# Do concurrent: can loop variable be specified in \`local\`?

**URL:** <https://fortran-lang.discourse.group/t/do-concurrent-can-loop-variable-be-specified-in-local/8396>\
**Category:** Help\
**Created:** [July 27, 2024, 11:16am UTC](https://fortran-lang.discourse.group/t/do-concurrent-can-loop-variable-be-specified-in-local/8396 "2024-07-27T11:16:59Z")\
**Posts on this page:** 1\
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**Author:** ![ivanpribec](https://yyz2.discourse-cdn.com/free1/user_avatar/fortran-lang.discourse.group/ivanpribec/32/3290_2.png) [@ivanpribec](https://fortran-lang.discourse.group/u/ivanpribec)\
**Post date:** [July 29, 2024, 9:00am UTC](https://fortran-lang.discourse.group/t/do-concurrent-can-loop-variable-be-specified-in-local/8396/10 "2024-07-29T09:00:27Z")

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> [@Shahid](#):
>
> Do compilers must always conform to the standards?

It’s important if you want to write portable programs. As you may know, the Intel Fortran compilers can’t be used on all hardware: [Intel Fortran on Snapdragon chips](https://fortran-lang.discourse.group/t/intel-fortran-on-snapdragon-chips/8362)

Imagine being a handyman and buying an expensive set of wrenches. But when you come to the job, the bolts don’t fit. Either you’ll need to buy/borrow a different set of wrenches, or use a different set of bolts. In both cases it will cause extra costs or delays.

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