile and executed:
>
> ./Install
>
> make
>
> I've created a symbolic link in Bin directory to LHAPDF's PDFsets and
> executed the program selecting process 146 in the Input.DAT file and
> setting .creatent. to true (in order to produce NTUPLES with:
>
> ./mcfm [relative path to the folder containing the input file] input.DAT
>
>
> Sorry again for bothering you with this.
>
> Cheers,
> Matteo
>