Possibly-problematic-memory-usage.md

+* Description: A generally high memory usage or increase of memory usage can be dangerous if the user isn't aware of it, as it can easily lead to a job cancellation due to OOM.
+* Criterion:
+  * high memory usage: the memory used by a process is very high compared to the memory requested by the job, e.g., used>=0.9*requested. This should be seen as a warning instead of because of the danger of the job failing by running out of memory.
+  * systematic increase of memory usage: the memory used by the job grows roughly linearly with time over large stretches of the job. This could be seen as a warning because of the danger of the job failing by running out of memory.
+  
+* Works for shared jobs with existing metrics:
+  * no, because no job-specific memory usage is recorded right now
+  
+* Possible false positives:
+  * workload with naturally high memory usage or increase pattern
+
+* Possible cures/workarounds:
+  * increasing memory usage: 
+    * possibly a memory leak:
+      * Check the code
+      * often: try other MPI implementations
+  * high memory usage:
+    * request more memory