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code:work:lvisf:nonrt2017:start

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Table of Contents

Intro: Minimal CentOS 6.5

The Spectrum XMC1151 digitizer libraries we have require a specific flavour of Linux to operate.

Download the specific version by getting the http://vault.centos.org/6.5/isos/x86_64/CentOS-6.5-x86_64-minimal.iso which is the “minimal” CentOS 6.5.

Kernel from OS install 2016.04.14 

Linux lvisf 2.6.32-431.el6.x86_64 #1 SMP Fri Nov 22 03:15:09 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

Base CentOS

Using the 500_00746_r100_SDR7000_Linux_SG.pdf document, set up the core data system.

DVD Boot

NOTE: Press the Delete key while booting in order to change the boot to either the USB PLEXTOR drive or the LEXAR CFAST drive

  • BIOS → Boot → Boot Option #1
  • Then F4: Save & Exit
  1. Attached the external USB CDROM drive to the computer via the USB3 port (USB stick with UNETBOOTIN did NOT WORK for me?!) (UnetBootin will work with later version of CentOS image… 6.5 is broken)
  2. Insert the Minimal CentOS 6.5 Install Disk
  3. Boot and set the BIOS to boot off the Plextor drive (our USB based DVD drive)
  4. At CentOS 6 Welcome, Click → Next
  5. Language: English (English)
  6. Keyboard: U.S. English
  7. Storage Devices: Basic Storage Devices
  8. NOTE: If another OS detected, select: Fresh Installation (SURE YOU WANT TO DELETE THAT OS!?)
  9. Hostname: lvisf
  10. Timezone: New York
  11. root Password: the usual
  12. Partitioning: Use All Space
  13. Select the drive (for this case, the 60 GB (or 60000 MB drive) and put that to the right, then Write Changes
  14. Wait for install to complete (205 packages in ~4 minutes)
  15. Drive will eject
  16. Remove DVD
  17. Reboot

CentOS Configure

lvisf Config

Network Temporary Configuration (DHCP)

  1. Setup the system for DHCP for now
    1. Log in as root
    2. Modify /etc/sysconfig/network-scripts/ifcfg-eth0 so 
      ONBOOT=yes
    3. Startup network (will take a moment, DHCP) 
      sudo ifup eth0

Prerequisites for Compiling Kernel Modules

  1. Install the development tools 
    yum groupinstall 'Development Tools'
  2. Get some useful programs 
    yum install nano -y
yum install wget -y
  3. Grab the ethernet driver while you still have access
    1. Current driver is here: https://downloadmirror.intel.com/13663/eng/igb-5.3.5.3.tar.gz 
      mkdir ~/down
cd ~/down
wget https://downloadmirror.intel.com/13663/eng/igb-5.3.5.3.tar.gz

Ethernet Driver Install and Configuration

  1. Log in as root on the main console since ethernet will be disabled by default
  2. Install Intel ethernet drivers [Only needed if compiling on Kontron flight hardware]:
    1. Download igb-5.3.4.4.tar.gz to a USB drive
    2. Current driver is here: https://downloadmirror.intel.com/13663/eng/igb-5.3.5.3.tar.gz
    3. Uncompress in the home directory 
      tar xvf igb-5.3.4.4.tar.gz
    4. Build and install the drvier 
      cd ~/tmp/igb-5.3.4.4/src/
make
sudo make install
    5. Modify this module file 
      sudo nano /etc/sysconfig/modules/lvisf.modules
    6. Put the following into this file 
      #!/bin/sh

