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ashj

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Message 8774 - Posted: 18 Dec 2009, 16:42:40 UTC

Hi All,

I now have two available boxes for crunching.
This is after detaching from MWas. They do not like old boxes helping them!

Can anyone please tell me the lowest spec possible for a box to crunch a success on a task for C@H within the deadline time?

Thanks in advance

ashj
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Profile Erkan Yilmaz

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Message 8775 - Posted: 18 Dec 2009, 20:43:52 UTC - in response to Message 8774.  

Hello ashj,

not sure where this info can be found on this website. But here are some hosts listed.

Standing on the shoulders of giants
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ashj

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Message 8776 - Posted: 19 Dec 2009, 17:55:09 UTC

Hi Erkan,

Thanks for your reply.

I think I will try my slowest and lowest box spec with C@H and then see what happens.

With Regards to all crunchers

ashj
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Profile Erkan Yilmaz

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Message 8778 - Posted: 20 Dec 2009, 10:16:00 UTC - in response to Message 8776.  

good luck
please keep us informed about your results
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Profile Martin Ryba
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Message 8784 - Posted: 21 Dec 2009, 3:37:46 UTC - in response to Message 8776.  

The biggest issue with C@H is memory usage; it tends to grow over the course of the work unit, maxing out at around 500MB (yes, half a gig). If your machine has less than 768MB of RAM (my oldest one that runs C@H successfully), then don't try it. The application will tend to automatically exit depending on your settings if you have a 512MB machine, since it checks for at least 470MB or so available when it launches. At least it did on my old laptop.

YMMV.

-Marty
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Profile Misfit
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Message 8789 - Posted: 26 Dec 2009, 22:30:37 UTC - in response to Message 8784.  

Considering how increasing large the memory reqs of workunits can get I'd recommend having 2GB of memory per WU running.
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.clair.

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Message 8793 - Posted: 27 Dec 2009, 21:24:00 UTC - in response to Message 8789.  

Considering how increasing large the memory reqs of workunits can get I'd recommend having 2GB of memory per WU running.


2GB would be nice but the three 98se boxs i run will not boot with more than 1GB installed, no thanks to MS for that little gift, having deliberetly limited it to that amount.

Ok ok i know that 98se is an old croak of an os but it works so i use it
and i dont want to buy another MS os,
the linux client is just a little bit slower at crunching.

I find 1GB to be a bare minimum for a cosmo only boinc only crunch box,
and they still sometimes run out of ram and hit the swap space
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steveplanetary

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Message 8794 - Posted: 28 Dec 2009, 7:56:10 UTC - in response to Message 8793.  

I have 1 GB of physical memory running XP. Of course it uses virtual memory, but all applications seem to. The maximum amount of physical memory for C@H is sometimes over 600 MB, but I also crunch for E@H, and I keep the apps in memory. I used to crunch for MW also, but with the larger WU sizes and short turnaround times there BOINC would crunch the MW WUs to the detrimate of my other projects. Otherwise, I haven't had any problems. I did have to upgrade from 512 memory to 1024 in order to crunch C@H, however.
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skivelitis
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Message 8935 - Posted: 7 Apr 2010, 10:38:19 UTC - in response to Message 8794.  

Does anyone know of any plans to lower the Ram usage/requirements? I used to crunch COSMO all the time and am well aware of it's long history off problems. It has always been one of my favorites however. I simply cannot run it at the present time with the current RAM usage. Any info would be appreciated.
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Message 8936 - Posted: 7 Apr 2010, 18:19:17 UTC - in response to Message 8789.  

Considering how increasing large the memory reqs of workunits can get I'd recommend having 2GB of memory per WU running.

I've got 2G on a dual core and I had to quit running 2 wu's at a time. I've got 1 CAMB and 1 enigma going at the same time and I'm still going to swap. I'm also maxing out FreeHAL, so that's part of it. I think going to swap is causing the work units to slow down a lot. One work unit I'm currently running is over 27 hours and that seems too long for me. I don't think 420 per wu is enough for the size of these and the length. I guess it's still more than claimed, but maybe it's not claiming enough either.

Anyways, I'm interested in things relating to space, so that's why I'm here mainly, but I'm also trying to keep my stats up.
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skivelitis
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Message 8938 - Posted: 7 Apr 2010, 20:34:46 UTC

trigggl, we have exactly the same issues, but I have only 768mb of RAM!!!!!
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JLConawayII

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Message 8968 - Posted: 30 May 2010, 12:02:30 UTC - in response to Message 8784.  
Last modified: 30 May 2010, 12:02:48 UTC

...maxing out at around 500MB...

-Marty


This is not entirely accurate, I have seen WUs reach 780 MB. I generally see two WUs using around 700-750 and the other two using 400-500 or so.
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Forums : General Topics : minimum spec of old pcs?