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BobCat13
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Message 971 - Posted: 14 Feb 2013, 5:04:28 UTC

I have a long running Nano Tech task, and notice that every few minutes it writes a couple files in the slot directory it is in. These files are named as follows, incrementing 1 with each new file:

dump877.xyz
log.877
dump878.xyz
log.878

Looking at the command line in stderr.txt, I see the following:

20:19:10 (5032): wrapper: running start_lammps.exe ( -var restart 0 -in lammps_script -var looprun 3000 -var loopnumber 6668 -var thermon 3334 -var dumpn 33340 -var e_steps 0 -var l_script lammps_script -var vx 0.00001 -var vy 0.00192 -var vz 0.00473)

Which of those variables determine how many dump###.xyz and log.### files the task actually has to complete to finish?

I am hoping it is the loopnumber as 6668 will take about 15 days of CPU time. If it is dumpn 33340, then it will take about 75 days of CPU time.

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Message 977 - Posted: 18 Feb 2013, 14:47:30 UTC - in response to Message 971.

The parameters mean this simulation needs to run 3000*6668 steps, and each step of simulation takes about 0.14 seconds on a 1.5GFLOS CPU, so the total time is around 3000*6668*0.14 seconds, about 778 hours or 33 days.. This is one of the longest LAMMPS jobs. the deadline should be like 3 times of the estimated running time.

I have a long running Nano Tech task, and notice that every few minutes it writes a couple files in the slot directory it is in. These files are named as follows, incrementing 1 with each new file:

dump877.xyz
log.877
dump878.xyz
log.878

Looking at the command line in stderr.txt, I see the following:

20:19:10 (5032): wrapper: running start_lammps.exe ( -var restart 0 -in lammps_script -var looprun 3000 -var loopnumber 6668 -var thermon 3334 -var dumpn 33340 -var e_steps 0 -var l_script lammps_script -var vx 0.00001 -var vy 0.00192 -var vz 0.00473)

Which of those variables determine how many dump###.xyz and log.### files the task actually has to complete to finish?

I am hoping it is the loopnumber as 6668 will take about 15 days of CPU time. If it is dumpn 33340, then it will take about 75 days of CPU time.


____________
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Go CAS@home! We help scientists to race against time!

wenjing wu
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Message 978 - Posted: 18 Feb 2013, 14:47:31 UTC - in response to Message 971.

The parameters mean this simulation needs to run 3000*6668 steps, and each step of simulation takes about 0.14 seconds on a 1.5GFLOS CPU, so the total time is around 3000*6668*0.14 seconds, about 778 hours or 33 days.. This is one of the longest LAMMPS jobs. the deadline should be like 3 times of the estimated running time.

I have a long running Nano Tech task, and notice that every few minutes it writes a couple files in the slot directory it is in. These files are named as follows, incrementing 1 with each new file:

dump877.xyz
log.877
dump878.xyz
log.878

Looking at the command line in stderr.txt, I see the following:

20:19:10 (5032): wrapper: running start_lammps.exe ( -var restart 0 -in lammps_script -var looprun 3000 -var loopnumber 6668 -var thermon 3334 -var dumpn 33340 -var e_steps 0 -var l_script lammps_script -var vx 0.00001 -var vy 0.00192 -var vz 0.00473)

Which of those variables determine how many dump###.xyz and log.### files the task actually has to complete to finish?

I am hoping it is the loopnumber as 6668 will take about 15 days of CPU time. If it is dumpn 33340, then it will take about 75 days of CPU time.


____________
加油!CAS@home!我们帮助科学家跟时间赛跑!
Go CAS@home! We help scientists to race against time!

BobCat13
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Message 982 - Posted: 20 Feb 2013, 21:24:55 UTC - in response to Message 978.
Last modified: 20 Feb 2013, 21:26:09 UTC

Thanks for the info. 200 hours in and the progress appears to be about 57%.


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Message boards : Number crunching : Nano Tech Research actual progress tracking