ABINIT Discussion Forums

Dear Abinit developers/user,
I'm using Abinit on an Intel dual core system from some months. Now my institution can buy a 48 core cluster for heavier calculations
I'm not expert about the hardware requirements and benchmarks so I'd like to have some information.

1) Intel vs AMD: are there benchmarks showing that one is better than another?
2) Disk requirements for temporary files: on a 4 core node, 100 Gb of disk space is enough?
3) Memory requirements: on the same 4 core node, 16 Gb of RAM is enough?

Thanks a lot in advance and best regards,
Mauro Sgroi.

Hello,

you can see the benchmarks for some abinit versions on

http://www.abinit.org/documentation/ben ... benchmarks

2 x Xeon Quad 3Ghz ( nehalem ) with 12 GB + 2 x 400 GB SAS drive : 5 KEuros... is a good choice for node
for cluster , the interconnect ( network ) is the bottleneck : infiniband is good but it's 50% of budget...

drive : it's not a problem 1TB ~ 150 Euros...
memory : more is best ! it depends of your problem

my 50 cents...

regards

jmb

Dear jbeuken,
thanks a lot for the information!
I was thinking also to a cluster with diskless nodes.
Probably I will have to convince my department about the infiniband connection..
Best regards,
Mauro.