# start intel network driver
/sbin/modprobe igb
    7. Change permissions so this script runs at boot time 
      sudo chmod 755 /etc/sysconfig/modules/lvisf.modules
  3. Configure our network device
    1. Change the eth0 definition
      1. editing the config file 
        vi /etc/sysconfig/network-scripts/ifcfg-eth0
      2. to the following 
        DEVICE=eth0
HWADDR=00:80:82:1B:E7:04
TYPE=Ethernet
UUID=98bd88d8-8fe8-4b8e-bca0-a58bd3306717
ONBOOT=yes
NM_CONTROLLED=yes
BOOTPROTO=static
NAME="System eth0"
IPADDR=10.4.1.2
NETMASK=255.255.255.0
    2. Add our default gateway
      1. Edit the network configuration 
        vi /etc/sysconfig/network
      2. End up looking like this 
        NETWORKING=yes
HOSTNAME=lvisf
NETWORKING_IPV6=no
IPV6INIT=no
GATEWAY=10.4.1.1
    3. Ensure our name server can be found
      1. Edit resolv.conf 
        vi /etc/resolv.conf
      2. End up with this 
        search gsfc.nasa.gov
nameserver 128.183.10.134
nameserver 128.183.50.17
    4. Turn off IPV6 (found here: https://www.centos.org/forums/viewtopic.php?t=7989) 
      sudo sysctl -w net.ipv6.conf.default.disable_ipv6=1
sudo sysctl -w net.ipv6.conf.all.disable_ipv6=1
    5. Change the eth1 definition
      1. editing the config file 
        vi /etc/sysconfig/network-scripts/ifcfg-eth1
      2. to the following 
        DEVICE=eth1
HWADDR=00:80:82:1B:E7:05
TYPE=Ethernet
UUID=5eb0ea0f-b1e8-43ab-a64d-83d3d9e1dc95
ONBOOT=yes
NM_CONTROLLED=yes
BOOTPROTO=static
NAME="System eth1"
IPADDR=192.168.0.2
NETMASK=255.255.255.0
    6. Change the eth1:1 definition
      1. editing the config file 
        vi /etc/sysconfig/network-scripts/ifcfg-eth1:1
      2. to the following 
        DEVICE=eth1:1
HWADDR=00:80:82:1B:E7:05
TYPE=Ethernet
UUID=5eb0ea0f-b1e8-43ab-a64d-83d3d9e1dc95
ONBOOT=yes
NM_CONTROLLED=yes
BOOTPROTO=static
NAME="System eth1:1"
IPADDR=129.100.0.2
NETMASK=255.255.255.0
  4. REMOVE the keyboard and mouse and never use them again (USB interrupts)
  5. Add lvis user to the system (still as root (logged in via SSH for me now))
    1. Add the user 
      useradd lvis
    2. Set password 
      passwd lvis
  6. Add lvis user to the list of sudo users
    1. Modify the super user file with the following (as logged in as root) 
      visudo
    2. After the line that has root and ALL and ALL permissions, insert this line 
      lvis    ALL=(ALL)       ALL

File System Extras

  1. Add ntfs drive capability
    1. Add the epel repository 
      sudo yum install epel-release
    2. Add ntfs to our system 
      sudo yum install fuse fuse-ntfs-3g
  2. Add Exfat drive capability
    1. Add the epel repository and this Nux Dextop repository
      sudo yum install epel-release
sudo rpm -Uvh http://li.nux.ro/download/nux/dextop/el6/x86_64/nux-dextop-release-0-2.el6.nux.noarch.rpm
    2. Add Exfat to our system 
      sudo yum install exfat-utils fuse-exfat
    3. An example mounting an Exfat system is 
      sudo  mount -t exfat /dev/sdc1 /mnt/tmp

X11

  1. This will allow you to run X11 
    # core X11
sudo yum install xorg-x11-xauth xorg-x11-fonts-* xorg-x11-utils xterm -y
# required for tuna
sudo yum install xauth pygtk2-libglade -y
  2. Install tuna tuning package 
    sudo yum install tuna -y

Remove Unused Services

  1. Remove exim (NOTE, this was not on the CentOS Minimal I just installed 2018.01.04 (but leaving for historical))
    1. Stop the service 
      sudo service exim stop
    2. Remove the package from the system 
      sudo rpm -e --nodeps exim
  2. Remove auditd 
    sudo service auditd stop # now
sudo chkconfig auditd off # after reboot
  3. Remove postfix
    1. Stop the service 
      sudo service postfix stop
    2. Remove the package from the system 
      sudo rpm -e --nodeps postfix

Spectrum Config

Still as root logged into the main desktop

  1. Disable the Firewall
    1. Turn off the firewall 
      sudo service iptables stop
sudo service ip6tables stop
    2. Make this permanent 
      sudo chkconfig iptables off
sudo chkconfig ip6tables off
  2. Disable SELinux
    1. Edit the configuration file 
      sudo vi /etc/selinux/config
    2. Modify the file
      1. From 
        SELINUX=enforcing
      2. To 
        SELINUX=disabled
  3. Reboot for all changes to take place

