MaxMemoryUsed reports the maximum amount of memory used, but it is only interacting to the current kernel. The memory may as well be (and is being) held onto by the process that last had it, and if some other program needed this memory it would be handed back to the system without a problem. Table], ] (* reassign data from pmcontrolstandtemp to \Ĭlear (* free up memory *)įirst off, you shouldn't be worried that Mathematica hasn't returned the memory to the system.
#HOW MUCH MEMORY DOES PARALLELS 13 TAKE UP ON MY MAC CODE#
Mathematica Code - (* load cel data *)Ĭelfilenames = FileNames (* names of data files to import *) Do these statements send a copy of the memory content to each parallel kernel?ĭo you have suggestions to solve this mystery of where is my memory? My code (posted below) does use several ParallelTable statements.
I have tried setting $HistoryLength = 0 and it has not made a difference in the reported memory usage. If this is true, why hasn't Mathematica cleared the 11.3 - 2.7 = 8.6 GB of memory it says it hasn't used and returned it to the system? After running the code, MaxMemoryUsed reports a value of 2.7 GB.Įven though Mathematica is reporting MaxMemoryUsed at 2.7Gb, my system is still reporting 13.2 GB of used memory. So, this means that running my code has consumed 13.2-1.9 = 11.3 GB of memory. These memory values are reported by an application external to Mathematica.Īfter I run the code I have developed, the amount of used system memory is 13.2 GB (free memory is 3.2 GB).
When I start Mathematica with a fresh kernel and load a program I am developing to analyze biology data, the amount of used system memory is 1.9 GB (free memory is 14.5 GB).
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