Message boards :
Number crunching :
extremely slow machine
Message board moderation
Author | Message |
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Zombu2 Send message Joined: 24 Feb 01 Posts: 1615 Credit: 49,315,423 RAC: 0 |
Hi This machine here is an extremely slow cruncher http://setiathome.berkeley.edu/show_host_detail.php?hostid=7650887 Anyone any suggestions to make this thing hum ? thnx I came down with a bad case of i don't give a crap |
Zombu2 Send message Joined: 24 Feb 01 Posts: 1615 Credit: 49,315,423 RAC: 0 |
nobody? I came down with a bad case of i don't give a crap |
Zombu2 Send message Joined: 24 Feb 01 Posts: 1615 Credit: 49,315,423 RAC: 0 |
I found 2 other machines that only use about 30% cpu instead of 100 and i cannot figure out what is going on and how to fix it I came down with a bad case of i don't give a crap |
ivan Send message Joined: 5 Mar 01 Posts: 783 Credit: 348,560,338 RAC: 223 |
Hi I presume you have HyperThreading turned on. Your completed tasks for 100 credits take roughly twice as long as my 2x6-core Xeon with HT off so I don't think it's doing too badly. You need to wait a lot longer than two days to see what your RAC finally asymptotes to. |
Zombu2 Send message Joined: 24 Feb 01 Posts: 1615 Credit: 49,315,423 RAC: 0 |
Hi Hyperthreading is off they are real 24 cores second machine is pretty much idle on cpu and gpu i dunno whats going on I came down with a bad case of i don't give a crap |
TBar Send message Joined: 22 May 99 Posts: 5204 Credit: 840,779,836 RAC: 2,768 |
I found 2 other machines that only use about 30% cpu instead of 100 and i cannot figure out what is going on and how to fix it Seems to me if you run 100% of the CPU cores all the cores run slower than if you just run 90% or so of the cores. Have you tried it with just 20 cores running tasks instead of 24? |
Zombu2 Send message Joined: 24 Feb 01 Posts: 1615 Credit: 49,315,423 RAC: 0 |
i did give that a try yesterday but no difference second machine has 1 core left over that does nothing but feed the video card still cpu usage is 25-30% instead of 100% it's an odd problem I came down with a bad case of i don't give a crap |
TBar Send message Joined: 22 May 99 Posts: 5204 Credit: 840,779,836 RAC: 2,768 |
i did give that a try yesterday but no difference Have you tried upping the task priority? Try the entry in the cc_config.xml file; <cc_config> <log_flags> <sched_op_debug>1</sched_op_debug> </log_flags> <options> <save_stats_days>365</save_stats_days> <no_priority_change>1</no_priority_change> <ncpus>20</ncpus> </options> </cc_config> |
Zombu2 Send message Joined: 24 Feb 01 Posts: 1615 Credit: 49,315,423 RAC: 0 |
I give that a shot I came down with a bad case of i don't give a crap |
Zombu2 Send message Joined: 24 Feb 01 Posts: 1615 Credit: 49,315,423 RAC: 0 |
Nope did not work it is like the whole machine is lazy and does not want to go I came down with a bad case of i don't give a crap |
DJStarfox Send message Joined: 23 May 01 Posts: 1066 Credit: 1,226,053 RAC: 2 |
Did you check your cpuspeed config file? Maybe it's stuck on the powersave governor. Run these commands and post the output: grep MHz /proc/cpuinfo lsmod | grep cpu |
Zombu2 Send message Joined: 24 Feb 01 Posts: 1615 Credit: 49,315,423 RAC: 0 |
cpu MHz : 2393.805 cpu MHz : 2393.805 cpu MHz : 2393.805 cpu MHz : 2393.805 cpu MHz : 2393.805 cpu MHz : 2393.805 cpu MHz : 2393.805 cpu MHz : 2393.805 cpu MHz : 2393.805 cpu MHz : 2393.805 cpu MHz : 2393.805 cpu MHz : 2393.805 cpu MHz : 2393.805 cpu MHz : 2393.805 cpu MHz : 2393.805 cpu MHz : 2393.805 cpu MHz : 2393.805 cpu MHz : 2393.805 cpu MHz : 2393.805 cpu MHz : 2393.805 cpu MHz : 2393.805 cpu MHz : 2393.805 cpu MHz : 2393.805 cpu MHz : 2393.805 I came down with a bad case of i don't give a crap |
Rasputin42 Send message Joined: 25 Jul 08 Posts: 412 Credit: 5,834,661 RAC: 0 |
Just a silly idea. Try setting the boinc-client process to a higher priority. |
Zombu2 Send message Joined: 24 Feb 01 Posts: 1615 Credit: 49,315,423 RAC: 0 |
they are high priority according to boinc it takes 8 hours to complete 1 cpu task per core on a friggin xeon o.0 I came down with a bad case of i don't give a crap |
Rasputin42 Send message Joined: 25 Jul 08 Posts: 412 Credit: 5,834,661 RAC: 0 |
I guess, you turned all possible energy saving features off? |
Zombu2 Send message Joined: 24 Feb 01 Posts: 1615 Credit: 49,315,423 RAC: 0 |
It's a server these things never heard of energy savings :) I came down with a bad case of i don't give a crap |
Darth Beaver Send message Joined: 20 Aug 99 Posts: 6728 Credit: 21,443,075 RAC: 3 |
Zombu2 CPU only 2.4 units taking aprox 4 hrs 50 mins for MB not doing AP's How many cores do you have running ? you have 169 units in progress !!!!??? Is there not a limit of 100 per CPU , not how many cores on the CPU ? my Core 2 Quad 2.7ghz takes 3 hrs 40 mins per unit on the CPU do you have Hyper Thread off ? Sorry but don't know much about Linux so can't even compare times so if info help good otherwise your on your own EDIT: your not running Linux in a VM are you ?? |
Zombu2 Send message Joined: 24 Feb 01 Posts: 1615 Credit: 49,315,423 RAC: 0 |
Zombu2 yeah cpu's are 2.4 but Xeons i have 24 cores running hyperthreading off looking at htop all cores are at 100% and each WU takes about 8 hours to complete according to seti client second machine is a I7 920 and is only using about 20-30% resources for no reason all power savings is off all processes set to high priority I found the reason why the gpu tasks froze on the I7 ... card got hot and did not spin up the fan and slowed down to a halt cranking the fan to 100% got that going at least Edit: To compare i just ordered a dell r910 with 4 newer 8 core xeons at 2.93ghz (looking to find some 10 core xeons on ebay to swap em with) probably will be a week till i see the machine I came down with a bad case of i don't give a crap |
Darth Beaver Send message Joined: 20 Aug 99 Posts: 6728 Credit: 21,443,075 RAC: 3 |
Bro it's only bin only 2 days and yesterday they had trouble . I ran outa units so would wait a few days to let things settle . even 24 cores I wouldn't expect the same as a good gpu |
Zombu2 Send message Joined: 24 Feb 01 Posts: 1615 Credit: 49,315,423 RAC: 0 |
Bro it's only bin only 2 days and yesterday they had trouble . I ran outa units so would wait a few days to let things settle . i understand that it will not come close to a gpu ...but 8 hours lol i guess i have to load it up with 750 ti's (it could fit 7) I came down with a bad case of i don't give a crap |
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