Firefly and PC GAMESS-related discussion club

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Alex Granovsky
gran@classic.chem.msu.su

On Fri Nov 12 '10 2:45pm, GadievRadik wrote
-------------------------------------------
>Thanks, after disabling Hyper-threading in BIOS, firefly terminated normally. We start our calculation,results will be tomorrow.

>Regards,
>Gadiev Radik

>On Fri Nov 12 '10 11:07am, Alex Granovsky wrote
>-----------------------------------------------
>>Hi,

>>did you disable the core parking feature of Win2K8 R2?
>>It seems you do not, and you MUST do that, as there
>>is a bug in the OS kernel scheduler algorithm (common
>>to Win2K8 R2 and Windows 7; note that Win2K8 R1 does not
>>have this bug) that causes all the threads to be scheduled
>>to the single logical core. Please search forum to find how
>>this can be done. Alternatively, you can reboot with
>>Hyper-threading disabled in BIOS.

>>Regards,
>>Alex Granovsky
>>
>>
>>On Fri Nov 12 '10 9:53am, GadievRadik wrote
>>-------------------------------------------
>>>Hi, Firefly still froze calculation (out file in attach)
>>>On Thu Nov 11 '10 7:07pm, Alex Granovsky wrote
>>>----------------------------------------------
>>>>Hi,

>>>>the program does not hang - it simply slows down because
>>>>of severe resource over-subscription. Actually, you can find
>>>>the warning message near the beginning of the output.

>>>>The reason for over-subscription is that you are using very
>>>>non-trivial input file which you in addition have tried to
>>>>modify for your hardware configuration. However, the original
>>>>input was designed to run on the specific hardware configuration
>>>>and to get the most power of it. In particular, it affinitizes
>>>>different classes of threads; and the scheme it uses together
>>>>with your changes causes severe core over-subscription.

>>>>I've attached the template input file which I hope will be
>>>>much more suitable for your hardware configuration.

>>>>Regards,
>>>>Alex Granovsky
>>>>
>>>>
>>>>On Thu Nov 11 '10 12:09pm, GadievRadik wrote
>>>>--------------------------------------------
>>>>>Hi, Dr. Granovsky, sorry for the late reply.

>>>>>We just finished large MD simulation, and we totally ready to start FF8 calculations.

>>>>>I first step we run simple input file. Firefly8 correctly detect all tesla card and run calculation, but after several steps, calculation froze without any error messages (see attach).  

>>>>>Regards, Gadiev Radik

>>>>>On Sun Nov 7 '10 11:57pm, Alex Granovsky wrote
>>>>>----------------------------------------------
>>>>>>Hi Radik,

>>>>>>any news on your experiments with updated Firefly binaries?

>>>>>>Regards,
>>>>>>Alex Granovsky
>>>>>>
>>>>>>
>>>>>>On Wed Oct 27 '10 10:57am, GadievRadik wrote
>>>>>>--------------------------------------------
>>>>>>>Hello,
>>>>>>>I disable TDR feature, but still have same error in out file.

>>>>>>>I tested system with latest hoomd-blue, it works perfect.
>>>>>>>I guess, this due to the altered architecture of Fermi card.
>>>>>>>Full support of this card start since cudatoolkit 3.1 release.

>>>>>>>Thanks, Radik

>>>>>>>On Tue Oct 26 '10 6:50pm, Alex Granovsky wrote
>>>>>>>----------------------------------------------
>>>>>>>>Hello,

>>>>>>>>Teslas are labeled as not useable in the output because CUDA driver
>>>>>>>>reports that there is an OS imposed limit on the execution
>>>>>>>>of individual kernel. I do not think this is actually the case
>>>>>>>>as Tesla is not a graphics card. While this is most likely just
>>>>>>>>the driver's misreport, you have two options how to proceed.
>>>>>>>>Namely, you can either completely disable the TDR feature
>>>>>>>>via registry, or contact me off the list for the updated binaries.

>>>>>>>>Regards,
>>>>>>>>Alex Granovsky
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>On Tue Oct 26 '10 1:10pm, GadievRadik wrote
>>>>>>>>-------------------------------------------
>>>>>>>>>Does firefly 7.1G support calculation on latest Nvidia Fermi cards?
>>>>>>>>>When i try run firefly on 3x tesla c2050, in out file cards labled as unsupported.

>>>>>>>>>System Win Server 2009 r2
>>>>>>>>>2x intel Xenon
>>>>>>>>>3x Nvidia Tesla c2050
>>>>>>>>>Cuda toolkit 2.3 and 3.2 installed both 32 and 64 bit installed.
>>>>>>>>>All cuda tests passed.

>>>>>>>>>Thanks