[LHAPDF-announce] LHAPDF survey

[Mike Whalley]

Dear LHAPDF user,

We are currently engaged in designing a major upgrade to LHAPDF, to 
enable us to reduce memory overheads, remove usage restrictions, and 
break down the barriers that currently make it difficult for both PDF 
groups and LHAPDF developers to add new sets. Such an update will 
require significant changes to the LHAPDF code, while also subject to 
the constraint that it can be used with the most important legacy code.

To help us in our re-design it's important that we hear from you, the 
users, on how you are using LHAPDF and what (if any) behaviours you 
would like to see change or stay the same. Please take a minute or two 
to answer the questions below: delete any sample answers (starting with 
a '*') and add extra comments if you think they could be helpful!

1. How are you using LHAPDF?
 * Showered & hadronised MC event generation (private)
 * Showered & hadronised MC event generation (large-scale production)
 * Fixed order MC calculation
 * Other (please specify)

2. What code interface do you use to access LHAPDF?
 * LHAPDF Fortran
 * LHAGLUE Fortran (like PDFLIB, used in e.g. Pythia 6)
 * C++ wrapper
 * Python wrapper
 * lhapdf-query script

3a. If using Fortran, do you access LHAPDF common blocks directly?

3b. If you answered yes to 3a, which ones?
 * PDFLIB w50511, w50512, w50513
 * LHAPDF LHAPARM
 * Other (please specify)

4. If you can provide us with any code snippets of your typical LHAPDF 
use, particularly if you answered yes to question 3, please attach them 
to your reply.

Best wishes,
The LHAPDF (re)developers