Class Ad Conversion Timeline

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New ClassAd Conversion TimeLine

Benchmarks

See ticket #227 for details on this work.

1. A benchmark that instantiates N classads, adds A attributes into it, and then deletes them. Compare execution time and size b/w new and old classads.
   • Nick DONE

2. A benchmark that instantiates N classads, then does a constraint evaluation on all of them. Compare execution time and size b/w new and old classads.
   • Nick DONE

3. Grab the output of condor_status -l off one of the collectors (?) on a pool to get all the machine classads in the pool into a text file. Suck this up into a program which instantiates a classad for each of these machines. (Maybe make 10 instances of classads for each machine to magnify results). Check memory footprint; compare b/w new and old classads.
   • Nick Done

4. Similarly with a job queue, grab the job classads, and suck them into a program which instantiates classads for each job in the text file. (Magnify as needed). Check memory footprint; compare b/w new and old classads.
   • Nick Done

Analyze data, determine whether to procede or not

• Monday, June 1, 2009

Conversion

Detailed time estimates for individual {quote:ClassAd} methods are also available. The ClassAd conversion TODO has more details on these individual blocks.

Pre-Flag Day Tasks

• Compatibility functions block 1:
  • ClassAd::Assign() DONE
  • ClassAd::LookupString(MyString) DONE
  • ClassAd::Insert(const char*) DONE
  • ClassAd::put()
  • ClassAd::initFromStream()
  • ClassAd::AssignExpr() DONE
  • ClassAd::clear() DONE
  • ClassAd::EvalString(const char*, const class AttrList*, char**)
  • ClassAd::EvalString(const char*, const class AttrList*, MyString&)
  • ClassAd::NextNameOriginal() DONE
  • ClassAd::ResetName() DONE
  • ClassAd::sPrintExpr()
  • ClassAd::NextDirtyExpr()
  • ClassAd::SetDirtyFlag()
  • ClassAd::GetDirtyFlag()
  • ClassAd::GetReferences()
  • ClassAd::ChainCollapse()
  • ClassAd::EscapeStringValue()
  • ClassAd::CopyAttribute()
  • ClassAd::fPrintAsXML()
  • ClassAd::sPrintAsXML()
  • ClassAd::IsValidAttrValue()
• Write helper functions for these methods which we can't emulate transparently:
  • ExprTree::PrintToNewStr() DONE
  • ExprTree::PrintToStr() DONE
  • ExprTree::EvalTree()
• Add ClassAds functions that are in old ClassAds but not in new ClassAds:
  • stringListSize()
  • stringListSum()
  • stringListAve()
  • stringListMin()
  • stringListMax()
  • stringListMember()
  • stringListIMember()
  • stringListRegexpMember()

Flag Day Tasks

• Change most or all references to ClassAd and AttrList with CompatClassAd.
• Swap in Varghese's new ClassAdList class.
• Fix up the one or two callsites in matchmaker.cpp that move an ad from one ClassAdList to another.
• The following methods will need some fixing at the callsites:
  • ClassAd::Insert(ExprTree*)
  • ClassAd::Lookup()
  • ExprTree::RArg()
  • ExprTree::LArg()
  • ExprTree::PrintToNewStr()
  • ExprTree::EvalTree()
  • ClassAd::NextExpr()
  • ClassAd(char*,char)
  • ExprTree::PrintToStr()
  • ExprTree::DeepCopy()
  • ExprTree::MyType()
  • ClassAd::ExchangeExpressions() DONE
  • ClassAd::unchain() DONE
  • ClassAd::RestoreChain() DONE
  • AttrList::put()

Post-Flag Day Tasks

• As time permits, rewrite callsites to make CompatClassAd unnecessary. The modified callsites can either use native new ClassAd methods or newly-written free-standing functions.
  • Replace all usage of attribute CurrentTime with ClassAd function time(). This can start before the flag day.

This work is supported by NSF under Cooperative Agreement OAC-2030508 as part of the PATh Project. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the NSF. Site built using CVSTrac.