|Model||IBM 3950 M2|
|Last updated||24 May 2021 22:02:24|
Borg is a virtual host server to be used to give members access to virtual machines in the space and ultimately replace many if not all the functions of Babbage.
They're currently labeled as BORG1 through BORG6 from bottom to top.
Currently connected to the SPC1601 PDU, we need a better way of adding accounts.
IBM 3950 M2
- 16 cores total
- 4 x Xeon 7330: 4 cores @ 2.4 GHz "Tigerton" Intel Ark spec sheet
- 128 GB ram
- BORG1 - 3 CPUs, 8GB RAM
- BORG2 - 3 CPUs, 8GB RAM
- BORG3 - 4 CPUs, 128GB RAM
- BORG4 - 4 CPUs, 128GB RAM
- BORG5 - 4 CPUs, 128GB RAM
- BORG6 - 3 CPUs, 128GB RAM
In order to link upto 4 borgs together we need to use the special cables. http://www.redbooks.ibm.com/redbooks/pdfs/sg247630.pdf - page 235 shows how this is done to create an SMP style set of nodes.
- Needs the non-free bnx2 firmware on a flash drive for the install to work, (could try to add it to the install initrd)
- Something something IBM Calgary IOMMU something something leads to DMA errors and the LSI MegaRaid raid card dosn't work, booting with "iommu=soft" makes it work but may not be ideal. search https://www.kernel.org/doc/Documentation/x86/x86_64/boot-options.txt for iommu
- The incantation seems to be: iommu=soft,calgary megaraid_sas.msix_disable=1
Upgrading the bios
Do a diskless boot, the go do Debian and then "Jessie amd64 Diskless for BORGs", log in as root (password 'root', this diskless setup is for testing only!), then:
cd ibm-bios/z/ ./lflash64
This is an upgrade to bios version 1.16
good megaraid cli guide:
It is reasonable to say the birth of Borg has been long and difficult, concern has generally revolved around the 3 areas:
- Energy Consumption
Each have been discussed on the mailing list but for summary.
Borg (being a server) could add substantially to our electricity costs. To help this we can offset some of it by the retiring of other machines in the space. It has also been agreed that if it takes up more than 275W regularly then a decision about Borgs future will have to be made. If it goes over 300W we will have to re-think our strategy. These figures are a maximum and equate to about £27 per month in electricity costs. The power consumption will be regularly measured and anyone is welcome to report power consumption levels.
The Rack in the basement.
- Rendering video and 3D
- Bio-informatics number crunching (bio-hackers?)
- realtime ray-tracing
Please keep this list up to date of virtual machines on Borg. If a machine is created but is not in this list it is liable to be switched off without warning.
|ExampleMachine||For displaying an example item in this table. Please be descriptive.||Cotten Eye Joe|