Re: [Scalablecr-discuss] Fortran bindings for SCR

[Wadud M. <w....@qm...>]

Hi Adam,

>From what I understand, the SCR library checkpoints synchronously. Do you think it can be updated to write checkpoints asynchronously? I think asynchronous checkpoint scheme is still sort of synchronous as a single checkpoint can be written one at a time, so it has to wait at a barrier at the next checkpoint. Perhaps this can be user configured. 

I like how the library has been developed by prefixing all subroutine names with "SCR_". I like this practise and this is how the Hypre linear solver library has been written. 

Regards,
Wadud.

-----Original Message-----
From: Wadud Miah [mailto:w....@qm...] 
Sent: 18 August 2014 10:56
To: Adam T. Moody
Cc: sca...@li...
Subject: Re: [Scalablecr-discuss] Fortran bindings for SCR

Hello Adam,

Thanks so much for all your help. Is the version in Github the latest, i.e. 1.1.8? 

Regards,

-----Original Message-----
From: Adam T. Moody [mailto:mo...@ll...] 
Sent: 16 August 2014 00:05
To: Wadud Miah
Cc: sca...@li...
Subject: Re: [Scalablecr-discuss] Fortran bindings for SCR

Hi Wadud,
Great, that helps.  We're overdue for making an official 1.1-8 release, 
so I'm glad you pulled the latest from github.

pdsh is required in the scavenge phase.  This is run from the 
scr_postrun script in order to copy files from /tmp to the parallel file 
system in the event of a failure.  This is some functionality that would 
need to be ported if you don't have it available on your system.
-Adam


Wadud Miah wrote:

>Hi Adam,
>
>I obtained the latest version from git which contains the Fortran bindings. I noticed that configure worked even though I do not have pdsh installed. Will SCR still work without PDSH?
>
>Thanks for your help.  
>
>-----Original Message-----
>From: Wadud Miah [mailto:w....@qm...] 
>Sent: 15 August 2014 22:15
>To: Adam T. Moody
>Cc: sca...@li...
>Subject: Re: [Scalablecr-discuss] Fortran bindings for SCR
>
>Hello Adam,
>
>Thanks for your reply. I cannot find the libscrf.so library and neither the example Fortran program examples/test_ckpt.F in my installation of version of 1.1.7. I had a look at the configure options and there is nothing there to indicate the building for the Fortran bindings. Which version do you have? I also assigned the environment variable F77 to ifort. 
>
>Regards,
>Wadud.
>
>-----Original Message-----
>From: Adam T. Moody [mailto:mo...@ll...] 
>Sent: 15 August 2014 21:09
>To: Wadud Miah
>Cc: sca...@li...
>Subject: Re: [Scalablecr-discuss] Fortran bindings for SCR
>
>Hi Wadud,
>I forgot to mention that you need link Fortran apps to -lscrf instead of 
>-lscr.
>
>It's also helpful to look at the examples/test_ckpt.F for an example and 
>see the makefiles.example for instructions on how it was compiled and 
>linked.
>-Adam
>
>
>Adam T. Moody wrote:
>
>  
>
>>Hi Wadud,
>>Fortran 77 bindings are available in src/scrf.c and src/scrf.h.  They 
>>are modeled after the Fortran bindings used for MPI, so if you're 
>>familiar with MPI calls from Fortran, SCR calls will look familiar.  All 
>>functions are invoked with captial letters, and each function returns an 
>>error code of type INTEGER in its last argument.  You sould be able to 
>>include scrf.h in your Fortran application and make calls to SCR functions.
>>
>>It's been a while since I've tested those, though, so let me know if you 
>>hit any problems.
>>-Adam
>>
>>
>>Wadud Miah wrote:
>>
>> 
>>
>>    
>>
>>>Hello,
>>>
>>>Will Fortran bindings be available for SCR?
>>>
>>>Regards,
>>>
>>>-------------------------------------------
>>>Wadud Miah
>>>Research Computing Services (HPC)
>>>
>>>
>>>
>>>
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