DAS-4/VU and DAS-4/Delft have been decommisioned. The role of fs0.das4.cs.vu.nl for password updates has been taken over by fs4.das4.science.uva.nl. For access to old data on DAS-4/VU or DAS-4/Delft, mail das-account@cs.vu.nl.
OpenNebula on DAS-4/VU and DAS-4/Delft has been updated to version 5.4.6.
The DAS-4 clusters have been updated to CentOS 7, and the Nvidia CUDA development kit has been updated to version 8.0 (version 9.1 is also available for recent GPUs). This update makes DAS-4 software-compatible with DAS-5.
DAS-5 is now fully operational! To make room for DAS-5, DAS-4/UvA and DAS-4/ASTRON have been decomissioned, only their headnodes remain available.
Some of the DAS-4 sites have special Schleifenbauer Power Distribution Units that can supply various power-related metrics about local cluster equipment. This information is used in the context of research on Green HPC Cloud Computing.
The PDU gateway pdugw01 is at IP address 10.148.0.252. The equipment to PDU/port mapping is as follows:
| Ethernet switch A | 1/1 |
| Ethernet switch B | 1/3 |
| fs0 | 1/7 + 2/2 |
| PDU gateway | 1/9 |
| router01 | 2/3 + 2/4 |
| node075 | 2/7 + 2/8 + 2/9 |
| node076 | 3/1 + 3/4 |
| node013 + node014 | 3/5 |
| node011 + node012 | 3/6 + 3/7 |
| node009 + node010 | 3/8 + 3/9 |
| node007 + node008 | 4/2 + 4/3 |
| node005 + node006 | 4/4 + 4/5 |
| node003 + node004 | 4/6 + 4/7 |
| node001 + node002 | 4/8 + 4/9 |
| KVM | 5/1 |
| InfiniBand switch 2 | 5/2 |
| InfiniBand switch 3 | 5/3 |
| InfiniBand switch 4 | 5/4 |
| InfiniBand switch 5 | 5/5 |
| TFT | 5/6 |
| InfiniBand switch 1 | 5/8 |
| InfiniBand switch 2 | 5/9 |
| node033 + node034 | 7/4 + 7/5 |
| node031 + node032 | 7/6 + 7/7 |
| node029 + node030 | 7/8 + 7/9 |
| node021 + node022 | 8/2 + 8/3 |
| node019 + node020 | 8/4 + 8/5 |
| node017 + node018 | 8/6 + 8/7 |
| node015 + node016 | 8/8 + 8/9 |
| node053 + node054 | 10/4 + 10/5 |
| node051 + node052 | 10/6 + 10/7 |
| node049 + node050 | 10/8 + 10/9 |
| node041 + node042 | 11/2 + 11/3 |
| node039 + node040 | 11/4 + 11/5 |
| node037 + node038 | 11/6 + 11/7 |
| node035 + node036 | 11/8 + 11/9 |
| node074 | 13/1 + 13/2 |
| node073 | 13/3 + 13/4 |
| node071 + node072 | 13/6 + 13/7 |
| node069 + node070 | 13/8 + 13/9 |
A number of nodes are now powered via Racktivity PDU's as follows:
| node061 + node062 | rpdu01: 1 + 2 |
| node059 + node060 | rpdu01: 3 + 4 |
| node057 + node058 | rpdu01: 5 + 6 |
| node055 + node056 | rpdu01: 7 + 8 |
| node067 + node068 | rpdu02: 3 + 4 |
| node063 + node064 | rpdu02: 5 + 6 |
| node065 + node066 | rpdu02: 7 + 8 |
| node077 | rpdu03: 1 + 2 |
| node047 + node048 | rpdu03: 3 + 4 |
| node045 + node046 | rpdu03: 5 + 6 |
| node043 + node044 | rpdu03: 7 + 8 |
| node027 + node028 | rpdu04: 3 + 4 |
| node025 + node026 | rpdu04: 5 + 6 |
| node023 + node024 | rpdu04: 7 + 8 |
| node082 | rpdu05: 1 |
| node083 | rpdu05: 2 |
| node084 | rpdu05: 3 |
| node085 | rpdu05: 4 |
| node090 | rpdu05: 5 |
| node091 | rpdu05: 6 |
| node092 | rpdu05: 7 |
| node093 | rpdu05: 8 |
| node079 | rpdu06: 1 |
| node078 | rpdu06: 2 |
| node080 | rpdu06: 3 |
| node081 | rpdu06: 4 |
| node086 | rpdu06: 5 |
| node087 | rpdu06: 6 |
| node088 | rpdu06: 7 |
| node089 | rpdu06: 8 |
The PDU gateway pdugw01 is at IP address 10.148.5.252. The equipment to PDU/port mapping is as follows:
| Schleifenbauer GateWay | 1/1 |
| fs5 | 1/2 + UPS |
| node505 + node506 | 1/4 |
| node507 + node508 | 1/6 |
| node509 + node510 | 1/8 |
| node522 | 2/2 |
| node521 | 2/3 |
| ext. RAID r815 | 2/8 + 2/9 |
| node513 + node514 | 3/1 |
| node515 + node516 | 3/3 |
| node517 + node518 | 3/5 |
| node519 + node520 | 3/7 |
| Ethernet switch | 3/9 |
| b7015 | 4/1 + 4/2 + 4/3 (easier to read input of PDU 4) |
| node501 + node502 | 5/2 |
| node503 + node504 | 5/4 |
| r815 | 5/7 |
| node511 + node512 | 5/8 |
| InfiniBand switch | 5/9 |