[Swift-user] Throttling within Swift

[Michael Wilde]

Scott, its best to adjust the throttle using the sites file. Use these two xml elements in your <pool> element:

    <profile namespace="karajan" key="jobThrottle">.63</profile>
    <profile namespace="karajan" key="initialScore">10000</profile>

Always set initialScore to 10000.
Set the actual throttle by setting jobThrottle to (N-1)/100 to run N jobs at a time.

So for N=2,4,8,16 set jobThrottle to .01, .03, .07, and .15

Thats admittedly rather arcane, but works that way for historical reasons. We hope to simplify this in the future.

- Mike



----- Original Message -----
> From: "Scott Krieder" <skrieder at iit.edu>
> To: swift-user at ci.uchicago.edu
> Sent: Wednesday, June 6, 2012 5:07:03 PM
> Subject: [Swift-user] Throttling within Swift
> Quick question about throttling within Swift:
> 
> 
> I have a swift script that launches 64 binary files in parallel within
> a foreach loop.
> 
> 
> I would like Swift to throttle so that there are only 2 binaries
> running at any given time. Then I would like to change the throttle
> for 4, 8, and 16.
> 
> 
> I found several different layers at which I can change the throttle.
> For the above configuration should I change the throttle in my
> sites.xml or do I need to update the swift.properties file?
> 
> 
> Thank you,
> Scott
> 
> 
> Scott Krieder
> DataSys Laboratory
> Illinois Institute of Technology
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-- 
Michael Wilde
Computation Institute, University of Chicago
Mathematics and Computer Science Division
Argonne National Laboratory