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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).

• 13:55, 19 January 2024 Admin talk contribs created page File:Chip load table.png
• 13:55, 19 January 2024 Admin talk contribs uploaded File:Chip load table.png
• 13:53, 19 January 2024 Admin talk contribs created page File:Chip load.png
• 13:53, 19 January 2024 Admin talk contribs uploaded File:Chip load.png
• 13:51, 19 January 2024 Admin talk contribs created page File:Feedandspeed.png
• 13:51, 19 January 2024 Admin talk contribs uploaded File:Feedandspeed.png
• 05:15, 18 January 2024 Admin talk contribs created page Manual:DLSSystem/memory test (Created page with " Random Access Memory (RAM) is a crucial component of any computer system while having faulty or slow RAM can cause significant issues.<ref>https://medium.com/@dmitvas/testing-ram-random-access-memory-on-ubuntu-22-04-61517b2ca9e5</ref><syntaxhighlight lang="bash"> #Check the Installed free -m #Check the Type and Speed of RAM dmidecode -t memory | grep -A10 -i locator #Check memory serial number dmidecode -t memory | grep -A10 -i locator | grep -i serial.number #Ch...") Tag: Visual edit
• 15:34, 11 January 2024 Admin talk contribs created page LVM (Created page with "LVM(Logical volume management) creates an easy to use layer over multiple physical disks. We can combine multiple disks and create logical storage volumes. LVM features are<ref>https://www.cyberciti.biz/faq/howto-add-disk-to-lvm-volume-on-linux-to-increase-size-of-pool/</ref> # No restriction on disk size # Increased disk throughput # Mirroring volumes for business critical data # Volume snapshots # Easy backups and restores using snapshots # Easy data relocation # Re...") Tag: Visual edit
• 12:00, 11 January 2024 Admin talk contribs created page Linux package manager (Created page with " A package manager is a tool that allows users to install, remove, upgrade, configure and manage software packages on an operating system. == Package manager by distributor == {| class="wikitable" !'''Package Name''' !'''Binary /Source''' !'''Install from URL support''' !'''GUI enabled''' !Distributor !extension |- |'''APT''' |Binary |No |Yes |Debian-based Linux |'''dpkg,''' '''.deb extension''' |- |'''DNF''' |Binary |Yes |Yes |'''RedHat-based Linux''' |'''.rpm''' e...") Tag: Visual edit
• 16:44, 7 January 2024 Admin talk contribs created page File:LSA web gui.png
• 16:44, 7 January 2024 Admin talk contribs uploaded File:LSA web gui.png
• 15:01, 7 January 2024 Admin talk contribs created page File:Lsi hw healthcheck.png
• 15:01, 7 January 2024 Admin talk contribs uploaded File:Lsi hw healthcheck.png
• 07:42, 5 January 2024 Admin talk contribs deleted page File:Cable connector pinout2.png (Deleted old revision 20240104224138!Cable_connector_pinout2.png)
• 07:41, 5 January 2024 Admin talk contribs uploaded a new version of File:Cable connector pinout2.png
• 16:38, 4 January 2024 Admin talk contribs created page File:NVMe roadmap.png
• 16:38, 4 January 2024 Admin talk contribs uploaded File:NVMe roadmap.png
• 16:02, 4 January 2024 Admin talk contribs created page User management (Created page with " == Add user with specific uid and guid without home == sudo useradd -M -uxxxx -gyyyy aaa == References == <references />") Tag: Visual edit
• 14:01, 4 January 2024 Admin talk contribs created page File:Linux extended acl.png
• 14:01, 4 January 2024 Admin talk contribs uploaded File:Linux extended acl.png
• 13:51, 4 January 2024 Admin talk contribs created page File:Linux regular permission.png
• 13:51, 4 January 2024 Admin talk contribs uploaded File:Linux regular permission.png
