Differences

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--- spo600:spo600_servers [2024/10/17 12:19] – [x86_64] chris
+++ spo600:spo600_servers [2025/03/21 05:06] (current) – chris
@@ Line 1: / Line 1: @@
 ======  SPO600 Servers  ======
+===== SERVER CHANGES =====
+;;;As of 2025-03-20:;;;
+  - The servers must be accessed with new SSH port numbers. See details below.
+  - An additional terabyte of storage has been added to the aarch64-002 server, accessible via ''~/aux'' -- See details below.
+  - An additional 500 GiB of storage has been added to the home directories on the x86-001 server.
 =====  Preparatory Steps  =====
@@ Line 13: / Line 19: @@
 ====  AArch64  ====
-=== aarch64-001 ===
+<!--=== aarch64-001 ===
-This ARMv8 / AArch64 machine is an Amazon Graviton 2 cloud system.
+This ARMv8 / AArch64 machine is an Amazon EC2 Graviton 2 cloud system.
-**Important: This machine does not currently have sufficient RAM or disk space to compile the GCC compiler. **
+**Critical: This machine does not currently have sufficient RAM or disk space to compile the GCC compiler. Attempting a build will exhaust memory and cause the host to crash.** Please __do not__ attempt to build GCC on aarch64-001.
 You can access this system at the hostname aarch64-001.spo600.cdot.systems; using OpenSSH from the command line, you can use these arguments:
 ''ssh //username//@aarch64-001.spo600.cdot.systems''
+-->
 === aarch64-002 ===
-**This computer is expected to be online by October 18**
+This machine is a Honeycomb LX2K system. It has a large number of moderate cores (16 x Cortex-A72), an NVME SSD storage system, and 32GiB RAM. Note that it is running an older version of both Linux and the GCC compiler. This system is capable of compiling GCC in about 100 minutes.
-This machine is a Honeycomb LX2K system in the K building at Newnham campus. It has a large number of wimpy cores (16 x Cortex-A72), an NVME SSD storage system, and 32GiB RAM.
+You can access this system at the hostname aarch64-002.spo600.cdot.systems at port 2202; using OpenSSH from the command line, you can use these arguments:
-You can access this system at the hostname aarch64-002.spo600.cdot.systems; using OpenSSH from the command line, you can use these arguments:
+''ssh ;;;-p 2202;;; //username//@aarch64-002.spo600.cdot.systems''
-''ssh //username//@aarch64-002.spo600.cdot.systems''
+;;;On **March 20, 2025**, an additional terabyte of storage was added to this system. The additional storage is available through the symlink ''~/aux'' in each user's directory. To be fair to other users, please limit your use of this additional storage to 30 GiB.;;;
+;;;You can see your current disk usage and available space in both your home and aux directories with the command: ''storage'';;;
+<!--
+=== aarch64-003 ===
+This ARMv8 / AArch64 machine is an Amazon EC2 Graviton 4 cloud system with SVE2 capability, 4 cores, and 16 GiB RAM. This machine has sufficient resources to compile the GCC compiler in about 84 minutes.
+You can access this system at the hostname aarch64-003.spo600.cdot.systems; using OpenSSH from the command line, you can use these arguments:
+''ssh //username//@aarch64-003.spo600.cdot.systems''
+-->
 ====  x86_64  ====
 === x86_64-001 ===
-This x86_64 system is a workstation/server class system (x86-64-v4 architectural level) with 64GiB RAM. It has the hostname x86-001.spo600.cdot.systems. It can be accessed using OpenSSH with these arguments:
+This x86_64 system is a workstation/server class system (x86-64-v4 architectural level) with 64GiB RAM. It has the hostname x86-001.spo600.cdot.systems and is accessible on port 2201. It can be accessed using OpenSSH with these arguments:
-''ssh //username//@x86-001.spo600.cdot.systems''
+''ssh ;;;-p 2201;;; //username//@x86-001.spo600.cdot.systems''
 =====  Simplified SSH Access  =====
@@ Line 46: / Line 63: @@
 If you're using OpenSSH (the ssh client used on most Linux systems and other platforms), you can simplify ssh command lines by placing host connection details in the file ''~/.ssh/config''>, something like this:
 <code>
- Host "aa1"
-         hostname "aarch64-001.spo600.cdot.systems"
-         user "YourUserID"
  Host "aa2"
          hostname "aarch64-002.spo600.cdot.systems"
+         port 2202
          user "YourUserID"
  Host "x86"
          hostname "x86-001.spo600.cdot.systems"
+         port 2201
          user "YourUserID"</code>
@@ Line 62: / Line 77: @@
 <code>
- ssh aa1
  ssh aa2
@@ Line 74: / Line 87: @@
 Remember that these machines are multi-user systems. Use the ''w'' or ''who'' commands to see who else is using them; you can also try using the ''write'' command to communicate with another user if required.
 =====  Passwords  =====
-Your password on each of these systems has been set to a random string (different on each host). You can find out the original random password by viewing the file ''~/password.txt'' and you can change the password with the ''passwd'' command. Your password is used for sudo access (see the next section).
+Your password on each of these systems has been set to a random string (different on each host). You can find out the original random password by viewing the file ''~/password.txt'' and you can change the password with the ''passwd'' command. <!--Your password is used for sudo access (see the next section).-->
+<!--
 =====  Sudo Access  =====
@@ Line 92: / Line 105: @@
 In order to use ''sudo'', you will need to know your password. An initial random password is provided in the file ''~/password.txt'' (note that your password will be different on each server). Feel free to change this with the ''passwd'' command -- not by editing the file, which is provided only for your information!
+-->
 =====  SSH Access from Other Client Systems  =====