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Combined display of all available logs of HPCWIKI. You can narrow down the view by selecting a log type, the username (case-sensitive), or the affected page (also case-sensitive).

• 11:29, 3 June 2024 Admin talk contribs uploaded File:UALink pod.png
• 09:50, 31 May 2024 Admin talk contribs uploaded File:SDN timeline.png
• 09:50, 31 May 2024 Admin talk contribs created page File:SDN timeline.png
• 09:29, 31 May 2024 Admin talk contribs uploaded File:Type of SDN product .png
• 09:29, 31 May 2024 Admin talk contribs created page File:Type of SDN product .png
• 09:27, 31 May 2024 Admin talk contribs uploaded File:Type of SDN solutions.png
• 09:27, 31 May 2024 Admin talk contribs created page File:Type of SDN solutions.png
• 09:00, 31 May 2024 Admin talk contribs created page SDN (Created page with "== Software-defined networking (SDN) == SDN architecture) defines how a networking and computing system can be built using a combination of open software-based technologies and commodity networking hardware to supports dynamic programmable network configuration. SDN uses the controller for network device management, network service orchestration, and service traffic scheduling, which features low costs, centralized management, and flexible scheduling. The advantages...") Tag: Visual edit
• 08:46, 31 May 2024 Admin talk contribs uploaded File:Comparison between the traditional network architecture and SDN architecture.png
• 08:46, 31 May 2024 Admin talk contribs created page File:Comparison between the traditional network architecture and SDN architecture.png
• 12:06, 30 May 2024 Admin talk contribs moved page JS tims and tricks to JS tips and tricks
• 12:04, 30 May 2024 Admin talk contribs created page JS tims and tricks (Created page with " == Display JavaScript datetime in 12 hour AM/PM format<ref>https://stackoverflow.com/questions/8888491/how-do-you-display-javascript-datetime-in-12-hour-am-pm-format</ref> == <syntaxhighlight lang="javascript"> toLocaleTimeString() may behave differently based on region / location var time = new Date(); console.log( time.toLocaleString('en-US', { hour: 'numeric', minute: 'numeric', hour12: true }) ); </syntaxhighlight><code>toLocaleTimeString() may behave differently...") Tag: Visual edit
• 11:09, 30 May 2024 Admin talk contribs created page Timezone (Created page with " == Timezone set on Linux == Timezone tells your system where you are in the world depending on your exact location on this planet with GMT-/+<nowiki><time> format.</nowiki> On most Linux, <code>/etc/timezone</code> is a text-based representation of what timezone you are in. <code>/etc/localtime</code> is a binary representation of the exact rules for calculating the time relative to UNIX time by a symbolic link from <code>/etc/localtime</code> to a file in the <code...") Tag: Visual edit
• 10:22, 30 May 2024 Admin talk contribs created page Chrome remote debugging (Created page with "== Chrome remote debugging == To develop Webapp on target such as mobile or smart rack system solution RD/RIM by HPCMATE, we open need to access remote running Chrome browser from development host system remotely. cause developers are able to debug remotely running webapp instance on the target system through the Chrome remote debugging environment. == Setup remote debugging environment == {| class="wikitable" |+ !Where !What !Description |- | rowspan="2" |On target sy...") Tag: Visual edit
• 09:58, 28 May 2024 Admin talk contribs created page Network tips and tricks (Created page with "== ModuleNotFoundError: No module named 'netifaces' == <syntaxhighlight lang="bash"> #if you have pip installed pip install netifaces #on Ubuntu sudo apt install python3-netifaces </syntaxhighlight> == References == <references />") Tag: Visual edit
• 09:54, 28 May 2024 Admin talk contribs moved page Kernel log tips and trick to Kernel log tips and tricks
