[Swift-devel] throttling parameters with coasters

Allan Espinosa aespinosa at cs.uchicago.edu
Tue Feb 24 18:52:29 CST 2009


In coasters, are throtte.submit, throttle.host.submit,
throttle.job.factor parameters ignored ?

Looking on how swift submits initial requests, it seems that
throttle.job.factor affects the number of coaster nodes it will submit
to the LRM. If I have
  <profile namespace="karajan" key="initialScore">1</profile>
    <profile namespace="karajan" key="jobThrottle">1</profile>
Swift spawns 4 coasters.  4*16=64 processors available to me.  I
observe that throughout the job this number did not increase

Next, in my swift.properties, I have
throttle.submit=4
throttle.host.submit=2

But in the runtime,

rogress:  Selecting site:2809 Submitting:17 Active:40 Stage out:31
Finished successfully:103
Progress:  Selecting site:2809 Submitting:17 Active:40 Stage out:30 Finished su

so the 2 parameters does not apply to coaster submissions?



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