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Former Member
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Will CEP2 units eventually NOT Bogart the host when they start up?

This has been true from day 1, just wondered if there are any plans to modify this behavior. In the 30+ seconds before a CEP2 unit gets going, (Intel Q9450 running XP, client 6.10.58) everything else BOINC and much of the host comes to a standstill. When it finally gets going, every other work unit has done the "exited with zero status but no finished file" thing, I'm guessing due to some heartbeat check failure. atm I'm only running WCG but guessing other projects' units are affected in the same way.

I know this is old news but it remains obnoxious behavior so wondered if it's even on the fix-it list. Didn't find anything in this forum on the above error message; a pointer to any existing answer would be great, else a new answer smile Thanks

Edit: p.s. imo this behavior could deter some of that increased project participation another thread says is desired...
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[Edit 1 times, last edit by Former Member at Jan 11, 2011 5:44:49 AM]
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Former Member
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Re: Will CEP2 units eventually NOT Bogart the host when they start up?

I have not seen any of this. I am running 3 WU at a time on a triple core amd machine with 4 GB of ram. Granted I am running a raid 0 setup with average read/write speed of about 250 MB/s. The WU do take 10 to 15 seconds to start, but I can use the computer just fine during that time.
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Former Member
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Re: Will CEP2 units eventually NOT Bogart the host when they start up?

The startup phase and the checkpoints lead to intense disk IO, so that's the first area to investigate:

- Defrag disk
- Exclude AV/Firewall scanning of BOINC Data Dir and apps
- Ideal, an exclusive partition, easily created with W7 (Got that for both Windows and Linux).

So, yes, I notice still, but rather briefly, No Bogarding, and only on my lowly 4.5 year old duo laptop. AND of course, the default 1 per device... override, never permitting more than 50% of the cores to run CEP2 concurrent. Running 3 on a triple core is really testing the device at it's limits, so run a mix with for instance HCMD2 or Clean Water and the experience vastly improves for most and many.

--//--

Edit: And if it's startup after boot, the client trying to load 3 concurrently use the delay start feature and avoid in operation for CEP2 tasks to run synchronous... let them start / finish with hours offset so at any one time only one task is loading / saving / checkpointing.
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[Edit 1 times, last edit by Former Member at Jan 11, 2011 10:17:46 AM]
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sk..
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Re: Will CEP2 units eventually NOT Bogart the host when they start up?

I think WCG has done a lot to facilitate some recent projects that don'€™t fit the mythical set and crunch idealism. Even with this effort I lost a couple of GPU tasks, probably as a result of a CEP2 task starting up at a bad time; just happened to have the wrong mix of heavy RAM tasks running -€“ it'€™s one thing choosing to run 3 or 4 different WCG projects along with one or two lightweight non-WCG projects, but what Boinc decides to download and run at any given time is still a game of chance. Anyway, it adds to the experience, and helps you appreciate when things are working well.
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Re: Will CEP2 units eventually NOT Bogart the host when they start up?

Thanks, skgiven. I have never had problems with CEP2 startup, so I appreciate hearing that more than one member have noticed problems.

Hi [B.S] sTrey,
Your problem is not quite unique, but it is unusual. Could you give us some information bout your system and post the Messages tab from BOINC Manager after a reboot? Also, if you have a result that was aborted by a CEP2 startup on your Results Status page, could you post the messages for it?

How many CEP2 work units are running when a fresh startup causes problems?

confused
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Re: Will CEP2 units eventually NOT Bogart the host when they start up?

Hmm I thought this was common with CEP2 or I'd have asked earlier!

Looking at settings, I bumped up my VM settings. BOINC startup follows. Thanks!

I only run one CEP2 unit at a time; the other 3 cores are running other WCG projects.
12/29/2010 00:38:24 Starting BOINC client version 6.10.58 for windows_intelx86
12/29/2010 00:38:24 log flags: file_xfer, sched_ops, task
12/29/2010 00:38:24 Libraries: libcurl/7.19.7 OpenSSL/0.9.8l zlib/1.2.3

12/29/2010 00:38:24 Processor: 4 GenuineIntel Intel(R) Core(TM)2 Quad CPU Q9450 @ 2.66GHz [Family 6 Model 23 Stepping 7]
12/29/2010 00:38:24 Processor: 6.00 MB cache
12/29/2010 00:38:24 Processor features: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss htt tm pni ssse3 cx16 sse4_1 nx lm vmx smx tm2 pbe
12/29/2010 00:38:24 OS: Microsoft Windows XP: Professional x86 Edition, Service Pack 3, (05.01.2600.00)
12/29/2010 00:38:24 Memory: 3.25 GB physical, 5.09 GB virtual
12/29/2010 00:38:24 Disk: 921.69 GB total, 686.87 GB free
12/29/2010 00:38:24 NVIDIA GPU 0: GeForce 9800 GT (driver version 18618, CUDA version 2020, compute capability 1.1, 512MB, 339 GFLOPS peak)
12/29/2010 00:38:24 World Community Grid URL http://www.worldcommunitygrid.org/; Computer ID 723164; resource share 8000
12/29/2010 00:38:24 World Community Grid General prefs: from World Community Grid (last modified 19-Nov-2010 23:17:30)
12/29/2010 00:38:24 World Community Grid Computer location: home
12/29/2010 00:38:24 World Community Grid General prefs: no separate prefs for home; using your defaults
12/29/2010 00:38:24 Reading preferences override file
12/29/2010 00:38:24 Preferences:
12/29/2010 00:38:24 max memory usage when active: 2494.05MB
12/29/2010 00:38:24 max memory usage when idle: 2992.86MB
12/29/2010 00:38:24 max disk usage: 40.00GB
12/29/2010 00:38:24 max CPUs used: 4
12/29/2010 00:38:24 don't use GPU while active
12/29/2010 00:38:24 max upload rate: 86016 bytes/sec
12/29/2010 00:38:24 (to change preferences, visit the web site of an attached project, or select Preferences in the Manager)
12/29/2010 00:38:24 Not using a proxy

