[mesa-users] interp_2d thread safety

[Bill Paxton]

Hi Aaron,

I'm taking a break from the Super Bowl halftime show to answer your email!.

Rob got it right.  You should be okay as long as you are careful in the calling OpenMP loop to declare things private that need to be defined separately for each thread.

Cheers,
Bill

btw: perhaps you have become an Aussie and no longer remember, but the Super Bowl is a big annual festival of silliness in the US. featuring many commercials for beer and action movies.


On Feb 7, 2016, at 4:48 PM, Aaron Dotter wrote:

> Hi Rob,
> 
> Thanks for that.  My imperfect knowledge here: The function data input to the routine is "intent(inout)" which makes me suspicious.  That's the only red flag for me.
> 
> If I don't get a conclusive answer here, I'll make a dedicated test and report back.
> 
> Aaron
> 
> 
> On Mon, Feb 8, 2016 at 11:45 AM, Robert Farmer <rjfarmer at asu.edu> wrote:
> Hi
> I've not tested it myself, but presumably all you need to check is that nothing being read/write by one thread that can be read/write by another thread. As there are no module level variables, save variables or common blocks that seems the case.
> 
> Rob
> 
> On Sun, Feb 7, 2016 at 5:19 PM, Aaron Dotter <aaron.dotter at gmail.com> wrote:
> Hi mesa-users,
> 
> Here is an esoteric question: Does anyone have actual working knowledge that the interpolation routines in the interp_2d module are thread-safe / OpenMP friendly?  I'm specifically interested in the interp_evbicub_sg/db routines, which I'm using in another project.
> 
> I (naively?) assumed that they are but it's not tested in the module-level test code nor is it used within a parallel loop elsewhere in MESA.  So I thought I'd ask.
> 
> If no knows for sure, I'll test it.
> 
> 
> Thanks!
> Aaron
> 
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