The LSF DRM option imposes significant overhead because of the sophisticated scheduling procedures. For resource-intensive, long-running work items, this improved scheduling is highly desirable to optimize the use of available computing resources. However, for short-running work items, this overhead may lead to reduced throughput for models with short-running components. To overcome this issue, an administrator can configure the SIMULIA Execution Engine to enable both the Fiper and LSF DRM options, a scenario known as Mixed-Mode DRM. Mixed-Mode DRM is enabled in the For example, the following settings enable both DRM types, with the Fiper DRM option being the default choice: fiper.system.drm=fiper fiper.system.drm.2=lsf When Mixed-Mode DRM is enabled, the SIMULIA Execution Engine
administrator can configure a maximum run time for work items that will
be dispatched using the Fiper DRM option. This configuration is used
to prevent model developers from overwhelming available Fiper DRM stations
with long-running or resource-intensive executions. Normally, the stations
using the Fiper DRM option are used for executing short-running work
items. If the administrator sets the For additional information on the use of Mixed-Mode DRM and setting the DRM mode for Isight components, see Configuring the LSF DRM Settings in the Isight Component Guide. |