Re: [Gems-users] Stall time

[Dan Gibson <degibson@xxxxxxxx>]

That is exactly how ruby implements it. I don't know if its the only 
way, but it works well.
Regards,
Dan

pathscale@xxxxxxx wrote:
> Thanks, Dan.
> But I wonder how ruby implement it.
> Is it by using API SIM_time_post_cycle in function "runRubyEventQueue" ?
> Is it the only way to wake up ruby every SIMICS_RUBY_MULTIPLIER cycles 
> and run it indepently?
> Thanks
>
> 在2008-04-05，"Dan Gibson" <degibson@xxxxxxxx> 写道：
>
>     No, but Ruby runs every SIMICS_RUBY_MULTIPLIER cycles independently of 
>     whether any new memory requests are presented to Ruby.
>     Regards,
>     Dan
>
>     pathscale@xxxxxxx wrote:
>     > Thanks.
>     > Does it mean that even you stall a memory transaction with stall time 
>     > 200000000000
>     > It will come to timing-model again next cycle, anyway?
>     >
>     > 在2008-04-04，"Dan Gibson" <degibson@xxxxxxxx> 写道：
>     >
>     >     Often, a memory stall time is not known at request-time. In this
>     >     case, Ruby stalls Simics for a long long long time, but un-stalls
>     >     it when Ruby determines its coherence actions have been completed.
>     >
>     >     Regards,
>     >     Dan
>     >
>     >     pathscale wrote:
>     >>     Hi,
>     >>     I'm studying ruby's core and I'm curious about how a memory
>     >>     transaction can be returned with stall time like this:
>     >>     { Miss , SIMICS_STALL_TIME},
>     >>     which is to say an infinite stall time.
>     >>     I don't know in what condition this is supposed to happen.
>     >>     Thanks
>     >>
>     >>
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