• 14:34, 25 May 2024 Admin talk contribs created page X11 tips and tricks (Created page with "== Get current display name == #see the capability of display :0 xrandr --current -display  :0 == Get input device list and properties == get stable video output names xrandr -q | grep connected get input devices $ DISPLAY=:0 xinput list $ DISPLAY=:0 xinput list-props 8 == References == <references />") Tag: Visual edit
• 13:58, 25 May 2024 Admin talk contribs created page Cmake tips and tricks (Created page with "== CMake x.yy or higher is required<ref>https://stackoverflow.com/questions/49859457/how-to-reinstall-the-latest-cmake-version</ref> == Install latest cmake using pip<syntaxhighlight lang="bash"> $apt remove cmake -y $pip install cmake --upgrade </syntaxhighlight> == References == <references />") Tag: Visual edit
• 10:32, 23 May 2024 Admin talk contribs created page Private:RIM (Created page with " == Rack display architecture == * RID : each rack has TFT LCD display device * RIM : Admin tool on special server to communicate multiple RID devices == References == <references />") Tag: Visual edit
• 16:05, 21 May 2024 Admin talk contribs created page Private:HMRIM (Created page with "== HM Rack Infrastructure Management == HM Rack infrastructure management has been designed for monitoring various data such as temperature, humidity and power usage in a rack. HMRIM communicate with sensors through Defog PDU. == HMRIM image == {| class="wikitable" |+ !Title !Description !Notes ! |- |firmware |Debian bullseye |depending on the Pi hardware | |- |Setup |rpi.yml |serversetup program | |- |customization |netplan |Use netplan.io instead of default DHCP | |...") Tag: Visual edit
• 16:03, 21 May 2024 Admin talk contribs created page Node.js tips and tricks (Created page with " == Install latest Node.js<ref>https://deb.nodesource.com/</ref> == <syntaxhighlight lang="bash"> #Install Node.js 20.x LTS $curl -fsSL https://deb.nodesource.com/setup_20.x | sudo bash - $sudo apt-get install -y nodejs </syntaxhighlight> == References == <references />") Tag: Visual edit
• 14:34, 21 May 2024 Admin talk contribs created page DSI (Created page with " DSI (Display Serial Interface) specifies a high-speed point-to-point serial bus that has a clock lane plus one to four data lanes. The DSI and D-PHY specifications are maintained by the MIPI Alliance == References == <references />") Tag: Visual edit
• 14:07, 21 May 2024 Admin talk contribs created page Private:Rpi (Created page with " == Etc == * sudo update-alternatives --config editor * rpi-update == Check configuration == >>> rpi config vcgencmd get_config int $ cat /proc/bus/input/devices == Blacklist == == Disable service list == $ sudo systemctl disable --now wpa_supplicant.service == Start app from ssh console == /etc/modprobe.d/raspi-blacklist.conf == X11 == >>> screen size $ DISPLAY=:0 xdpyinfo | grep dimensions dimensions: 800x480 pixels (211x127 millimeters) === X11 Debug =...") Tag: Visual edit
• 12:46, 9 May 2024 Admin talk contribs moved page Conda tips and tricks to Conda/Mamba tips and tricks
• 09:41, 8 May 2024 Admin talk contribs created page Iptables vs nftables (Created page with "== iptables vs [https://netfilter.org/ nftables]<ref>https://tuxcare.com/blog/iptables-vs-nftables-in-linux-what-is-the-difference/</ref> == iptables is a generic firewalling software that allows you to define rulesets. Each rule within an IP table consists of a number of classifiers (iptables matches) and one connected action (iptables target). iptables has been a core component of Linux firewall solutions, offering flexibility and robust control ove...") Tag: Visual edit
• 13:22, 6 May 2024 Admin talk contribs created page Nftables (Created page with " == netfilter (nftables) == nftables is the successor of iptables. The netfilter project enables packet filtering, network address [and port] translation (NA[P]T), packet logging, userspace packet queueing and other packet mangling. == monitoring netfilter == * nftwatch - https://github.com/flyingrhinonz/nftwatch == Referencs == <references />") Tag: Visual edit
