For reference, I just posted a report about a severe memory leak when using impi 2019 at https://software.intel.com/en-us/forums/intel-clusters-and-hpc-technology/topic/799987. Based upon my tests per k-point the memory use can increase by 50%.
Caveat: this may not be general, and could well be specific to my cluster. -- Professor Laurence Marks "Research is to see what everybody else has seen, and to think what nobody else has thought", Albert Szent-Gyorgi www.numis.northwestern.edu ; Corrosion in 4D: MURI4D.numis.northwestern.edu Partner of the CFW 100% program for gender equity, www.cfw.org/100-percent Co-Editor, Acta Cryst A
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