Merge pull request #3 from helldweller/master

Refactoring.
This commit is contained in:
Alexey Strekalovskiy 2018-06-23 14:50:57 +03:00 committed by GitHub
commit 540be8c10e
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2 changed files with 112 additions and 28 deletions

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# nvidia-patch
requirements:
- Ubuntu 17.10
- nvenc-compatible gpu
- kernel (<4.10.0)- 4.4.0-101-generic
- nvidia 378.13 driver
# step-by-step :
Requirements:
- ubuntu (< 18.04 for 375.39 nvidia driver or kernel < 4.15)
- nvenc-compatible gpu (https://developer.nvidia.com/video-encode-decode-gpu-support-matrix#Encoder)
- nvidia driver (patch availible for 375.39 or 396.24)
Download driver: https://yadi.sk/d/d87mf0y03WTbb5
chmod +x ./NVIDIA-Linux-x86_64-378.13.run
Tested on Ubuntu 18.04 LTS (GNU/Linux 4.15.0-23-generic x86_64)
./NVIDIA-Linux-x86_64-378.13.run
## step-by-step :
# check driver:
### Download driver
http://us.download.nvidia.com/XFree86/Linux-x86_64/375.39/NVIDIA-Linux-x86_64-375.39.run
http://us.download.nvidia.com/XFree86/Linux-x86_64/396.24/NVIDIA-Linux-x86_64-396.24.run
### Install driver 396.24
```bash
mkdir /opt/nvidia && cd /opt/nvidia
wget http://us.download.nvidia.com/XFree86/Linux-x86_64/396.24/NVIDIA-Linux-x86_64-396.24.run
chmod +x ./NVIDIA-Linux-x86_64-375.39.run
./NVIDIA-Linux-x86_64-396.24.run
```
### Check driver
```bash
nvidia-smi
```
mkdir ~/nvenc_backup
### Patch libnvidia-encode.so (with backup)
```bash
bash ./patch.sh
```
cd ~/nvenc_backup
### Silent patch libnvidia-encode.so
```bash
bash ./patch.sh -s
```
cp /usr/lib/x86_64-linux-gnu/libnvidia-encode.so.378.13 ~/nvenc_backup/
wget https://raw.githubusercontent.com/keylase/nvidia-patch/master/patch.sh
chmod +x patch.sh
./patch.sh ~/nvenc_backup/libnvidia-encode.so.378.13 /usr/lib/x86_64-linux-gnu/libnvidia-encode.so.378.13
reboot
### Rollback libnvidia-encode.so (restore from backup)
```bash
bash ./patch.sh -r
```
## See also
https://habr.com/post/262563/
If you experience `CreateBitstreamBuffer failed: out of memory (10)`, then you have to lower buffers number used for every encoding session. If you are using `ffmpeg`, consider using this [patch](https://gist.github.com/Snawoot/70ae403716c698cb86ab015626d72bd4).

86
patch.sh Normal file → Executable file
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#!/bin/bash
input=$1
output=$2
if [ -z $1 ]; then
echo "Require params - example: ./patch.sh <input file> <output file>"
exit
fi
sed 's/\x85\xC0\x89\xC5\x75\x18/\x29\xC0\x89\xC5\x90\x90/g' $input > $output
backup_path="/opt/nvidia/libnvidia-encode-backup"
silent_flag=''
rollback_flag=''
print_usage() { printf '
SYNOPSIS
patch.sh [OPTION]...
DESCRIPTION
The patch for libnvidia-encode to increase encoder sessions
-s Silent mode (No output)
-r Rollback to original (Restore lib from backup)
'
}
while getopts 'rs' flag; do
case "${flag}" in
r) rollback_flag='true' ;;
s) silent_flag='true' ;;
*) print_usage
exit 1 ;;
esac
done
if [[ $silent_flag ]]; then
exec 1> /dev/null
fi
declare -A patch_list=(
["375.39"]='s/\x85\xC0\x89\xC5\x75\x18/\x29\xC0\x89\xC5\x90\x90/g'
["396.24"]='s/\x85\xC0\x89\xC5\x0F\x85\x96\x00\x00\x00/\x29\xC0\x89\xC5\x90\x90\x90\x90\x90\x90/g'
# break nvenc.c:236,layout asm,step-mode,step,break *0x00007fff89f9ba45
# libnvidia-encode.so @ 0x15a45; test->sub, jne->nop-nop-nop-nop-nop-nop
)
driver_version=$(/usr/bin/nvidia-smi --query-gpu=driver_version --format=csv,noheader,nounits)
if [[ ! $? -eq 0 ]]; then
echo 'Something went wrong. Check nvidia driver'
exit 1;
fi
echo "Detected nvidia driver version: $driver_version"
patch=${patch_list[$driver_version]}
if [[ ! $patch ]]; then
echo "Patch for this ($driver_version) nvidia driver not found." 1>&2
echo "Available patches for: " 1>&2
for drv in "${!patch_list[@]}"; do
echo "$drv" 1>&2
done
exit 1;
fi
if [[ $rollback_flag ]]; then
if [[ -f $backup_path/libnvidia-encode.so.$driver_version ]]; then
cp $backup_path/libnvidia-encode.so.$driver_version \
/usr/lib/x86_64-linux-gnu/libnvidia-encode.so.$driver_version
echo "Restore from backup libnvidia-encode.so.$driver_version"
else
echo "Backup not found. Try to patch first."
exit 1;
fi
else
if [[ ! -f $backup_path/libnvidia-encode.so.$driver_version ]]; then
echo "Attention! Backup not found. Copy current libnvidia-encode to backup."
mkdir -p $backup_path
cp /usr/lib/x86_64-linux-gnu/libnvidia-encode.so.$driver_version \
$backup_path/libnvidia-encode.so.$driver_version
fi
sha1sum $backup_path/libnvidia-encode.so.$driver_version
sed "$patch" $backup_path/libnvidia-encode.so.$driver_version > \
/usr/lib/x86_64-linux-gnu/libnvidia-encode.so.$driver_version
sha1sum /usr/lib/x86_64-linux-gnu/libnvidia-encode.so.$driver_version
ldconfig
echo "Patched!"
fi