• 12:41, 6 May 2024 Admin talk contribs created page BIOS/Global C-state Control (Created page with "== C-States<ref>http://hardwaresecrets.com/everything-you-need-to-know-about-the-cpu-c-states-power-saving-modes/</ref> == C-States are just a power saving feature and can be disabled in Bios. No negative effects (apart from a slight increase in power usage) and will not effect the lifespan of your CPU. They are numbered starting at C0, which is the normal CPU operating mode, i.e., the CPU is 100% turned on. The higher the C number is, the deeper is the CPU sleep mode,...") Tag: Visual edit
• 11:58, 6 May 2024 Admin talk contribs uploaded File:Warning.png
• 11:58, 6 May 2024 Admin talk contribs created page File:Warning.png
• 11:32, 6 May 2024 Admin talk contribs created page BIOS/SMT Control (Created page with " == AMD Simultaneous Multithreading (SMT) == {{Notes}} This option is available on servers with AMD processors.      == References == <references />") Tag: Visual edit
• 11:32, 6 May 2024 Admin talk contribs created page Template:Notes (Created page with "<nowiki><div class="note note"></nowiki> <nowiki><span style="font-weight:bold">NOTE: </span></nowiki> <nowiki><p class="p">This option is available on servers with AMD processors.   </p></nowiki> <nowiki></div></nowiki>") Tag: Visual edit
• 11:03, 6 May 2024 Admin talk contribs moved page HMVPN configuration to Private:HMVPN configuration (protection from external)
• 11:02, 6 May 2024 Admin talk contribs created page HMVPN configuration (Created page with " == References == <references />") Tag: Visual edit
• 10:54, 5 April 2024 Admin talk contribs created page Deep Learning Workflow (Created page with "== Deep Learning (DL) workflow == Both DL training and inference are computation-intensive in their own ways. On the training side, feeding a DNN large amounts of data is intensive for GPU computing, and it may require more or higher efficiency units. And minimizing latency issues during the inference process can pose a challenge for getting the system to make decisions in real time. '''Training and inference are usually completed on two separate systems, training of...") Tag: Visual edit
• 12:50, 30 March 2024 Admin talk contribs created page File:Carnot cycle.png
• 12:50, 30 March 2024 Admin talk contribs uploaded File:Carnot cycle.png
• 16:55, 29 March 2024 Admin talk contribs created page Heat exchanger (Created page with " A heat exchanger is a device used to transfer heat between two or more fluids. There are two approaches that are normally taken. The first considers the flow configuration within the heat exchanger, while the second is based on the classification of equipment type primarily by construction.<ref>https://www.thermopedia.com/content/832/</ref> == Classification of Heat Exchangers by Flow Configuration == There are four basic flow configurations: * Counter Flow * Cocurre...") Tag: Visual edit
• 10:51, 29 March 2024 Admin talk contribs uploaded File:Thermal resistance formula.png
• 10:51, 29 March 2024 Admin talk contribs created page File:Thermal resistance formula.png
• 10:12, 29 March 2024 Admin talk contribs uploaded File:Heat dissipation path.png
• 10:12, 29 March 2024 Admin talk contribs created page File:Heat dissipation path.png
• 10:05, 29 March 2024 Admin talk contribs moved page Thermal conductivity to Thermodynamics
• 09:55, 29 March 2024 Admin talk contribs created page Thermal conductivity (Created page with " == Thermal conductivity == Thermal conductivity is a fundamental concept in heat transfer and is crucial in multiple industries and scientific disciplines. It refers to the ability of a material to conduct heat or the rate at which heat transfers through a substance. Understanding heat and its relationship to thermal conductivity is essential for designing efficient thermal systems, optimizing energy usage, and ensuring the safety and performance of various materials an...") Tag: Visual edit