Minimize Kernel Modules

  1. Disable ipv6, this addition is required along with a line in the modprobe file below
    1. Modifiy /etc/sysconfig/network 
      sudo vi /etc/sysconfig/network
    2. And append the following two lines 
      NETWORKING_IPV6=no
IPV6INIT=no
    3. Add these two lines to sshd_config 
      sudo nano /etc/ssh/sshd_config
# lvisf - ipv4 only
AddressFamily inet
ListenAddress 0.0.0.0
  2. Blacklist kernel modules we don't require
    1. Edit a file lvisf-blacklist.conf 
      sudo vi /etc/modprobe.d/lvisf-blacklist.conf
    2. Add the following lines 
      # lvisf kernel module blacklist
# version 1.0 - dlr - 20160418

# ipv6
blacklist ipv6

# NMI watchdog
blacklist iTCO_wdt 
blacklist iTCO_vendor_support

blacklist i2c_i801
# blacklist igb
blacklist lpc_ich
blacklist shpchp
blacklist dm_mirror

# intel sound
blacklist soundcore
blacklist snd
blacklist snd_seq
blacklist snd_hda_intel
blacklist snd_hda_codec_hdmi

# USB controller (still loads)
blacklist xhci_hcd


# this is required to REMOVE ipv6 module, I am not sure why
# http://www.cyberciti.biz/faq/redhat-centos-disable-ipv6-networking/
install ipv6 /bin/true

Extras

  • These two commands will remove some other modules I couldn't figure out how to make permanently go away 
    # USB driver... if you're using the nousb kernel, this will work
sudo modprobe --remove xhci_hcd
sudo modprobe --remove dm_mirror

Minimal Modules

Module                  Size  Used by
e1000                 170646  0 
sg                     29350  0 
ext4                  374902  3 
jbd2                   93427  1 ext4
mbcache                 8193  1 ext4
sd_mod                 39069  3 
crc_t10dif              1541  1 sd_mod
ahci                   42215  2 
i915                  624511  1 
drm_kms_helper         44321  1 i915
drm                   280012  2 i915,drm_kms_helper
i2c_algo_bit            5935  1 i915
i2c_core               31084  4 i915,drm_kms_helper,drm,i2c_algo_bit
video                  20674  1 i915
output                  2409  1 video
dm_mod                 84209  9

lvisf code

SVN Repository

:!: NOTE: This is obsolete (the repository link), but left here for posterity.

  • Dave Yancich sent me this note back in May: 
    Repository URL:  https://zj.yancich.com:8443/svn/NASA/trunk/lvisF
username "lvis"
password: standard lvis password

This is a cmake project.

To rebuild the make files:
In "build" directory type "cmake ../"
Then "make" to build everything.
"make clean" to clean the programs and kernel modules.

Build Document

(Yancich sent this to me in March 2016) Original document is configuration_and_build_procedures_for_lvisf_and_support_libraries.docx

Requirements

  1. Install cmake 
    sudo yum install cmake -y
  2. Install htop 
    sudo yum install htop -y
  3. Install jed 
    sudo yum install ftp://ftp.pbone.net/mirror/centos.karan.org/el5/extras/testing/i386/RPMS/jed-0.99.18-5.el5.kb.i386.rpm -y
  4. Install nano 
    sudo yum install nano -y
  5. Install p7zip and pigz
    sudo yum install p7zip pigz -y
  6. Install PCI utilities 
    sudo yum install pciutils -y
  7. Install screen 
    sudo yum install screen -y
  8. Install telnet 
    sudo yum install telnet -y
  9. Install wget 
    sudo yum install wget -y
  10. Install the development package 
    sudo yum groupinstall "Development Tools"
  11. Install development libraries for md5sum and gzip in real time 
    sudo yum install openssl-devel -y
  12. Install md5deep so we can check file integrity 
    sudo yum install md5deep -y
  13. Install man pages 
    sudo yum install man -y
sudo yum install man-pages -y
  14. Install kernel development source 
    cd
mkdir download
cd ~/download
wget http://vault.centos.org/6.5/os/x86_64/Packages/kernel-devel-2.6.32-431.el6.x86_64.rpm
sudo yum --nogpgcheck localinstall ~/download/kernel-devel-2.6.32-431.el6.x86_64.rpm -y