• 13:46, 4 January 2024 Admin talk contribs created page Manual:SS System/Snapshot (Created page with "= ZFS Snapshot = The best part of ZFS would be its ability to perform snapshots. Snapshots are '''point-in-time''', '''read-only''' versions of the filesystem. T'''o make the snapshot data writeable you have to ZFS clone it'''. Snapshots can happen at any time of day and can be stored as long as you have enough space in the zpool and restore data from a Point-In-Time, Instantly. Some usage scenarios with ZFS Snapshots 1.     '''File system snapshots and rolling ba...") Tag: Visual edit
• 13:30, 4 January 2024 Admin talk contribs created page Manual:SS System/NFS (Created page with " == NFS on SS System == By default, ZFS supports integrated NFS v3. However, NFSv2/3 handles permissions solely based on UID and GID. File permissions on the server are matched against user- and group ids on client. '''That is why NFSv<4 is by design insecure''' in environments where users have root access to the client machines; UID spoofing is trivial in that case. NFS shares are exported by default with the option <code>root_squash</code>, which will map all client r...") Tag: Visual edit
• 13:20, 4 January 2024 Admin talk contribs created page File:Nfs connection verify on window.png
• 13:20, 4 January 2024 Admin talk contribs uploaded File:Nfs connection verify on window.png
• 13:19, 4 January 2024 Admin talk contribs created page File:NFS mount on window.png
• 13:19, 4 January 2024 Admin talk contribs uploaded File:NFS mount on window.png
• 13:17, 4 January 2024 Admin talk contribs created page File:Check nfs mount status on window.png
• 13:17, 4 January 2024 Admin talk contribs uploaded File:Check nfs mount status on window.png
• 13:16, 4 January 2024 Admin talk contribs created page File:Nfs on window.png
• 13:16, 4 January 2024 Admin talk contribs uploaded File:Nfs on window.png
• 13:12, 4 January 2024 Admin talk contribs created page File:Smb disconnect on window.png
• 13:12, 4 January 2024 Admin talk contribs uploaded File:Smb disconnect on window.png
• 13:03, 4 January 2024 Admin talk contribs created page Manual:SS System/Storage Pool Sharing (Created page with " ==Sharing pool== ===ZFS shared list (NFS/SMB)=== To distinguish native NFS share, ZFS share uses '''/etc/dfs/sharetab''' file for SMB and NFS share automatically. ===List all shared information=== Administrator can show all the list of dataset that has been shared by using following command<syntaxhighlight lang="bash"> $ zfs list -r -o name,sharenfs,sharesmb,mountpoint NAME      SHARENFS                               SHARESMB  MOUNTPOINT zssd    ...") Tag: Visual edit
• 12:47, 4 January 2024 Admin talk contribs created page Manual:SS System/Storage Pool (Created page with " ==Hot Spare automatic replacement== One of the key features of ZFS is detect failed hard disk and replace it with healthy spare drive automatically. The '''hot spare device''' means that the device(s) is not a part of active device in a pool, but if one of active device in the pool fails, the hot spare device(s) will replaces the failed device automatically. ===Add/Remove spare drive=== <syntaxhighlight lang="bash"> Add new hard drive(s) into storage pool #zpool add zss...") Tag: Visual edit
• 12:39, 4 January 2024 Admin talk contribs created page Manual:SS System/Network (Created page with " ==Network MTU size== To maximize data transfer throughput, zstorage has been set up with the largest MTU size (9000) so called as jumbo frame instead of general 1500. Overall data transaction speed would be enough with connect to a proper enterprise performance of 10G network switch.") Tag: Visual edit
• 12:37, 4 January 2024 Admin talk contribs created page Manual:SS System/Diskinfo (Created page with " == Disks in zstoreage (default Head + JBOD mode) == $ lsblk --scsi -o name,model,serial == Head LOG and Cache Configuration == Head node has two M.2 NVMe disk. The default zstorage has been configured one for OS (Samsung 970 EVO Plus 1TB) the other for ZFS Cache/LOG using device (Intel Optane 1TB). The Intel Optane parted with four partitions as 25% (238.5GB) of 1TB and plan to use LOG for zssd and zsas as well as cache for zssd and zsas. nvme1n1     259:0   ...") Tag: Visual edit
