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Scott Brown

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Message 7856 - Posted: 25 Mar 2009, 23:02:38 UTC - in response to Message 7851.  


hmm - only a matter of local cache size. even my old 9600gt runs them under 24 hours. so if i run @ 0.01 cache...
....and donate a candle to santo improvisario each and every day...



Many workunits can run on a 9600GT under 24 hours, but the latest larger units (the 42xx credit ones) really push the limit. I have seen one OC 9600GT (1800 shader) which took about 25 hours to finish one of these. Your OC of 1850 might get you under 24 hours, but it will be very close. So, for most who are not willing to push their 9600 to the edge in OC, the larger units will edge just over the 24 hour mark. Indeed, even a 96 shader card needs to be pushed up to the 1650-1700 shader clock range to break the 24 hour deadline.


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Message 7857 - Posted: 25 Mar 2009, 23:09:48 UTC - in response to Message 7856.  


We use reliable hosts (return < 2 days) to speed up the slower batch of WUs. Still, we need all the cards even the one returning after 3 days to do all the work.

We will probably extend the 1 day limit to 1.5 days to give at least the possibility to finish to more people, not just the top cards.

gdf
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Message 7858 - Posted: 26 Mar 2009, 0:06:22 UTC - in response to Message 7856.  

Many workunits can run on a 9600GT under 24 hours, but the latest larger units (the 42xx credit ones) really push the limit. I have seen one OC 9600GT (1800 shader) which took about 25 hours to finish one of these. Your OC of 1850 might get you under 24 hours, but it will be very close. So, for most who are not willing to push their 9600 to the edge in OC, the larger units will edge just over the 24 hour mark. Indeed, even a 96 shader card needs to be pushed up to the 1650-1700 shader clock range to break the 24 hour deadline.


of course - then it will be up to the project to keep them in the run and distribute the shorter WUs to the slower hosts. information is available, and the scheduler can make use of it.
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Message 7860 - Posted: 26 Mar 2009, 7:36:19 UTC - in response to Message 7856.  
Last modified: 26 Mar 2009, 7:37:26 UTC

[Thus my question about simply shortening the deadline...

The screams of anguish if the total deadline was shortened ... :)

Even with the 4 day deadline there are folks complaining that they would like it extended ... to my mind this is better in that it is gentle suasion to have people move to faster GPUs ...

The other good news on the horizon is that we are seeing more activity on the GPU front with The Lattice Project trying their application on an unsuspecting world and Milky Way looks to be making additional moves too ... heck, MW may be the first project that has a GPU application for the Mac ... of course, with my luck I won't be able to use it ...

{edit} fixed teh quote to the correct one ... {/edit}
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Message 7862 - Posted: 26 Mar 2009, 11:17:27 UTC - in response to Message 7855.  

...instead of buying a new $500(US) GPU, why not spend much less than that on on older single core machine with PCIe slots?


If all you want to do is get GPUGRID to not download so large a WU queue so that it can return WUs in <24 hours, there's several zero cost options available that don't require you to swap out hardware. Especially if you use the computer for 'normal' purposes, you certainly don't want to swap out your quad-core for a single core cpu.

Note that I've never tried any of these options, so it's possible they might not work as expected.

Some options are:

1) Change your BOINC configuration to only use 1 CPU core. There's two ways of doing this:
1a) Use the BOINC Manager option to limit # of CPU cores to 25%, (quad-core), 33% (triple core), or 50% (dual core).
1b) Use the config file option to instruct BOINC to pretend it's a single core system. (I think this is the NCPUS flag, but I could be mistaken.)

2) Lower the work queue size to 0.1 days or similar so that BOINC never requests more than one WU.

3) Wait until a release of BOINC and/or Lattice comes out that assigns WUs based on the number of GPUs instead of CPUs.

Note that option 1 (a or b) will reduce (or possibly elliminate) any other CPU BOINC work being done on the computer. This also applies to actually reducing the number of CPU cores with new hardware.

Mike
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Message 7864 - Posted: 26 Mar 2009, 11:30:19 UTC - in response to Message 7832.  

So,
we have to redistribute quite a bit of credits to the users in order to align to Seti factor as we were undercrediting.

First change is already in place.
People who returns results within 24 hours will receive 50% more credits. We might adjust these values in the future.

gdf


Unless I misunderstand what you're saying, this seems to me like an ill-advised policy. It penalizes people using multi-core CPUs and encourages users to abort WUs.

Mike
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Message 7873 - Posted: 26 Mar 2009, 18:54:54 UTC - in response to Message 7864.  

Unless I misunderstand what you're saying, this seems to me like an ill-advised policy. It penalizes people using multi-core CPUs and encourages users to abort WUs.

Depends on how many GPU cores you have to match ... :)

And aborting tasks may not be all that bad of a deal if they can get issued and returned faster that way. We just THINK it is waste to do so ...

The only other thing I would say is that I have not noticed a change in the awards yet ... unless I am missing something ...
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Message 7875 - Posted: 26 Mar 2009, 19:06:22 UTC - in response to Message 7873.  

Remember that reliable hosts are the one which returns results in two days and 95% success rate. These get priority.

We will try to extend the 1 day deadline as already said and to reduce the queue by matching the number of gpus.

gdf
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Message 7895 - Posted: 27 Mar 2009, 5:57:29 UTC - in response to Message 7875.  

Remember that reliable hosts are the one which returns results in two days and 95% success rate. These get priority.

