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| OPENMP API Specification: Version 5.1 November 2020

6.1  OMP_SCHEDULE

The OMP_SCHEDULE environment variable controls the schedule kind and chunk size of all loop directives that have the schedule kind runtime, by setting the value of the run-sched-var ICV.

The value of this environment variable takes the form:

[modifier:]kind[, chunk]

where

If the modifier is not present, the modifier is set to monotonic if kind is static; for any other kind it is set to nonmonotonic.

If chunk is present, white space may be on either side of the “,”. See Section 2.11.4 for a detailed description of the schedule kinds.

The behavior of the program is implementation defined if the value of OMP_SCHEDULE does not conform to the above format.

Examples:  

 
setenv OMP_SCHEDULE "guided,4" 
setenv OMP_SCHEDULE "dynamic" 
setenv OMP_SCHEDULE "nonmonotonic:dynamic,4"  

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