(j3.2006) (SC22WG5.4113) Standard intrinsics and coarrays (NOT random numbers)

[Bill Long]

N.M. Maclaren wrote:
> Here is an alternative, that I think takes on board Bill's and Van's 
> comments. It does not include the random number issues.
> 
> 
> In 13.5, Standard generic intrinsic procedures, after Table 13.1, add
> the new paragraphs:
> 
>     The effects of calling COMMAND_ARGUMENT_COUNT, EXECUTE_COMMAND_LINE,
>     GET_COMMAND, GET_COMMAND_ARGUMENT, GET_ENVIRONMENT_VARIABLE on any
>     image other than image 1 are processor dependent.

I'd add "or" before "GET_ENVIRONMENT_VARIABLE" here and in the Annex A 
edit.  Otherwise, this looks fine.

Cheers,
Bill


> 
> [ I dithered over "effects of calling" versus "results returned from",
> but decided that the former was better because one plausible
> implementation of these on other images is by a message and response
> handshake to image 1. ]
> 
>     < Random numbers will be mentioned separately >
> 
>     It is processor dependent whether the results returned from
>     CPU_TIME, DATE_AND_TIME and SYSTEM_CLOCK are dependent on which
>     image calls them.
> 
>     NOTE 13.x
>     This means that it is unspecified whether images use synchronized
>     clocks, whether CPU_TIME returns a per-image or per-program value,
>     whether all images run in the same time zone and whether the count
>     rate and maximum in SYSTEM_CLOCK are the same for all images.
> 
>     The use of all other standard intrinsic procedures in unordered
>     segments is subject only to their argument use following the rules
>     in 8.5.2.
> 
> 
> In A2, Processor Dependencies, after "how the sequences of atomic
> actions in unordered segments interleave (13.1)", add the new bullet
> points:
> 
>     * The effects of calling COMMAND_ARGUMENT_COUNT,
>       EXECUTE_COMMAND_LINE, GET_COMMAND, GET_COMMAND_ARGUMENT,
>       GET_ENVIRONMENT_VARIABLE on any image other than image 1 (13.5);
> 
>     * whether the results returned from CPU_TIME, DATE_AND_TIME and
>       SYSTEM_CLOCK are dependent on which image calls them (13.5);
> 
> 
> Regards,
> Nick Maclaren.
> 
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-- 
Bill Long                                   longb at cray.com
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