Multi core greater than 80 core
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Multi core greater than 80 core
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Pepo  Send message Joined: 5 Aug 99 Posts: 308 Credit: 418,019 RAC: 0 
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Can we dumb this down a little and just give a one-liner on why those of use with 40 physical cores (and 80 threads) may only be seeing 20 in our account's "Computer Information" pages BOINC 6.12.27 is available for testing, with the code from both both changesets [trac]changeset:23214[/trac]+[trac]changeset:23215[/trac] (now joined into [trac]changeset:23576[/trac]). Could please someone with CPUs organized into groups try it? Peter ID: 1109304 ·  |
MarkJ     Send message Joined: 17 Feb 08 Posts: 1139 Credit: 80,854,192 RAC: 5 
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Can we dumb this down a little and just give a one-liner on why those of use with 40 physical cores (and 80 threads) may only be seeing 20 in our account's "Computer Information" pages And I'll add remove the <ncpus> entry before trying 6.12.27. It should now recognize all available cpu's. If you could post the startup info from the Event Log, as its now known, about how many processors it finds. ID: 1109332 · |
 ML1 Send message Joined: 25 Nov 01 Posts: 20291 Credit: 7,508,002 RAC: 20 
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Looks like the special fix for Windows has been added to the latest Boinc version: Development BOINC 6.12.27 change log 6.12.27 change log Anyone able to compare the system overheads between Windows with the explicit processor groups scheduling compared to the more general scheduling used by other OSes? What percentage CPU are the scheduling overheads in any case? Happy fast crunchin', Martin See new freedom: Mageia Linux Take a look for yourself: Linux Format The Future is what We all make IT (GPLv3) ID: 1109662 · |
Richard Haselgrove  Send message Joined: 4 Jul 99 Posts: 14650 Credit: 200,643,578 RAC: 874
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Warning - don't use v6.12.27 just yet - see MarkJ's 'Release Notes' thread. ID: 1109677 · |
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MarkJ Send message Joined: 17 Feb 08 Posts: 1139 Credit: 80,854,192 RAC: 5
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In fact don't use 6.12.27 at all. 6.12.28 is now out and corrects the issue. If you'd like to test the >64 cpu changes under windows then use this version. ID: 1109921 · |
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Todd Madson Send message Joined: 4 Aug 99 Posts: 71 Credit: 30,888,293 RAC: 15 
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Absolutely crazy. Those systems in this thread makes my corei7 2.8 with 12 gigs of ram look like a pocket calculator by comparison. Ouch! 
ID: 1109964 · |
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ML1 Send message Joined: 25 Nov 01 Posts: 20291 Credit: 7,508,002 RAC: 20
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Absolutely crazy. Or... Just add a GPU or two. I'm running a few tests and comparisons at the moment. One system that was gaining about 1000 RAC on a CPU alone, jumped up towards 250 000 RAC upon adding a GPU! That has also made the boinc manager almost unusable for displaying all tasks or for displaying a combined chart of all projects. For the chart, all I see now is an exponentially increasing line for the GPU WUs and nearly flat lines down in the noise for all other projects that are CPU-only. Can the boinc manager chart display have the option to rescale the vertical axis to be logarithmic?! Happy fast crunchin', Martin See new freedom: Mageia Linux Take a look for yourself: Linux Format The Future is what We all make IT (GPLv3) ID: 1109974 · |
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