[MetaCRS] Re: RFC #5 -- Multi-thread upgrade

[Paul Nalos]

On behalf of Safe Software, I'd like to express our "+1" for this
proposal. (We're not part of the PSC.)

These improvements would be a significant benefit to us and our users,
and I'm comfortable with the trade-offs involved.

We'd plan to integrate the new functionality into our product (FME)
and test environment, with a focus on raster and LiDAR reprojection,
where the performance gains would be most pronounced.

I have one minor comment on the proposal. Quoting narrowly:

> Unless the file is buffered in its entirity, the object becomes non-reentrant.

I'm convinced there are other options for providing partial buffering
while maintaining reentrancy (involving some kind of locking or
critical section), but am comfortable with the memory and performance
cost of fully caching all grid files in use.

Regards,

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Paul Nalos | Database Team Lead

Safe Software Inc.
T 604.501.9985 x 301
paul.nalos at safe.com | www.safe.com

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> I have posted an RFC to http://trac.geo.org/csmap concerning an upgrade to CS-MAP with regard to its ability to function in a multi-threaded environment:
>
>                http://trac.osgeo.org/csmap/wiki/CsMapRfc5
>
> Please review and comment as soon as is convenient for you.
>
> Thanks a lot.
>
> Norm