Posts by Anthony Ayiomamitis
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1) Message boards : Number crunching : Optimizing Collatz Sieve (Message 23534)
Posted 407 days ago by Anthony Ayiomamitis
EG,

I was about to post about my success when I saw your message.

Many thanks for your invaluable help and time!
2) Message boards : Number crunching : Optimizing Collatz Sieve (Message 23531)
Posted 407 days ago by Anthony Ayiomamitis
The Collatz configuration file (whatever_application_you_are_running.config) goes in the Collatz project folder. The standard BOINC log will not report that it has read the file, but it will be read when the client/project starts.

This thing is not as easy as I thought. Let me go back and reread the WHOLE thread from scratch!
3) Message boards : Number crunching : Optimizing Collatz Sieve (Message 23530)
Posted 407 days ago by Anthony Ayiomamitis
The cc_config.xml goes in the C:\ProgramData\BOINC\ directory.

Now I see said the blind man!

BOINC has now managed to find the file but complains about "12/7/2016 10:28:27 PM | | Unexpected text in cc_config.xml: verbose=1 kernels_per_reduction=48 threads=8 lut_size=17 sleep=1 reduce_cpu=0 sieve_size=28".

My contents are as follows:
<cc_config> verbose=1 kernels_per_reduction=48 threads=8 lut_size=17 sleep=1 reduce_cpu=0 sieve_size=28 </cc_config>

Also, can I restrict the config file to be applicable only to Collatz for now in the event the GPU is also used for another project here and there?
4) Message boards : Number crunching : Optimizing Collatz Sieve (Message 23527)
Posted 407 days ago by Anthony Ayiomamitis
Silly question: In the directory C:\ProgramData\BOINC\projects\boinc.thesonntags.com_collatz I have my cc_config.xml file with an initial set of parms prior to fiddling around so as to find an optimal set of values.

However, according to the BOINC log, the file is not found when I asked BOINC to read the config file.

I am sure I am doing something very careless. Thoughts?
5) Message boards : Number crunching : Optimizing Collatz Sieve (Message 22344)
Posted 624 days ago by Anthony Ayiomamitis
Will do, thanks.

Other projects are not an issue since I generally have one project at a time running on any one system.
6) Message boards : Number crunching : Optimizing Collatz Sieve (Message 22340)
Posted 625 days ago by Anthony Ayiomamitis
I also have an i3 (6300, 3.8 GHz) processor with Crucial Ballistix Tactical (2x4Gb) DDR4 2666 MHz and which is dual channel dual rank.
7) Message boards : Number crunching : Intel HD 530 - Functional Driver (Message 22334)
Posted 626 days ago by Anthony Ayiomamitis
Thanks MrS and Tom.

I am now up and running following a simple change in the BOINC Manager (Options -> Computing Preferences).
8) Message boards : Number crunching : Optimizing Collatz Sieve (Message 22333)
Posted 626 days ago by Anthony Ayiomamitis
I.e. for my HD530 that's 524 kB, an unusually large size for such a relatively weak GPU. Increasing the lut size showed very nice performance gains (I'm approaching 2x speed-up in my testing now) over the default setting.

ExtraTerrestrial,

Can you share the complete contents of your config file for the HD 530? It would be very much appreciated.

Also, what are your typical run times now?
9) Message boards : Number crunching : Intel HD 530 - Functional Driver (Message 22252)
Posted 642 days ago by Anthony Ayiomamitis
I cannot get my Intel HD 530 (with i3 6300 CPU) to work under Win 10 Pro 64-bit with the work units having returned with a computational error immediately upon starting.

Can I get some feedback as to the driver version with which people have been successful in processing their units?

Thanks.
10) Message boards : Number crunching : Your best result so far? (Message 22085)
Posted 679 days ago by Anthony Ayiomamitis
I am a newbie here on Collatz with my best result at the moment being "1860 steps for 2393035613056192636161 on 2015-01-24 11:26:19".

What is your best result to-date?

