The Nvidia CUDA development kit has been updated to version 4.1.
DAS-4/ASTRON has succesfully correlated three hours of data coming from 288 LOFAR antennas, possibly setting a world record.
The GPU page documents how the OpenCL implementations on DAS-4 can be used.
DAS-4/VU achieved the 16th place on the Graph500 list. A very good result, as all higher-ranked systems are significantly bigger.
DAS-4 supports the OpenNebula package for Cloud computing.
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 |
| node027 + node028 | 6/4 + 6/5 |
| node025 + node026 | 6/6 + 6/7 |
| node023 + node024 | 6/8 + 6/9 |
| 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 |
| node047 + node048 | 9/4 + 9/5 |
| node045 + node046 | 9/6 + 9/7 |
| node043 + node044 | 9/8 + 9/9 |
| 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 |
| node067 + node068 | 12/4 + 12/5 |
| node065 + node066 | 12/6 + 12/7 |
| node063 + node064 | 12/8 + 12/9 |
| node074 | 13/1 + 13/2 |
| node073 | 13/3 + 13/4 |
| node071 + node072 | 13/6 + 13/7 |
| node069 + node070 | 13/8 + 13/9 |
| node061 + node062 | 14/2 + 14/3 |
| node059 + node060 | 14/4 + 14/5 |
| node057 + node058 | 14/6 + 14/7 |
| node055 + node056 | 14/8 + 14/9 |
The PDU gateway pdugw01 is at IP address 10.148.5.252. The equipment to PDU/port mapping is as follows:
| fs5 | 1/2 + UPS |
| node501 + node502 | 5/2 |
| node503 + node504 | 5/4 |
| node505 + node506 | 1/4 |
| node507 + node508 | 1/6 |
| node509 + node510 | 1/8 |
| node511 + node512 | 5/8 |
| node513 + node514 | 3/1 |
| node515 + node516 | 3/3 |
| node517 + node518 | 3/5 |
| node519 + node520 | 3/7 |
| node521 | 2/3 |
| node522 | 2/2 |
| b7015 | 4/1 + 4/2 + 4/3 (easier to read input of PDU 4) |
| r815 | 5/7 |
| ext. RAID r815 | 2/8 + 2/9 |
| InfiniBand switch | 5/9 |
| Ethernet switch | 3/9 |
| Schleifenbauer GateWay | 1/1 |