[FLASH-USERS] disable check pointing

[Mike Zingale]

yes.


On Fri, 18 Jan 2008, Brock Palen wrote:

> 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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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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