2284 steps for 2406880110143931390159 on 2015-10-10 05:26:03

I am looking at a custom build shortly and which will include a very serious upgrade from my existing HD 4000.
11) Message boards : Number crunching : WU's running out ... (Message 21978)
Posted 715 days ago by Anthony Ayiomamitis
Slicker, I will be running out of WU's shortly. If you can generate a few more, it would be appreciated. (eagerly matching towards the 20M badge)
12) Message boards : Number crunching : Optimizing Collatz Sieve (Message 21977)
Posted 715 days ago by Anthony Ayiomamitis
Any suggestions for an Intel HD 4000 integrated GPU? I currently need about 75 minutes to complete a work unit.

Thanks.
13) Message boards : Number crunching : fake result of Collatz Conjecture (Message 21734)
Posted 796 days ago by Anthony Ayiomamitis
I sent a couple of private messages to Slicker just yesterday about this matter and user. No reply from him.
14) Message boards : Number crunching : WUs completing too quickly & getting too few WUs (Message 21713)
Posted 798 days ago by Anthony Ayiomamitis
Where do they sell those at?


Amazon...http://www.amazon.com/Sapphire-Radeon-PCI-Express-Graphics-11197-01-40G/dp/B007JGARVU/ref=sr_1_3?ie=UTF8&qid=1447242617&sr=8-3&keywords=amd+7970+gpu

and my guess is many other places too

Mike, which BOINC projects benefit particularly well from this card? I know it eats up Collatz work units especially well.
15) Message boards : Number crunching : WUs completing too quickly & getting too few WUs (Message 21698)
Posted 800 days ago by Anthony Ayiomamitis

WTF is with your computers ?! My tasks take ~60 minutes on the Nvidia GPU, ~2-3 hours on Intel GPU and up to 30 hours on CPU. How do all of you get those tasks done in minutes?!!!!!

Pretty much my case as well with my dinosaur Intel HD 4000 which requires about 75 minutes on average per work unit (+ 0.544 cores). I am not really complaining - in fact, I love it - since this the secondary GPU in my MSI GE70 and which nets me around 80k credits per day.

I also have an NVidia GeForce GTX 660M (yes, slightly dated) but I cannot get it to work with Collatz after we moved on from V6.04 with work units bombing after the first second or two. Oh how nice it would be to also have my 660M as well running Collatz and similar to when we were at V6.04!
16) Message boards : News : Collatz Sieve v1.21 released for Windows (Message 21256)
Posted 863 days ago by Anthony Ayiomamitis
Slicker, please do NOT touch anything. Things are finely running very smoothly and with a good drop in the turnaround time. :-)
17) Message boards : News : Collatz Sieve v1.21 released for Windows (Message 21255)
Posted 863 days ago by Anthony Ayiomamitis
After applying the suggested upgrade, I am still getting the same error: http://boinc.thesonntags.com/collatz/result.php?resultid=22059898 .
18) Message boards : News : Collatz Sieve v1.21 released for Windows (Message 21253)
Posted 863 days ago by Anthony Ayiomamitis
Please ignore .... file downloaded and installed.

Time for some work units.
19) Message boards : News : Collatz Sieve v1.21 released for Windows (Message 21252)
Posted 863 days ago by Anthony Ayiomamitis
I have tried with a second 64-bit laptop and with the same result.
20) Message boards : News : Collatz Sieve v1.21 released for Windows (Message 21251)
Posted 863 days ago by Anthony Ayiomamitis
The validation bug is now fixed but some have reported that the application errors out immediately. If you run into error -1073741515, please try installing the latest VS2012 C++ runtime available from Microsoft at https://www.microsoft.com/en-us/download/details.aspx?id=30679. VS2012 was recently updated to SP4 on my laptop and that is likely the cause of the missing DLL error.

I press on the download button and I am informed that the 64-bit executable has been downloaded (immediately) on the next screen. However, no such download has occurred.

Any help would be appreciated.


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