1. James N. Bellinger University of Wisconsin at Madison 3 November 2010
Code Migration
James N. Bellinger
University of Wisconsin at Madison
3 November 2010
3 November 2010

2. Current Work Backup/Restore wget-based procedures: test shortly
Stephan provided a backup scheme
Need to exercise and document restore procedure
wget-based procedures: test shortly
CosmicMods crash
Camarda found un-initialized variable
New oracle_instant_client under test
3 November 2010

3. Code Tasks perl_dbd_oracle diskcache_i rootd TAuthenticate
Product-1
perl_dbd_oracle
DONE, now need to make sure everybody gets it
Product-2
diskcache_i
New version built against v5_14_00g: TESTING: Is testing done?
Product-3
rootd TAuthenticate
Partial list of incompatible versions
Product-4
tcsh bug
SOLVED
Product-5
Two names for each product
Expertise loss => need backup:IN PROGRESS
Tools-1
Code Browser
New location, new code
Tools-2
Code Browser non-CDF
Browse non-CDF utilities too, optionally?
Tools-3
Expanded validation suite
Code-1
CosmicMods crash
Think we’ve found it. PATCH?
Code-2
Uninitialized variables
A couple of libraries were examined
Code-3
Program Speedup
Possible approaches:
Code-3A
look for hot spots
1) single routine
Code-3B
Modules run several times!
2) investigate consolidation when running
Code-3C
Program Speedup: partition
3) Partitioning does not look promising
Code-4
Frontierize remote sites
Persuade remote sites to update/patch
Code-5
Get complete list of managers
Have 2/3, or all but a dozen of the official ones
Support-1
Non-RHEL support
Volunteers work on it, but no support?
Support-2
cdf.code rebuildable on failure?
Stephan has backup procedures, need to test restoration
Support-3
6.1.4int11.m
W-analysis will probably never stop using this version
3-November 2010

4. Wish List Let me know of others Large file support in root
File storage issues reduced if we use this
Wish-2
New release has working Stntuple
Wish-3
Joint MC + Production release
ONE RELEASE TO RULE THEM ALL…
Wish-3A
Decide on base: or 7.0.1
Tracking is main question?
Wish-3B
Combine BMC and regular MC
in progress
Wish-4
new root
7.0.1 is proof of principle
Wish-5
Use xrootd?
See Wish-4
Wish-6
EDM validation running
test utility
Wish-7
New MC engines in new release
Wish-8
Test with different compilers
long-term support issue
Wish-9
code cleanup
See Wish-8 and Code-5 and Code-2
Wish-10
Frontier: use current version?
Wish-11
CAF submit tools in product
Problem, data needs to be updated regularly
Wish-12
package pruning
See Code-5
Wish-13
Optimizing for 64-bit SL5
Wish-14
Products compiled 64-bit
Wish-15
64-bit CDF code/Stntuple/root
Let me know of others
3-November 2010

5. Products
Mixed bag
Critical items: cern, sam, etc
“Why do we bother with this ourselves?” gnuplot, dddebugger, imagelib, etc (available in rpms)
Actually, I think our dddebugger had a special patch, or perhaps it was our gdb
Somebody once thought it was a good idea: numpy, rrdtools, etc
Many products just have some ups info added to make it into a ups package: easy to make a new one
3-November-2010

6. Notes on 64-bit CDF code We have a request for 64-bit neurobayes
I’ve been told of queries about 64-bit CDF code
Why 64-bit?
Less hackiness to interface w/ root; maybe faster
But: parts of CDF code are chained to 32-bit, thanks to Geant3 (and probably other libraries too)
No tsunami of calls to move to Geant4
May be possible to have Stntuple analysis be 64-bit
If people want to make it work themselves, OK
But—there are subtleties in working up a new framework to support partial compilation—or a new release
May be more work than we can justify, even if volunteers do the heavy lifting
No bar to some of the products being 64-bit
perl bit size has to match that of the libraries it loads, though
Validation? Who is going to verify that even something simple like Stntuple analysis is unchanged when running 64-bit RHEL, or Ubuntu?
3-November-2010