• 12:20, 4 January 2024 Admin talk contribs created page Manual:SS System (Created page with "== HPCMATE SS (Scalable Storage) System Manual == To provide scalable storage solution that can be tunable for various workload of storage, HPCMATE provides the best practice of ZFS environment storage system. This page describes how to apply pre-installed software and how to maintain the system. Like DLS system, all SS system based on HPCMATE system level optimized Ubuntu. == Type of SS system == Scalable storage system can be configured many combination. HPCMATE pr...") Tag: Visual edit
• 14:13, 3 January 2024 Admin talk contribs created page Private:DLS tuning (Created page with " == DLS network tuning == https://enterprise-support.nvidia.com/s/article/linux-sysctl-tuning <syntaxhighlight lang="bash"> #Increase number of connection net.core.somaxconn=2048 #Disable the TCP timestamps option for better CPU utilization: net.ipv4.tcp_timestamps=0 #Increase the maximum length of processor input queues: net.core.netdev_max_backlog=250000 #Enable the TCP selective acks option for better throughput: net.ipv4.tcp_sack=1 #how much of the socket buffer...") Tag: Visual edit
• 12:50, 3 January 2024 Admin talk contribs created page Vmstat (Created page with "The '''<code>vmstat</code>''' (virtual memory statistics) is a built-in monitoring utility in Linux. <ref>https://phoenixnap.com/kb/vmstat-command</ref> The command is used to obtain information about memory, system processes, paging, interrupts, block I/O, disk, and CPU scheduling. Users can observe system activity virtually in real-time by specifying a sampling period. == Output meaning == <syntaxhighlight lang="bash"> $ vmstat -n 1 procs -----------memory----------...") Tag: Visual edit
• 12:36, 3 January 2024 Admin talk contribs created page Linux kernel parameter (Created page with "== net.core.somaxconn == somaxconn is used to set the maximum number of connections that can be queued for a socket. This parameter is used to prevent a flood of connection requests from overwhelming the system. The maximum value for the <code>net.core.somaxconn</code> parameter depends on the system and kernel version. The default value for the <code>net.core.somaxconn</code> Linux kernel parameter is typically 128 and the maximum value is around 65535 on most systems...") Tag: Visual edit
• 12:28, 3 January 2024 Admin talk contribs moved page Kernel kernel param to Kernel boot param over redirect
• 12:28, 3 January 2024 Admin talk contribs deleted redirect Kernel boot param by overwriting (Deleted to make way for move from "Kernel kernel param")
• 09:33, 3 January 2024 Admin talk contribs created page File:InfiniBand Vs. RoCEv2.png
• 09:33, 3 January 2024 Admin talk contribs uploaded File:InfiniBand Vs. RoCEv2.png
• 09:01, 3 January 2024 Admin talk contribs created page File:RDMA FLOW.png
• 09:01, 3 January 2024 Admin talk contribs uploaded File:RDMA FLOW.png
• 08:48, 3 January 2024 Admin talk contribs moved page Verify that RDMA is working to RDMA
• 12:42, 2 January 2024 Admin talk contribs created page NFSv4 ACLs (Created page with "NFSv4 ACLs (Access Control Lists) are mechanism to manipulate access controls on network-mounted filesystems to supplement traditional Unix permissions.<ref>https://www.osc.edu/book/export/html/4523</ref> == Commands == {| class="wikitable" |+ ! ! ! |- |<code>nfs4_setfacl</code> |to add, remove, or modify the <abbr>ACL</abbr> | * <code>-a</code> – to '''add''' the specified Access Control Entry (ACE - defined below). Basically, this adds a new rule. * <code>-x</code>...") Tag: Visual edit