That's it.
Edit: Running down my small cache of DDDT-2 now before letting CEP2 back in. Was reminded last night when I forced the one beta I got to start up and watched it happen again. Will see what happens with more VM.
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[Edit 2 times, last edit by Former Member at Jan 11, 2011 7:55:01 PM]
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sk..
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Re: Will CEP2 units eventually NOT Bogart the host when they start up?

Like many you are really up against the x86 wall, but perhaps increasing to 8GB VM would help?

Did you add the <start_delay>90</start_delay> to the cc_config.xml file?
- To dalay for 90 seconds.

Where there any MS pop-up error messages when tasks failed?

Are you using a live AV scanner; these can lockup the system quite badly when new tasks/apps start.

You may want to note that your GeForce 9800 GT uses 256MB main system memory - hence 3.25 and not 3.5GB!

From BoincStats I see you are not using your GeForce 9800 GT to crunch elsewhere or running other RAM heavy projects and I think you have XP x86 SP3, but out of interest what does your system have DDR3 or DDR2 RAM?

I would suggest you limit your system to 2 CEP2 tasks and avoid manual task suspensions.
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[Edit 1 times, last edit by skgiven at Jan 17, 2011 11:27:52 PM]
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Re: Will CEP2 units eventually NOT Bogart the host when they start up?

Like many you are really up against the x86 wall, but perhaps increasing to 8GB VM would help?
Did you add the <start_delay>90seconds</start_delay> to the cc_config.xml file?
<snipped>

Hi all,
Actually I had something similar happening at my end as well. Looking at the thread I decided to add the same option to my cc_config.xml file as well.
Hence went to http://boinc.berkeley.edu/wiki/Client_configuration , realized it option, changed my cc_config.xml file to reflect the same.

$ sudo leafpad /etc/boinc-client/cc_config.xml
<!--
This is the configuration file cc_config.xml of the BOINC core client.
For a complete list of all available options and logging flags and their
meaning see: http://boinc.berkeley.edu/trac/wiki/ClientMessages
-->
<cc_config>
<options>
<save_stats_days>60</save_stats_days>
<start_delay>90seconds</start_delay>
</options>
<log_flags>
<task>1</task>
<file_xfer>1</file_xfer>
<sched_ops>0</sched_ops>

<cpu_sched>0</cpu_sched>
<cpu_sched_debug>0</cpu_sched_debug>
<rr_simulation>0</rr_simulation>
<debt_debug>0</debt_debug>
<task_debug>0</task_debug>
<work_fetch_debug>0</work_fetch_debug>
<unparsed_xml>0</unparsed_xml>
<state_debug>0</state_debug>
<file_xfer_debug>0</file_xfer_debug>
<sched_op_debug>0</sched_op_debug>
<http_debug>0</http_debug>
<proxy_debug>0</proxy_debug>
<time_debug>0</time_debug>
<http_xfer_debug>0</http_xfer_debug>
<benchmark_debug>1</benchmark_debug>
<poll_debug>0</poll_debug>
<guirpc_debug>0</guirpc_debug>
<scrsave_debug>0</scrsave_debug>
<app_msg_send>0</app_msg_send>
<app_msg_receive>0</app_msg_receive>
<mem_usage_debug>0</mem_usage_debug>
<network_status_debug>0</network_status_debug>
<checkpoint_debug>1</checkpoint_debug>
</log_flags>
</cc_config>

Then asked BOINC to read , btw my boinc is at 6.10.58

$ boinc --version
6.10.58 x86_64-pc-linux-gnu

I did see that this feature has been put in BOINC in v 6.1.6 .
On running/parsing the BOINC client 6.10.58 I got the following error :-

Tuesday 18 January 2011 03:29:08 AM IST Re-reading cc_config.xml
Tuesday 18 January 2011 03:29:08 AM IST Unrecognized tag in cc_config.xml: <start_delay>
Tuesday 18 January 2011 03:29:08 AM IST Re-read config file
Tuesday 18 January 2011 03:29:08 AM IST Config: GUI RPC allowed from:
Tuesday 18 January 2011 03:29:08 AM IST log flags: file_xfer, task, benchmark_debug, checkpoint_debug


Please let me know where I am going wrong with the above ?
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[Edit 1 times, last edit by Former Member at Jan 17, 2011 10:10:47 PM]
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pirogue
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Re: Will CEP2 units eventually NOT Bogart the host when they start up?

It knows you mean seconds:
<start_delay>90</start_delay>
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Re: Will CEP2 units eventually NOT Bogart the host when they start up?

oh ok, my bad. did the correction, now no issues.
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