CPU Memory does not free when program is closed

[danindiana]

CPU Memory does not free when program is closed. I've also noticed this is the case sometimes, and more often than not when running the char-rnn using the GPU. Something about this code keeps it from returning system memory.

yyyyy- -yyyyyy+ OS: ubuntu Ubuntu 14.04 trusty
://+//////-yyyyyyo Kernel: x86_64 Linux 3.13.0-117-generic
.++ .:/++++++/-.+sss/ Uptime: 1d 10h 42m .:++o: /++++++++/:--:/- Packages: 4044 o:+o+:++...```.-/oo+++++/ Shell: bash 4.3.11
.:+o:+o/. +sssoo+/ Resolution: 1920x1080 .++/+:+oo+o: /sssooo. DE: Gnome 3.9.90
/+++//+:`oo+o /::--:. WM: GNOME Shell
+/+o+++`o++o ++////. WM Theme: Adwaita
.++.o+++oo+:` /dddhhh. GTK Theme: Radiance [GTK2/3]
.+.o+oo:. `oddhhhh+ Icon Theme: elementary-xfce-darker
+.++o+o``-````.:ohdhhhhh+ Font: Cantarell 11
`:o+++ `ohhhhhhhhyo++os: CPU: AMD FX-8350 Eight-Core @ 4GHz
.o:`.syhhhhhhh/.oo++o` GPU: GeForce GTX 750 Ti
/osyyyyyyo++ooo+++/ RAM: 9524MiB / 24011MiB

total used free shared buffers cached
Mem: 23G 23G 269M 474M 2.6M 580M
-/+ buffers/cache: 22G 852M
Swap: 7.9G 0B 7.9G

24587684 K total memory
24275912 K used memory
20727748 K active memory
2323680 K inactive memory
311772 K free memory
4160 K buffer memory
642012 K swap cache
8286204 K total swap
0 K used swap
8286204 K free swap
15480791 non-nice user cpu ticks
4125500 nice user cpu ticks
1092240 system cpu ticks
78524870 idle cpu ticks
20165 IO-wait cpu ticks
13 IRQ cpu ticks
10378 softirq cpu ticks
0 stolen cpu ticks
18016848 pages paged in
35009268 pages paged out
0 pages swapped in
0 pages swapped out
343756237 interrupts
618772078 CPU context switches
1494613109 boot time
151113 forks