Code Base

  1. Create the repoistory home and check out the source code
    1. Create a repository home in /opt 
      sudo mkdir /opt/lvisf
    2. Set proper permissions
      sudo chown -R lvis:lvis /opt/lvisf
    3. [Optional] Uncompress our locally attached mount with snapshot (faster than network initial checkout)
      cd /
tar jxvf /media/LVIS-GH-2TB_WD209/lvisf_build/lvisf_sourcesnapshot_20160816_svn439.tar.bz2
      1. [Either] Check out he raw source code from scratch 
        cd /opt/lvisf
svn co https://svn.yancich.com:8443/svn/NASA/LVIS/trunk/ src
      2. [Or] Update it if you used the tar above 
        cd /opt/lvisf/src
svn update
    4. Enter the user home directory and create symbolic links
      cd /home/lvis
mkdir src
ln -s /opt/lvisf/src/* /home/lvis/src/
  2. Add the following lines to the .bashrc for the lvis user
    1. Edit the file 
      nano /home/lvis/.bash_profile
    2. Add these lines 
      # For SVN commit comment editor
export SVN_EDITOR=nano

# For the Innovative digitizer
export WD_BASEDIR=/home/lvis/src/Innovative/WinDriver

# For the SyncClock timer card
export PLX_SDK_DIR=/home/lvis/src/PLX/PlxSdk

# For the spectrum digitizer
export SSP_INSTALL_ROOT=/home/lvis/src/spectrum
  3. Edit the file 
    sudo nano /etc/ld.so.conf.d/lvisf.conf
    1. Add these lines 
      /home/lvis/src/Innovative/winCloudDrvr/winclouddrvr_installation/lib
/home/lvis/src/MIC3753/linux_driver_source_3.2.7.0_64bit/libs
/home/lvis/src/spectrum/shared/linux/pc64/lib
    2. Reload the library path 
      sudo ldconfig

SyncClock32 PLX Drivers

  1. Build all drivers
    1. Go to the source code home directory 
      cd /home/lvis/src/PLX/PlxSdk/Driver
    2. Execute the build script 
      ./buildalldrivers
  2. Build the samples
    1. Go to the source directory 
      cd /home/lvis/src/PLX/PlxSdk
    2. Make the programs 
      make
  3. Load the driver
    1. To the binary directory 
      cd /home/lvis/src/PLX/PlxSdk/Bin
    2. Execute the script for the 9030 card (our syncclock32) 
      sudo ./Plx_load 9030

# to just see what boards are supported, run the script with no argument
./Plx_load

MIC 3753 DIO Drivers

NOTE These drivers NEED to be built as root, you cannot sudo to build these drivers

  1. Become root all the time 
    sudo bash
  2. Go to the code base directory 
    cd /home/lvis/src/MIC3753/linux_driver_source_3.2.7.0_64bit/drivers/driver_base/src/lnx_ko
  3. Build the drivers 
    make
  4. Go into our specific card directory 
    cd /home/lvis/src/MIC3753/linux_driver_source_3.2.7.0_64bit/drivers/pci1753_mic3753_pcm3753i/src/lnx_ko
  5. Build the drivers 
    make
  6. Load the drivers 
    cd /home/lvis/src/MIC3753/linux_driver_source_3.2.7.0_64bit/drivers/bin
insmod biokernbase.ko
insmod bio1753.ko
  7. Exit the sudo bash 
    exit

Innovative Digitizer Drivers

Innovative OEM Drivers

  1. Make a directory for the Innovative code 
    sudo mkdir /usr/Innovative
  2. Copy base Innovative support software into /usr 
    sudo cp /home/lvis/src/INNO-RAW/* /usr/Innovative/
  3. Fix the permssions so we can execute this script 
    sudo chmod 755 /usr/Innovative/Setup.sh
  4. Create this link to the kernel source so the Innovative driver modules can build 
    sudo ln -s /usr/src/kernels/2.6.32-431.el6.x86_64 /usr/src/linux
  5. Move into and run the setup script 
    cd /usr/Innovative
sudo ./Setup.sh

