Hi all,
Any suggestions on this are most helpful.
Thanks and regards,
Aritra
On Thu, Oct 6, 2022 at 6:01 PM Aritra Bagchi <bagchi95ari...@gmail.com>
wrote:
> Hi all,
>
> *for (i = 0; i < 1000; i++) {*
> * j = j + A[ i ]*
> *}*
>
> Suppose such a loop program is executed on gem5 (single-core execution,
> with O3 CU model). In that case, the memory hierarchy gets to see only one
> access at a time, e.g. only after A[ k ] is completed, A [ k + 1 ] access
> is sent to the memory hierarchy. Whereas, if the loop is unrolled (on i),
> multiple memory accesses are seen simultaneously. Why is that so? The
> memory loads could be serviced independently (even without unrolling the
> loop), so why is gem5 taking such a conservative approach?
>
> Any form of help/suggestion is highly appreciated.
>
> Thanks and regards,
> Aritra Bagchi
> Research Scholar,
> Department of Computer Science and Engineering,
> Indian Institute of Technology Delhi
>
>
>
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