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Wayness sets how many commands/tasks are run on each compute node. By default, wayness will be 68 64 (equal to the number of physical cores per node on stampede2lonestar6). Each task will then get 1/68th of the memory available for one node (96 GB of memory) = ~1.4 GB per task. Often, that is not enough memory per task or you may not even have 68 tasks in your commands file. Setting wayness to a number smaller than the default will allocate more memory per task.
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