Innovative Custom Drivers

  1. Build the wdapi support library
    1. Enter the code directory 
      cd /home/lvis/src/Innovative/WinDriver/src/wdapi
    2. Compile the library 
      make -C LINUX
    3. Create this symbolic link, but the SVN checkout already has it 
      ln -s /home/lvis/src/Innovative/WinDriver/src/wdapi/LINUX/libwdapi.so /home/lvis/src/Innovative/winCloudDrvr/winclouddrvr_installation/lib/libwdapi1180.so
  2. Build the winCloudDrvr
    1. Enter the source directory 
      cd /home/lvis/src/Innovative/winCloudDrvr
    2. Compile 
      make -C linux
  3. Build our custom driver
    1. Enter the directory 
      cd /home/lvis/src/Innovative/winCloudDrvr/winclouddrvr_installation/redist
    2. Configure and compile 
      ./configure --disable-usb-support
make
    3. Install 
      sudo make install

To load the driver:

  1. insmod our custom driver 
    sudo /opt/lvisf/src/Innovative/winCloudDrvr/winclouddrvr_installation/redist/wdreg winCloudDrvr auto

Spectrum Digitizer Drivers

  1. Create the symbolic link for /spectrum 
    sudo ln -s /opt/lvisf/src/spectrum /spectrum
  2. Enter the code directory 
    cd /home/lvis/src/spectrum/shared/linux/pc64/bin
  3. Copy the drivers for our kernel into the binary directory 
    cp -a /home/lvis/src/spectrum/shared/linux/pc64/bin/`uname -r`/*.ko /home/lvis/src/spectrum/shared/linux/pc64/bin/
  4. Execute the setup script 
    chmod 755 *.sh   # not sure why these were not already executable
sudo bash ./setup_xmc1151_dvt.sh
  5. Select the proper option: 1)Install

Auto-load MIC-3753 Driver

  1. symlink the drivers into the kernel directory 
    sudo ln -s /opt/lvisf/src/MIC3753/linux_driver_source_3.2.7.0_64bit/drivers/bin/*.ko /lib/modules/2.6.33.9-rt31.79.el6rt.x86_64/kernel/drivers/misc/
  2. add to our startup script /etc/sysconfig/modules/lvisf.modules
    1. modify the file 
      sudo nano /etc/sysconfig/modules/lvisf.modules
    2. add the following 
      # start the MIC-3753 drivers
/sbin/modprobe biokernbase
/sbin/modprobe bio1753

Auto-load Plx9030 Driver

NOTE: (in lieu of step 2 below) I had this not work when I manually edited it the first time. A copy of the file is in the repository, you could just copy that file in: 

sudo cp /opt/lvisf/src/lvisF/scripts/lvisf.modules /etc/sysconfig/modules/lvisf.modules
  1. symlink the driver into the kernel so it will come up on boot 
    sudo ln -s /opt/lvisf/src/PLX/PlxSdk/Driver/Source.Plx9000/Output/Plx9030.ko /lib/modules/2.6.33.9-rt31.79.el6rt.x86_64/kernel/drivers/misc/
  2. add to our startup script /etc/sysconfig/modules/lvisf.modules
    1. modify the file 
      sudo nano /etc/sysconfig/modules/lvisf.modules
    2. add the following 
      # start the Plx9030 syncclock32 driver
/sbin/modprobe Plx9030
  3. symbolically link in our rc.local into /etc/rc.local
    1. remove the original 
      # remove the symlink
sudo rm /etc/rc.local
# move the original to something else
sudo mv /etc/rc.d/rc.local /etc/rc.d/rc.local_orig
    2. link in the lvisf version 
      sudo ln -s /opt/lvisf/src/lvisF/scripts/rc.local /etc/rc.d/rc.local
sudo ln -s /etc/rc.d/rc.local /etc/rc.local

Clean Boot Operations

Load Drivers

  1. Load the MIC-3753 DIO Drivers 
    sudo insmod /home/lvis/src/MIC3753/linux_driver_source_3.2.7.0_64bit/drivers/bin/biokernbase.ko
sudo insmod /home/lvis/src/MIC3753/linux_driver_source_3.2.7.0_64bit/drivers/bin/bio1753.ko
  2. Load the SyncClock32 Timer Drivers 
    cd /home/lvis/src/PLX/PlxSdk/Bin
sudo ./Plx_load 9030

Compile Code

  1. Enter the build directory for lvisf 
    cd /home/lvis/src/lvisF/build
  2. Use cmake 
    cmake ../
  3. Build code 
    make

