Memory requirement in the future

Message boards : Number crunching : Memory requirement in the future

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mnb

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Message 17126 - Posted: 26 May 2006, 12:31:58 UTC

Hello. My understanding is that the proteins that we have so far processed are rather small. (how big is the biggest so far?(the number of amino acids I mean))Is this going to change in the future? Are we going to see bigger and bigger proteins as time goes by or is it possible to fine tune the rosetta code to perfection with the smaller ones. Largest work unit I have seen so far used 260 MB of RAM.

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Robinski

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Message 17130 - Posted: 26 May 2006, 13:05:47 UTC

I hope it is possible to reduce memory requirements in the future.

And next to that I hope memory usage will be configurable, so less demanding work units can be send out to people that have less RAM available.
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Message 17134 - Posted: 26 May 2006, 14:34:50 UTC

I don't know for certain the LARGEST EVER sent, but the largest CASP protein so far is 445 amino acids (they show it in the list in the Nres column). Many of the WUs we were crunching prior to CASP were in the 150 AA range.

The good news is that the triple in number of AAs does not seem to triple the memory usage. The project's stated memory requirement is 512MB, but as has been discussed elsewhere... that's "more of a guideline than a rule". They have been reducing memory requirements recently, which is good, because otherwise this 445 protein might have caused some problems for people.
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Ananas

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Message 19088 - Posted: 21 Jun 2006, 22:03:31 UTC
Last modified: 21 Jun 2006, 22:04:11 UTC

Your computer has only 267894784 bytes of memory; workunit requires 232105216 more bytes

This message comes now and then - but why not always?

But still all my 256MB boxes (most of them have only 256MB, just 4 have more) get work and already did finish 8 hours WUs successfully.

They seem not to swap so much or the WUs would not give much credits, BOINC doesn't claim credits by HD activity ;-)

Maybe the current version needs less RAM?
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Message 19089 - Posted: 21 Jun 2006, 22:24:18 UTC
Last modified: 21 Jun 2006, 22:27:38 UTC

Hmm, a WU FRA_t298* I've running with v5.24 right now shows a "Working Set" (i.e. physical memory of 285MB) and virtual memory of 838MB!

And the WU data itself two main files are 8.5MB + 3MB (gzipped)!

The BigWU switch in BOINC is BADLY needed... or we'll lose many folks with medium RAM PCs and dialup.
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Message 19090 - Posted: 21 Jun 2006, 22:53:02 UTC - in response to Message 19089.  

The BigWU switch in BOINC is BADLY needed...


Actually... I was just noticing that many WUs seem to be <100MB now and felt great strides at reducing memory usage have been made. In fact, I've got two here right now running with <50MB. I guess they are both the "jumping" WUs, which have always used less memory.

Another user thought 100MB was out of line and aborted the WU! A little extreme I think, especially when the project says you should have 256MB minimum.

But it has been quite some time since I saw 285MB. You might want to report the WU name in the problems with 5.24 thread.

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Message boards : Number crunching : Memory requirement in the future



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