The Roadmap to New Releases

1www.cs.wisc.edu/condor

The Roadmap to New Releases

Todd TannenbaumDepartment of Computer SciencesUniversity of Wisconsin-Madisonhttp://www.cs.wisc.edu/condor

[email protected]


Stable vs. Development Series

› Much like the Linux kernel, Condor provides two different releases at any time: Stable series Development series

› Allows Condor to be both a research project and a production-ready system


Stable series

› Series number in version is even (e.g. 6.2.0)

› Releases are heavily tested

› Only bug fixes and ports to new platforms are added on a stable series


Stable series (cont.)

› A given stable release is always compatible with other releases from the same series

› Recommended for production pools


Development Series

› Series number in the version is odd (e.g. 6.1.17, 6.3.1)

› New features and new technology are added frequently

› Versions from the same development series are not always compatible with each other


Development Series (cont.)

› Releases are not as heavily tested

› Generally not recommended for production pools … unless new features are required … unless we recommend

otherwise :^)


Where is Condor Today?

› Version 6.3.2 being released asap – this is the v6.4.0 release candidate.

› We expect version 6.4.0 released by the end of March.


What’s new for Condor v6.4.0?


New Ports in 6.4.0

› Full support (with checkpointing and remote system calls): RedHat 7.x

(Linux 2.4.x kernel + glibc 2.2.x)


New Ports in 6.4.0 (cont.)

› ”Clipped" support (no checkpointing, PVM, or remote system calls, but all other functionality is available) Windows 2000 Mac OS X


Secure Communication› Secure network communication

Strong user authentication • Multiple methods supported: Kerberos,

X509, NT LanMan, …

Encryption Integrity

› Authorization based on host or user


New Job Universes

› MPI Universe Launch MPI jobs linked with MPICH

library

› Globus Universe Faster, more reliable, better

integrated

› Java Universe


Java Universe Jobuniverse = javaexecutable = Main.classjar_files = MyLibrary.jarinput = infileoutput = outfilearguments = Main 1 2 3queue

condor_submit


Why not use Vanilla Universe for Java jobs?

› Java Universe provides more than just inserting “java” at the start of the execute line Knows which machines have a JVM installed Knows the location, version, and

performance of JVM on each machine Provides more information about Java job

completion than just JVM exit code• Program runs in a Java wrapper, allowing Condor

to report Java exceptions, etc.


Java support, cont.

condor_status -java

Name JavaVendor Ver State Activity LoadAv Mem

aish.cs.wisc. Sun Microsy 1.2.2 Owner Idle 0.000 249

anfrom.cs.wis Sun Microsy 1.2.2 Owner Idle 0.030 249

babe.cs.wisc. Sun Microsy 1.2.2 Claimed Busy 1.120 123

...


Condor File Transfer

› Condor will transfer job files from the submit machine to the execute machine

› Files to send and/or receive specified at submit time

› Transfer is atomic All files are transferred, or transfer fails

› Appeared in v6.2 only in Condor for Windows


File Transfer, cont.

› Example: transfer_input_files = x, y, z … transfer_output_files = a, b, c …. transfer_files = [ ALWAYS | ONEXIT ]

› Note: Condor can automatically figure out output files Default: Send back any new/changed files


Remote I/O Socket› Job can request that the condor_starter

process on the execute machine create a Remote I/O Socket

› Used for online access of file on submit machine – without Standard Universe. Use in Vanilla, Java, …

› Libraries provided for Java and for C, e.g. :Java: FileInputStream -> ChirpInputStream

C : open() -> chirp_open()

Job

Fork

startershadow

HomeFile

System

I/O Library

I/O Server I/O Proxy

Secure Remote I/O

Local System Calls

Local I/O(Chirp)

Execution SiteSubmission Site


Job Policy Expressions› User can supply job policy

expressions in the submit file.› Can be used to describe a successful

run.on_exit_remove = <expression>on_exit_hold = <expression>periodic_remove = <expression>periodic_hold = <expression>


Job Policy Examples› Do not remove if exits with a signal:

on_exit_remove = ExitBySignal == False› Place on hold if exits with nonzero status or ran

for less than an hour: on_exit_hold = ((ExitBySignal==False) &&

(ExitSignal != 0)) || ((ServerStartTime – JobStartDate) < 3600)

› Place on hold if job has spent more than 50% of its time suspended:

periodic_hold = CumulativeSuspensionTime > (RemoteWallClockTime / 2.0)


Firewall Support› Port Restrictions

In condor_config file can specify: LOWPORT = x HIGHPORT = y All dynamic ports will be between x and y

inclusive

› Condor + Firewalls/Private Networks: Who: Se-Chang Son Time: 9am-12pm Weds Where: rm 3387


Condor on Windows› On both NT and Win2k› New universes added: MPI, Java,

Scheduler (and Globus in the works!)› DAGMan ported› CondorView ported› Run shadow + DAGMan as the user

Allows submission from directories on shared filesystems


And more…

› Unix Man pages

› Fetch/consolidate log files remotely

› ClassAd chaining

› Many DAGMan improvements

› Bug fixes, etc…


What’s Next?Future Directions

› Increased focus on standalone tools built with Condor Technology DAGMan NeST PFS HawkEye Condor-G …


What’s Next?

› Big Item: More focus on being a service

provider than just an end-user tool: Developer APIs / libraries SOAP access to services XML representations of user logs,

ClassAds, accounting info, etc.


More what’s next…

› Condor on Windows Increased support from Microsoft

Research Remote I/O Complete Shared Filesystem support Condor-G

› MPI Scheduling Improvements


More what’s next…› New version of ClassAds into Condor

Conditionals !! • if/then/else

Aggregates (lists, nested classads) Built-in functions

• String operations, pattern matching, time operators, unit conversions

Clean implementations in C++ and Java ClassAd collections


More what’s next…

› Re-write of the condor_schedd Performance enhancements and

lowered resource requirements (particularly RAM)

› Re-write of the checkpoint server Add secure communication NEST technology infusion Enhanced support for multiple servers Store meta-data along with checkpoint

files


Thank you for coming to Paradyn/Condor

Week!

Date post:	20-Jan-2016
Category:	Documents
Upload:	obelia
View:	18 times
Download:	0 times

The Roadmap to New Releases

Documents