Posts by John B. Kalla

1)

Message boards : Cafe Docking : GoodBye Andre

( Message 3217 )
Posted 3753 days ago by Profile John B. Kalla
This seems to be the most likely candidate: http://www.vansaircraft.com/public/rv-9int.htm
Don't you just love the looks of this plane...

Cheers
Andre


I like the Vans a lot! I always wanted to build a Velocity, but could never afford it...
2)

Message boards : Cafe Docking : GoodBye Andre

( Message 3214 )
Posted 3753 days ago by Profile John B. Kalla
I agree that's it's too bad you're moving to the East coast, but I bet it'll be nice to see some trees!

Andre, are you actually building a plane? Which one? I haven't flown since 1991, and I miss it!
3)

Message boards : Number crunching : Issues with Charmm 5.07

( Message 3194 )
Posted 3754 days ago by Profile John B. Kalla
John,

I assume, that when you say 1 proc enabled, there is one charmm process running on your machine (you can check using the top command in a terminal), when you enable 3 processors, you see 3 charmm processes running using 99% of 3 of your cpu's and when you enable all of them, you see 4 charmm processes running. Correct?

If this is the case, I don't understand why your execution times are going up so much; if I do the same experiment on a smp linux box, both processes finish in about the same time as one would do when running alone on the machine.

Thanks
Andre

MacPro 2.66GHz Xeon(four cores), MacOS X 10.4.9, BOINC 5.8.17:

2162 floating point MIPS/CPU
6673 integer MIPS/CPU

Came up with the same result whether I enabled one proc or four. Times to complete charmm 5.07 units:

1 proc enabled: 3.5hrs
3 procs enabled: 5.3hrs
4 procs enabled: 11-12hrs



Yes, that's correct. All charmm processes finish at about the same time. It's just that the time increases with the more processors I enable. Very weird...
4)

Message boards : Number crunching : Issues with Charmm 5.07

( Message 3178 )
Posted 3755 days ago by Profile John B. Kalla
MacPro 2.66GHz Xeon(four cores), MacOS X 10.4.9, BOINC 5.8.17:

2162 floating point MIPS/CPU
6673 integer MIPS/CPU

Came up with the same result whether I enabled one proc or four. Times to complete charmm 5.07 units:

1 proc enabled: 3.5hrs
3 procs enabled: 5.3hrs
4 procs enabled: 11-12hrs
5)

Message boards : Number crunching : Issues with Charmm 5.07

( Message 3149 )
Posted 3757 days ago by Profile John B. Kalla
Wow. Maybe it's something to do with my setup, then. I'm pretty sure my prefs are set correctly, now that I enabled more than 2 procs (last month)...

Andre, I emailed you a copy of the files (currently I'm at 11.5hrs @ 95%).
6)

Message boards : Number crunching : Issues with Charmm 5.07

( Message 3130 )
Posted 3757 days ago by Profile John B. Kalla
MacOS X 10.4.9, BOINC 5.8.17:

Before: One workunit ~1.6hrs
Last week: One workunit ~11hrs
Today: One workunit ~12.4hrs (estimated, as I'm at 41% and 04:57) (Charmm 5.07)

Slower than last week. Yikes!
7)

Message boards : Number crunching : AMD64

( Message 3112 )
Posted 3758 days ago by Profile John B. Kalla
Wow! Makes me glad I don't play games! My electric bill is high enough!
8)

Message boards : Number crunching : HUGE Slowdown Intel Mac

( Message 3068 )
Posted 3768 days ago by Profile John B. Kalla
Lately, in the past week or two, I've noticed a huge slowdown in the processing of workunits. My computer is not running at the percentage that it used to, though that doesn't account for the 5X+ amount of time it's now taking me to complete a workunit. I've tried (multiple times):

1) Trashing BOINC and starting over.
2) Installing an older version of BOINC, 5.8.16, thinking possibly that was the problem, even though I know 5.8.17 was working fine.

I'm not really sure what else to do. I believe this may stem from a preference change somewhere, though I can't see any issues with my settings. Any ideas? Have the workunits changed?

Old processing time: ~1.6hrs/workunit
New processing time: ~11hrs/workunit


@John, I'm sure this is a result of the 5.05 WUs. I don't think you can do anything to your IntelMAC until the project resolves the issue.

You can look at Conan's 1569 and see that it doubled the time to process WUs from 5.04 to 5.05.

My Intel Duals on Linux were barely affected......something like 30 minutes longer.

My 64-bit Linux Opterons won't run 5.05s........they were running 5.04s perfectly.



Yikes. I just realized you were talking about WUs, not BOINC version!

OK. Thanks!
9)

Message boards : Number crunching : HUGE Slowdown Intel Mac

( Message 3066 )
Posted 3768 days ago by Profile John B. Kalla
Lately, in the past week or two, I've noticed a huge slowdown in the processing of workunits. My computer is not running at the percentage that it used to, though that doesn't account for the 5X+ amount of time it's now taking me to complete a workunit. I've tried (multiple times):

1) Trashing BOINC and starting over.
2) Installing an older version of BOINC, 5.8.16, thinking possibly that was the problem, even though I know 5.8.17 was working fine.

I'm not really sure what else to do. I believe this may stem from a preference change somewhere, though I can't see any issues with my settings. Any ideas? Have the workunits changed?

Old processing time: ~1.6hrs/workunit
New processing time: ~11hrs/workunit
10)

Message boards : Number crunching : Issues with new HR algorithm

( Message 3064 )
Posted 3768 days ago by Profile John B. Kalla
@John

The short answer is NO, HR should not have an effect on the runtime...

Happy Crunching,

-- David



Wow! Thanks, David! I appreciate the answer.


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