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Old 2010-01-27, 14:31   #1
cpslacker
 
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Lightbulb Tweaks for RAM heavy systems?

Say, in theory, I have a system with 32 cores and 256GB of DDR3 1066 memory. Are there any tweaks that I can do to utilize more of the RAM? Or is that a exercise in futility?
Thanks!
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Old 2010-01-27, 14:36   #2
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Select "P-1 factoring" as work type for about half the cores and set the memory values quite high.
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Old 2010-01-27, 14:49   #3
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Quote:
Originally Posted by cpslacker View Post
Say, in theory, I have a system with 32 cores and 256GB of DDR3 1066 memory. Are there any tweaks that I can do to utilize more of the RAM? Or is that a exercise in futility?
Thanks!
Or just give it to me and I'll relieve you of all the trouble...
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Old 2010-01-27, 18:47   #4
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Quote:
Originally Posted by cpslacker View Post
Say, in theory, I have a system with 32 cores and 256GB of DDR3 1066 memory. Are there any tweaks that I can do to utilize more of the RAM? Or is that a exercise in futility?
Thanks!
Is it really 32 cores or 16 cores with hyper-threading? It makes a difference.
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Old 2010-01-27, 20:12   #5
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Quote:
Originally Posted by lfm View Post
Is it really 32 cores or 16 cores with hyper-threading? It makes a difference.
It doesn't fit any currently-shipping object; I _suspect_ it's a four-socket Nehalem EX, in which case it has a true 32 cores.

I should be getting a dual-Shanghai with 32GB shortly, which would be able to run really enormous ECM or P +-1 jobs, but I am not at all excited by the prospect of running such jobs.
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Old 2010-01-27, 20:50   #6
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Quote:
Originally Posted by fivemack View Post
It doesn't fit any currently-shipping object; I _suspect_ it's a four-socket Nehalem EX, in which case it has a true 32 cores.

I should be getting a dual-Shanghai with 32GB shortly, which would be able to run really enormous ECM or P +-1 jobs, but I am not at all excited by the prospect of running such jobs.
Not much else in GIMPS needs that much memory. You might wanna look into NFS projects or some such. Some of them use huge memory.
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Old 2010-01-27, 21:23   #7
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Err, yes, I do look into NFS projects from time to time.

http://www.mersenneforum.org/showthread.php?t=12416
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Old 2010-01-27, 21:33   #8
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Quote:
Originally Posted by fivemack View Post
Err, yes, I do look into NFS projects from time to time.

http://www.mersenneforum.org/showthread.php?t=12416

Perhaps he was referring to the OP
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Old 2010-01-27, 21:51   #9
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Quote:
Originally Posted by fivemack View Post
Err, yes, I do look into NFS projects from time to time.

http://www.mersenneforum.org/showthread.php?t=12416
he he, OK. You could still run GIMPS as a low priority background task. the fact that it is relatively low memory required makes it better as a background task, less to swap out when you want to run something important.
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Old 2010-02-05, 16:57   #10
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Default Really has 32 cores.

Yes, it is really 32 physical cores. Don't get all hung up on the "currently shipping" thing. ijs
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