Run Tests

User Space Latency Test

  1. Enter the testing program 
    cd /home/lvis/src/lvisF/build/bin/tests/syncclock
  2. Run the latency program 
    sudo ./galvMove

Latency Tweaking

  • Set CPU affinity to CPU 3 with something like, made it much more consistent since I guess most things go for CPU 0 by default 
    CPU_SET(3, &cpus);
  • Change the scheduler policy, this information is displayed in the syncclock test program 
    sudo chrt --fifo 99 ./galvMove
  • Isolate a CPU, and then have the code attach itself to that cpu
    • In /etc/grub.conf add this command to the kernel command line, so all user space code will avoid CPU 2 and 3 in this example, leaving 0 and 1 for the OS
      isolcpus=2,3
    • Change the program such that 
      CPU_SET(3, &cpus);
    • Run the program with chrt or not 
      sudo chrt --fifo 99 ./galvMove
  • Set the timer card interrupt affinity to a single CPU (not the prime) 
    sudo bash -c 'echo 2 > /proc/irq/19/smp_affinity'
    • Using 2 here put the interrupt 19 servicing on CPU 1 exclusively
  • More low latency items to add to the kernel command line for /etc/grub.conf 
    rhgb nousb quiet isolcpus=2,3 nosoftlockup mce=ignore_ce audit=0
    • nosoftlockup disables backtrace functionality
    • mce=ignore_ce ignores corrected errors
    • audit=0 disables kernel components of the audit subsystem

Testing

  • Testing delays
    • Install perf 
      sudo yum install perf
    • Run this command to record some latency data
      cd /opt/lvisf/src/lvisF/build/bin/tests/syncclock
sudo perf sched record -o /dev/shm/perf.data chrt --fifo 99 ./galvMove
    • Run the following to read the data 
      sudo perf sched -i /dev/shm/perf.data latency > /tmp/perf.latency.report

Show Interrupt Status

  • This command shows interrupts for each core / CPU 
    cat /proc/interrupts
# notice that CPU1 has all the timer card interrupts (PLx9030)
[lvis@lvisf syncclock]$ cat /proc/interrupts
           CPU0       CPU1       CPU2       CPU3       
  0:        125          0          0          0  IR-IO-APIC-edge      timer
  8:          1          0          0          0  IR-IO-APIC-edge      rtc0
  9:          0          0          0          0  IR-IO-APIC-fasteoi   acpi
 18:       1968          0          0          0  IR-IO-APIC-fasteoi   eth2
 19:          0    2021327          0          0  IR-IO-APIC-fasteoi   Plx9030
 24:          0          0          0          0  DMAR_MSI-edge      dmar0
 25:          0          0          0          0  DMAR_MSI-edge      dmar1
 26:          2          0          0          0  IR-HPET_MSI-edge      hpet2
 27:          0          0          0          0  IR-HPET_MSI-edge      hpet3
 28:          0          0          0          0  IR-HPET_MSI-edge      hpet4
 29:          0          0          0          0  IR-HPET_MSI-edge      hpet5
 34:        235          0          0          0  IR-PCI-MSI-edge      i915
 35:          0          0          0          0  IR-PCI-MSI-edge      ahci
 36:       7971          0          0          0  IR-PCI-MSI-edge      ahci
NMI:          0          0          0          0   Non-maskable interrupts
LOC:      20569      29227      10924      50493   Local timer interrupts
SPU:          0          0          0          0   Spurious interrupts
PMI:          0          0          0          0   Performance monitoring interrupts
IWI:          0          0          0          0   IRQ work interrupts
RES:        324        194        372        353   Rescheduling interrupts
CAL:         47        197        178        211   Function call interrupts
TLB:        142        610        312          1   TLB shootdowns
TRM:          0          0          0          0   Thermal event interrupts
THR:          0          0          0          0   Threshold APIC interrupts
MCE:          0          0          0          0   Machine check exceptions
MCP:          1          1          1          1   Machine check polls
ERR:          0
MIS:          0

Test Results

  • 2016.04.27: Ran a test for 2.7 hours. We missed 46 shots out of 49097902 at 5khz (200 useconds) so as far as actually reacting to the interrupt, we are in good shape.
  • Time to make a build 1 data system and get better numbers as we do all our tasks.
code/work/lvisf/nonrt2017/start.1515092822.txt.gz · Last modified: by david