jd e ([info]jkndrkn) wrote,
@ 2008-02-20 19:44:00
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Current music:Nine Inch Nails - In This Twilight

Hell Yeah
This a machine I get to play with:

marvel:~> uname -a
Linux marvel 2.6.15-51-amd64-server #1 SMP Thu Dec 6 20:43:50 UTC 2007 x86_64 GNU/Linux

marvel:~> cat /proc/cpuinfo | grep "processor\|model name"
processor       : 0
model name      : Dual Core AMD Opteron(tm) Processor 880
processor       : 1
model name      : Dual Core AMD Opteron(tm) Processor 880
processor       : 2
model name      : Dual Core AMD Opteron(tm) Processor 880
processor       : 3
model name      : Dual Core AMD Opteron(tm) Processor 880
processor       : 4
model name      : Dual Core AMD Opteron(tm) Processor 880
processor       : 5
model name      : Dual Core AMD Opteron(tm) Processor 880
processor       : 6
model name      : Dual Core AMD Opteron(tm) Processor 880
processor       : 7
model name      : Dual Core AMD Opteron(tm) Processor 880
processor       : 8
model name      : Dual Core AMD Opteron(tm) Processor 880
processor       : 9
model name      : Dual Core AMD Opteron(tm) Processor 880
processor       : 10
model name      : Dual Core AMD Opteron(tm) Processor 880
processor       : 11
model name      : Dual Core AMD Opteron(tm) Processor 880
processor       : 12
model name      : Dual Core AMD Opteron(tm) Processor 880
processor       : 13
model name      : Dual Core AMD Opteron(tm) Processor 880
processor       : 14
model name      : Dual Core AMD Opteron(tm) Processor 880
processor       : 15
model name      : Dual Core AMD Opteron(tm) Processor 880

marvel:~> free -m
             total       used       free     shared    buffers     cached
Mem:         31443       1643      29799          0        376        620
-/+ buffers/cache:        647      30796
Swap:        19045          0      19045


My job will be to see if I can get Erlang to make good use of those sixteen processor cores and 32GB of RAM. Now I remember why exactly it was that I doomed myself to three more years of school ^_^


(10 comments) - (Post a new comment)


[info]lostcrumpet
2008-02-21 12:54 am UTC (link)
i thought it was so that you could have the money to meet my puppy needs?

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[info]jkndrkn
2008-02-21 12:56 am UTC (link)
Yes, that is an unfortunate side-effect of post baccalaureate education ;]

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[info]jayp39
2008-02-21 06:24 am UTC (link)
32MB? That is the strangest configuration I have ever seen.

Today at Grooveshark we got a 24TB server. Yes, TB. 48 500MB drives tightly packed into a 4U server.

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[info]jkndrkn
2008-02-21 02:36 pm UTC (link)
32GB RAM, I mean ^_^

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[info]jayp39
2008-02-21 11:03 pm UTC (link)
Ah, that's a bit more sane :)

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[info]jkndrkn
2008-02-21 02:37 pm UTC (link)
Will they be used for database files, or for media files? Will they be in some kind of RAID configuration?

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[info]jayp39
2008-02-21 11:25 pm UTC (link)
Media files. Alas, I don't know if they are going to be in any kind of RAID config or how they are going to use it. Speed is not very important and reliability isn't even that important for individual drives. It's just acting as a supernode, so if 500GB of songs go offline it's not actually the end of the world. That said I have no idea if they are going to try to do some kind of RAID on it, I'm not even sure what type of RAID would be sane for 48 drives...

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[info]jayp39
2008-02-21 11:30 pm UTC (link)
Apparently it will run RAID Z, whatever that is...

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[info]jkndrkn
2008-02-22 04:18 pm UTC (link)
Oh, it's a variant of RAID 5. It has improved fault-tolerance over other similar redundancy schemes.

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[info]jkndrkn
2008-02-22 04:16 pm UTC (link)
RAID 1 pairs might make sense, though if access time is an issue, some kind of striped array like RAID 6 might be useful.

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