[FLASH-USERS] disable check pointing

[Brock Palen]

Will this kill the plot files though?

Brock Palen
Center for Advanced Computing
brockp at umich.edu
(734)936-1985


On Jan 18, 2008, at 2:04 PM, Mike Zingale wrote:

> you can use the io/null module to completely disable I/O (or  
> atleast, you used to be able to).  Specify this in your Modules file.
>
>
> On Fri, 18 Jan 2008, Brock Palen wrote:
>
>> Ok I will try setting them all to -1,
>>
>> The run just crashed trying to write checkpoint_002
>> It segfault'ed when the file size was 2.2 GB.  We were using HDF5  
>> serial, on luster.
>>
>> Thanks,
>>
>> Brock Palen
>> Center for Advanced Computing
>> brockp at umich.edu
>> (734)936-1985
>>
>>
>> On Jan 18, 2008, at 1:17 PM, John ZuHone wrote:
>>
>>> Brock,
>>>
>>> 	I think that if you want no checkpoints at all you should set  
>>> trstrt < 0, and make sure that nrstrt < 0 (integer) and zrstrt <  
>>> 0 as well.
>>> Best,
>>> John ZuHone
>>> On Jan 18, 2008, at 8:56 AM, Brock Palen wrote:
>>>> For parallel runs even if I set
>>>> trstrt=0
>>>> two checkpoint files were written.
>>>> [ 01-17-2008  23:51.27 ] message: [CHECKPOINT_WR] NOTE: will  
>>>> send 10     blocks per message.
>>>> [ 01-17-2008  23:51.29 ] file_wr_open: type=checkpoint  
>>>> name=Ni_Tem_hdf5_chk_0000
>>>> [ 01-17-2008  23:52.30 ] file_wr_close: type=checkpoint  
>>>> name=Ni_Tem_hdf5_chk_0000 blocks=5449
>>>> [ 01-17-2008  23:52.32 ] file_wr_open: type=plotfile  
>>>> name=Ni_Tem_hdf5_plt_cnt_0000
>>>> [ 01-17-2008  23:52.36 ] file_wr_close: type=plotfile  
>>>> name=Ni_Tem_hdf5_plt_cnt_0000
>>>> [ 01-17-2008  23:52.36 ] [FLASH]: Enter evolution loop...
>>>> [ 01-17-2008  23:52.36 ] step: n=1 t=0.000000E+00 dt=1.000000E-16
>>>> [ 01-17-2008  23:59.26 ] file_wr_open: type=checkpoint  
>>>> name=Ni_Tem_hdf5_chk_0001
>>>> [ 01-18-2008  00:00.13 ] file_wr_close: type=checkpoint  
>>>> name=Ni_Tem_hdf5_chk_0001 blocks=5449
>>>> No other checkpoint files have been written so far,  though  
>>>> several plot files have been written.  Is this expected behavior?
>>>> Flash2.5 + pgi +openmpi-1.2.3
>>>> hdf5/serial
>>>> Brock Palen
>>>> Center for Advanced Computing
>>>> brockp at umich.edu
>>>> (734)936-1985
>>
>
>
> ---------------------------------------------------------------------- 
> -------
> Michael Zingale (mzingale at mail.astro.sunysb.edu)
> Assistant Professor
>
> Dept. of Physics and Astronomy     office: ESS 440
> SUNY Stony Brook                   phone:  631-632-8225
> Stony Brook, NY 11794-3800         web: http://www.astro.sunysb.edu/ 
> mzingale
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