Centos9 enable powertools to install protobuf-compiler

 

dnf config-manager --set-enabled crb

yum install protobuf-compiler 

Fedora turn off zram swap

swapoff /dev/zram0; zramctl --reset /dev/zram0
yum remove zram-generator-defaults -y
touch /etc/systemd/zram-generator.conf

Install NVIDIA drives Fedora

dnf install   https://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-$(rpm -E %fedora).noarch.rpm -y

dnf install   https://download1.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-$(rpm -E %fedora).noarch.rpm -y

dnf update -y

reboot

#fedora 38
dnf module disable nvidia-driver

dnf install akmod-nvidia xorg-x11-drv-nvidia-cuda clinfo nvtop -y

reboot

clinfo

 

 

dnf upgrade --refresh

dnf autoremove nvidia* --purge

dnf config-manager --add-repo https://developer.download.nvidia.com/compute/cuda/repos/fedora37/x86_64/cuda-fedora37.repo

dnf install kernel-headers kernel-devel tar bzip2 make automake gcc gcc-c++ pciutils elfutils-libelf-devel libglvnd-opengl libglvnd-glx libglvnd-devel acpid pkgconfig dkms

dnf module install nvidia-driver:latest-dkms

Trim all flash drive HBA

 NVME SSD

• nvme format /dev/nvme0n1

SATA/SAS SSD

• blkdiscard /dev/sda
  

Find flags with which a file was opened

 lsof +fg /chia/scratch/disk01/subspace/plot3/plot-index-to-offset/000017.sst
COMMAND      PID         USER   FD   TYPE FILE-FLAG DEVICE SIZE/OFF        NODE NAME
subspace- 134267 srv_subspace  273r   REG     LG,CX  254,6 67377874 45101533594 /chia/scratch/disk01/subspace/plot3/plot-index-to-offset/000017.sst

 

# man lsof |grep "Flag in C code" -A 21
                          Abbrev.   Flag in C code (see open(2))

                          W         O_WRONLY
                          RW        O_RDWR
                          CR        O_CREAT
                          EXCL      O_EXCL
                          NTTY      O_NOCTTY
                          TR        O_TRUNC
                          AP        O_APPEND
                          ND        O_NDELAY
                          SYN       O_SYNC
                          ASYN      O_ASYNC
                          DIR       O_DIRECT
                          DTY       O_DIRECTORY
                          NFLK      O_NOFOLLOW
                          NATM      O_NOATIME
                          DSYN      O_DSYNC
                          RSYN      O_RSYNC
                          LG        O_LARGEFILE
                          CX        O_CLOEXEC
                          TMPF      O_TMPFILE

Blacklist Nouveau to install NVIDIA native GPU drivers

 

• Create the /usr/lib/modprobe.d/blacklist-nouveau.conf file and add the following information to the file.

  blacklist nouveau

  options nouveau modeset=0

• Re-generate initramfs.

  $sudo dracut --force

   

   

   

  https://support.huawei.com/enterprise/en/doc/EDOC1100165479/93fe5683/how-to-disable-the-nouveau-driver-for-different-linux-systems
  

FFMPEG on Fedora 34

dnf install \
https://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-$(rpm -E %fedora).noarch.rpm \
https://download1.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-$(rpm -E %fedora).noarch.rpm

dnf update

dnf search ffmpeg

dnf install ffmpeg

 

https://www.cyberciti.biz/faq/how-to-install-ffmpeg-on-fedora-linux-using-dnf/