• 13:25, 22 March 2024 Admin talk contribs created page Manual:UCM/NIS (Created page with " == Master setup and config == == FAQ == === Can't communicate with ypbind (on master) === there should be no ypbind process on server so that ypcat command could not talk through it. * On Ubuntu 20.04, # Need to have ypbind process # YPBINDARGS=-no-dbus in /etc/default/nis caused that. It seems this option is no longer available and ypbind silently fails at startup instead of just ignoring it.<ref>https://www.marcus-povey.co.uk/2020/10/05/fixed-nis-not-working-aft...") Tag: Visual edit
• 17:17, 11 March 2024 Admin talk contribs created page Netcat (Created page with "== netcat (nc) == netcat (often abbreviated to nc) is ''a computer networking utility for reading from and writing to network connections'' using TCP or UDP<ref>https://en.wikipedia.org/wiki/Netcat</ref> == Send raw data over nc == <syntaxhighlight lang="bash"> echo -e -n '\x01\x03\x10\x00\x00\x01\x80\xCA' | nc 192.168.0.5 2000 -e allows the conversion of escaped chars -n prevents a newline character being appended </syntaxhighlight> == References ==") Tag: Visual edit
• 12:08, 11 March 2024 Admin talk contribs created page Well known ports (Created page with " == Well known UDP ports == This is a list of '''UDP port numbers''' used by protocols of the transport layer of the Internet protocol suite for the establishment of host-to-host connectivity. Port numbers are assigned in various ways, based on three ranges: System Ports (0-1023), User Ports (1024-49151), and the Dynamic and/or Private Ports (49152-65535). The full list of well known port numbers is available at [https://www.iana.org/assignments/service-names-port-numbe...") Tag: Visual edit
• 10:51, 7 March 2024 Admin talk contribs created page Could not install python logging library with raise NotImplementedError emit must be implemented (Created page with " == Problem == pip install logging return raise NotImplementedError emit must be implemented == Solution == According to the python docs (<nowiki>https://docs.python.org/3.9/library/logging.html#module-logging</nowiki>) logging is part of the standard Python3 library. You shouldn't need to install it with pip == References == <references />") Tag: Visual edit
• 13:38, 3 March 2024 Admin talk contribs created page X2APIC (Created page with " == xAPIC vs x2APIC == In xAPIC compatibility mode, APIC registers are accessed through memory mapped interface to a 4K-Byte page, identical to the xAPIC architecture. while In x2APIC mode<ref>https://courses.cs.washington.edu/courses/cse451/24wi/documentation/x2apic.pdf</ref>, APIC registers are accessed through Model Specific Register (MSR) interfaces. In this mode, the x2APIC architecture provides significantly increased processor addressability and some enhancements...") Tag: Visual edit
• 13:37, 3 March 2024 Admin talk contribs created page CPUs online or offline (Created page with " == Check CPU status == <syntaxhighlight lang="bash"> # get the list of offline CPUs cat /sys/devices/system/cpu/offline cat /sys/devices/system/cpu/online # get the list of online CPUs # get the list of CPUs ls -ld /sys/devices/system/cpu/cpu* # print individual CPU's online/offline status cat /sys/devices/system/cpu/cpu*/online # set online CPU <number> echo 1 > /sys/devices/system/cpu/cpu<number>/online or sudo chcpu -e <number> # set offline CPU <number> e...") Tag: Visual edit
• 10:55, 18 February 2024 Admin talk contribs created page Journalctl tips and tricks (Created page with "{| class="wikitable" |+ !Type !Description !Example !Notes |- |boot log |To see the boots that <code>journald</code> knows about |<code>journalctl --list-boots</code> | |- |enable persistent boot information | |<code>sudo mkdir -p /var/log/journal</code><code>sudo vi /etc/systemd/journald.conf</code>add, <code>. . .</code> <code>[Journal]</code><code>Storage=<mark>persistent</mark></code> | |- |Time Windows | |<code>journalctl --since "YYYY-MM-DD HH:MM:SS</code> <code>"...") Tag: Visual edit