hua-zhou / aw-area51

configuration and user guide for the Alienware Area 51 desktop

Hi there, I'm Dr. Hua Zhou 👋

I'm Professor of Biostatistics and Computational Medicine at University of California, Los Angeles (UCLA).

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aw-area51's Issues

Freeing unused RAM?

Hi Hua,

I noticed that on Area-51 there's ~20GB of RAM constantly occupied even though no user is running anything. Is there a way to free them?

Also, I realize sometimes my job goes into swp which occupies it indefinitely. I also don't know how to free swp as it doesn't seem to free itself even after a job dies...

ben

/dev/mapper/centos-root is 100% full

Hello Hua,

I've been filtering the HRC data for ~5 chromosomes and it caused /dev/mapper/centos-root to fill up. I deleted a lot of them and now there seems to be no problems, but that directory still seem to be full:

[biona001@REDLBISCOR01 ~]$ df -h
Filesystem               Size  Used Avail Use% Mounted on
/dev/mapper/centos-root   50G   50G   16K 100% /
devtmpfs                  32G     0   32G   0% /dev
tmpfs                     32G   49M   32G   1% /dev/shm
tmpfs                     32G  2.3G   30G   8% /run
tmpfs                     32G     0   32G   0% /sys/fs/cgroup
/dev/sda1                894G  341G  554G  39% /mnt/AppRun
/dev/nvme0n1p2          1014M  232M  783M  23% /boot
/dev/nvme0n1p1           200M   12M  189M   6% /boot/efi
/dev/mapper/centos-home  395G  153G  242G  39% /home
/dev/sdc                 5.5T  2.4T  3.2T  44% /mnt/Data2
/dev/sdb                 5.5T   43G  5.5T   1% /mnt/Data1
tmpfs                    6.3G   12K  6.3G   1% /run/user/42
/dev/sdd2                7.3T  7.1T  205G  98% /mnt/UKBiobank
tmpfs                    6.3G     0  6.3G   0% /run/user/1008
tmpfs                    6.3G     0  6.3G   0% /run/user/1007
tmpfs                    6.3G   12K  6.3G   1% /run/user/1005
tmpfs                    6.3G     0  6.3G   0% /run/user/1004
tmpfs                    6.3G     0  6.3G   0% /run/user/0
tmpfs                    6.3G     0  6.3G   0% /run/user/1006

I am not sure if this will cause any system-level problems. This post seems to suggest as long as the files are removed it should be okay, but I figured I would let you know in case this is problematic...

How to run code after logging out?

I have some scripts that potentially need >24 hours to run in Julia. Is there a way to run them without constantly being connected via ssh?