We will try to extend the 1 day deadline as already said and to reduce the queue by matching the number of gpus.

gdf

Have you considered exposing that indicator in the computer information page? It would sure be nice to know for sure if a system qualifies or not ...
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Message 7905 - Posted: 27 Mar 2009, 12:13:58 UTC - in response to Message 7875.  

Remember that reliable hosts are the one which returns results in two days and 95% success rate. These get priority.

We will try to extend the 1 day deadline as already said and to reduce the queue by matching the number of gpus.

gdf


I've already lost the extra 50% Credit on a couple WU's, the WU was done in Time (The 24 hr Period) but didn't report back in Time because the Manager didn't send it back promptly after it was finished. Could we please have the Deadline extended to 36 hours at least.

All my Cards are Capable of running & returning the WU's within the 24 hr period but if the Manager won't send them back in time it doesn't do any good then ...
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Message 7907 - Posted: 27 Mar 2009, 14:20:55 UTC

LOL ... Just got this WU in by 3 Minutes or the 50% Extra Credit would have been lost. It had been finished 2 hours ealier but sat there until I manually sent it in.

I've set the Project to NNW & will have to Babysit the WU's and only get new ones as needed ...
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Message 7908 - Posted: 27 Mar 2009, 14:57:15 UTC - in response to Message 7905.  

···All my Cards are Capable of running & returning the WU's within the 24 hr period but if the Manager won't send them back in time it doesn't do any good then ...


You can activate the <report_results_immediately> option in your cc_config.xml file. If you do so, then the WUs are sent as soon as they are done.
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Message 7910 - Posted: 27 Mar 2009, 15:31:02 UTC - in response to Message 7908.  
Last modified: 27 Mar 2009, 15:31:30 UTC

To easy the effort, we are giving now:
60%+ for WUs returned within 1.5 days
20%+ for Wus returned within 2.0 days

We will probably also extend the deadline to 5 days for all the others.

gdf
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Message 7912 - Posted: 27 Mar 2009, 15:36:30 UTC - in response to Message 7910.  

To easy the effort, we are giving now:
60%+ for WUs returned within 1.5 days
20%+ for Wus returned within 2.0 days

We will probably also extend the deadline to 5 days for all the others.

Thank you ...

Can you give us a chart of what we should expect? Looking at my daily totals it seems that I am getting higher returns, but, when I look at the tasks the individual tasks seem to have the same numbers as in the past.

Thanks ...

And for those asking for longer deadlines ... see ... sometimes you get your wish ... :)
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Message 7913 - Posted: 27 Mar 2009, 16:05:29 UTC - in response to Message 7910.  

To easy the effort, we are giving now:
60%+ for WUs returned within 1.5 days
20%+ for Wus returned within 2.0 days

We will probably also extend the deadline to 5 days for all the others.

gdf


Thanks a bunch GDF, my Cards only take 5-6 hours to run the WU's but with a Cache of 4 WU's I'm always on the Edge because 4 take 20-23 hr's to do so if they don't report right away then they go over a 24 hour deadline. But with 1 1.5 Day Deadline I'll have no problems now getting them reported ... :)
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Message 7914 - Posted: 27 Mar 2009, 16:07:59 UTC - in response to Message 7908.  

···All my Cards are Capable of running & returning the WU's within the 24 hr period but if the Manager won't send them back in time it doesn't do any good then ...


You can activate the <report_results_immediately> option in your cc_config.xml file. If you do so, then the WUs are sent as soon as they are done.


That work for some of the Clients & some it doesn't work, I had thought of that but hadn't got around to it yet with so many other things going on.
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Message 7917 - Posted: 27 Mar 2009, 19:55:31 UTC - in response to Message 7914.  

···All my Cards are Capable of running & returning the WU's within the 24 hr period but if the Manager won't send them back in time it doesn't do any good then ...


You can activate the <report_results_immediately> option in your cc_config.xml file. If you do so, then the WUs are sent as soon as they are done.


That work for some of the Clients & some it doesn't work, I had thought of that but hadn't got around to it yet with so many other things going on.


If for some reason there is a back-off from contacting the server, the report_results_immediately does not override this. However, with a manual update or the countdown to contact goes to 0, it will report immediately then. I've had this set for a while because I have 3 GPU's and *only* a Quad, often leaving one not running (if 2 WU's are finished and pending sending to server, 1 of the 3 GPU's will not be running until another WU downloaded).
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Message 7942 - Posted: 28 Mar 2009, 20:15:59 UTC

An intersting change. It's actually in the folding@home spirit, where their points don't neccessarily represent FLOPS, but rather the value of the calculations. E.g. a CPU-FLOP is worth more than a GPU-FLOP, as it's more flexible. And in the case of GPU-Grid a "fast-FLOP" is worth more, as it allows the project to progress faster.

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Message 7943 - Posted: 28 Mar 2009, 20:52:06 UTC
Last modified: 28 Mar 2009, 20:52:56 UTC

I don't seem to be able to locate the cc_config.xml file in my BOINC folder. Is it someplace else or can one be created and put in the folder? If so how do I do it.
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Message 7944 - Posted: 28 Mar 2009, 21:02:32 UTC - in response to Message 7943.  

In your "BOINC/user data" folder create a text file and name it cc_config.xml. The contents can be:


<cc_config>
<options>
<report_results_immediately>1</report_results_immediately>
</options>
</cc_config>


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