Idbool

From Digitalis

(Difference between revisions)
Jump to: navigation, search
(Created page with '{{Tabs}} ===== Overview ===== Idbool is a CC-NUMA SSI system of 192 cores using the [www.numascale.com Numascale] Numaconnect interconnect. Technically, the machine is composed...')
m
Line 1: Line 1:
{{Tabs}}
{{Tabs}}
===== Overview =====
===== Overview =====
-
Idbool is a CC-NUMA SSI system of 192 cores using the [www.numascale.com Numascale] Numaconnect interconnect.
+
Idbool is a CC-NUMA system of 192 cores using the [http://www.numascale.com Numascale] Numaconnect interconnect.
-
Technically, the machine is composed of 4 nodes, each equiped with 3 AMD Opteron(tm) Processor 6376 (Abu Dhabi) and interconnected to the other nodes using the Numaconnect interconnect in a tore configuration (double links).
+
Technically, the machine is composed of 4 nodes, each equiped with 3 AMD Opteron(tm) Processor 6376 (Abu Dhabi, 16 cores) and interconnected to the other nodes using the Numaconnect interconnect in a tore configuration with double links.
-
This Numaconnect interconnect provides a full hardware SSI. As a result the system appears as a single Linux system.
+
This Numaconnect interconnect provides a full hardware SSI, as a result the system appears as a single Linux system.
-
Currently the systems is powerd by a Ubuntu 14.04 LTS with
+
Currently the systems is powered by a Ubuntu 14.04 LTS.
-
===== Technical docs =====
+
===== Technical documentations and other resources =====
-
https://wiki.numascale.com/
+
* http://www.numascale.com/numa_support.html
 +
* https://resources.numascale.com/
 +
* https://wiki.numascale.com
===== Installation notes =====
===== Installation notes =====

Revision as of 21:51, 26 November 2014

| Introduction | Usage | Idfreeze | Idgraf | Idphix | Idbool | Idkat | Idcin | Idarm | Ppol | Grimage |
Overview

Idbool is a CC-NUMA system of 192 cores using the Numascale Numaconnect interconnect.

Technically, the machine is composed of 4 nodes, each equiped with 3 AMD Opteron(tm) Processor 6376 (Abu Dhabi, 16 cores) and interconnected to the other nodes using the Numaconnect interconnect in a tore configuration with double links.

This Numaconnect interconnect provides a full hardware SSI, as a result the system appears as a single Linux system.

Currently the systems is powered by a Ubuntu 14.04 LTS.

Technical documentations and other resources
Installation notes

Instruction to install the system with Ubuntu 14.04 LTS

  • Alter /etc/sysct.conf and kernel parameters (taken from the Numascale Wiki: https://wiki.numascale.com/tips/os-tips)
  • Apply the patch from http://askubuntu.com/questions/468466/why-this-occurs-error-diskfilter-writes-are-not-supported due to software raid
  • Remove irqbalance, suggested by Numascale
  • Disable selinux and apparmor in /etc/default/grub, after that update-grub. Also disabled apparmor startup script
  • Blacklist the edac drivers, because they caused and error during boot seen in dmesg ( /etc/modprobe.d/blacklist.conf )
    • Not recommended by NumaScale, therefore reverted the steps above again. The traces can be considered as warning
    • This is due to scalability in the kernel, which should be fixed with the NumScale provided kernel
  • Install the linux-image-3.15.10-numascale17+_3.15.10-numascale17+-2_amd64.deb patch:
    • Works perfectly, scales pretty good: but swap is not in the kernel, so no swap space is usable. But swapping on a Numasystem does not make sense at all, because this slows down even more than on a normal system
Personal tools
platforms