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From "Neil Conway (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MESOS-3997) Switch to fixed-point for resources
Date Wed, 27 Jan 2016 18:44:39 GMT

     [ https://issues.apache.org/jira/browse/MESOS-3997?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Neil Conway updated MESOS-3997:
-------------------------------
    Epic Name: Fixed Point Resources  (was: Fixed Point)

> Switch to fixed-point for resources
> -----------------------------------
>
>                 Key: MESOS-3997
>                 URL: https://issues.apache.org/jira/browse/MESOS-3997
>             Project: Mesos
>          Issue Type: Epic
>          Components: allocation, master
>            Reporter: Neil Conway
>              Labels: mesosphere, resources
>
> Using floating point for resources is problematic, because roundoff and precision errors
when doing resource math can produce unexpected results.
> Instead, we should probably adopt a fixed-point representation: e.g., CPU resources will
be measured as an integer number of fractional CPUs (e.g., 25 deci-CPUs == 2.5 CPUs).



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