Re: LDB question

From: Jason Lee (hellocunning_at_hotmail.com)
Date: Sun Aug 07 2005 - 11:32:08 CDT

Hi, Jim:

Thank you very much for you kindful reply. Acturally I have checked a lot
of tutorial ouput log files of namd on your webiste, which also have such
ouput. But my job will crash when it run one or two days. This job was
running on myrinet connection enviroment, on which hard disks are
dynamically mounted on the system. But it won't crash when I run it by using
TCP connection. I am wondering whether this is a issue.

Thanks a lot.
Jason

>From: Jim Phillips <jim_at_ks.uiuc.edu>
>To: Jason Lee <hellocunning_at_hotmail.com>
>CC: namd-l_at_ks.uiuc.edu
>Subject: Re: namd-l: LDB question
>Date: Fri, 5 Aug 2005 12:28:10 -0500 (CDT)
>
>
>Those LBD messages are part of every parallel run and are quite normal.
>It's just reporting how the load balancer is doing. In this case, your
>maximum load is only slightly more than your average load, and there are
>171 total messages being sent between processors, which looks pretty good.
>
>The older message from Brain Bennion was a hang during load balancing,
>probably due to a compiler bug (a workaround is in 2.6b1).
>
>-Jim
>
>On Tue, 2 Aug 2005, Jason Lee wrote:
>
>>Hi, all:
>>
>>I am running a simulation for a large system. It will give following
>>output, but it still runs well.
>>
>>LDB: LOAD: AVG 6.44591 MAX 7.94926 MSGS: TOTAL 170 MAXC 7 MAXP 16 None
>>LDB: LOAD: AVG 6.44591 MAX 6.5742 MSGS: TOTAL 171 MAXC 7 MAXP 16 Refine
>>PRESSURE: 1900400 1554.25 -211.193 332.088 -102.242 1944.5 -137.892
>>188.451 -190.12 2021.06
>>GPRESSURE: 1900400 -459.307 1.33026 358.845 106.08 -300.498 -87.3214
>>209.22 -268.485 -114.336
>>PRESSAVG: 1900400 -291.044 -149.405 166.55 -193.018 -128.237 -22.3247
>>166.934 66.1118 -24.2065
>>GPRESSAVG: 1900400 -275.153 -137.005 164.977 -191.022 -143.709 -30.8227
>>170.748 59.8807 -27.6602
>>ENERGY: 1900400 6676.8317 3999.1887 0.0000
>>0.0000 -88574.7776 7693.2389 0.0000 0.0000
>>19183.2864 -51022.2319 298.8598 -50711.3286 -50714.6861
>>299.0018 1839.9330 -291.3801 277848.8653 -147.8292
>>-148.8406
>>
>>
>>
>>I have read the following message
>>http://www.ks.uiuc.edu/Research/namd/mailing_list/namd-l/0328.html
>>It seems it is related with load balancer. But I still don't understand
>>this issue. Will this affect the simulation accuracy? Thanks a lot.
>>Jason
>>
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