Speaker
Oliver Gutsche
(FERMILAB)
Description
The CMS software stack currently consists of more than 2 million lines of
code developed by over 250 authors with a new version being released every
week. CMS has setup a central release validation process for quality
assurance which enables the developers to compare the performance to
previous releases and references.
This process provides the developers with reconstructed datasets of real
data and MC samples. The samples span the whole range of detector effects
and important physics signatures to benchmark the performance of the
software. They are used to investigate interdependency effects of software
packages and to find and fix bugs.
This talk will describe the composition of the Release Validation sample
sets and list the development groups who requested and use these samples. It
especially points out the difficulties to compose coherent sample sets from
the various requests for release validation samples. All samples have to fit
within the available resource constraints. This is achieved by exploiting
synergies between the different requester use cases and sample requests.
Common to all use cases are the event processing workflows used to produce
the samples. They are modified compared to the production workflows to be
better suited for validation and described in more detail.
Overall, the talk will emphasize the importance of a central release
validation process for projects with a large code basis and significant
number of developers. It will summarize the extent and impact of the 2008
release validation sample production and can function as an example for
future projects.
| Presentation type (oral | poster) | oral |
|---|
Author
Oliver Gutsche
(FERMILAB)
