Date: Sun, 10 May 2015 09:24:34 +0800 From: Lei Zhang <zhanglei.april@...il.com> To: john-dev@...ts.openwall.com Subject: Re: Adding OpenMP support to SunMD5 > On May 10, 2015, at 2:26 AM, magnum <john.magnum@...hmail.com> wrote: > > On 2015-05-09 16:39, Lei Zhang wrote: >> Dynamic arrays have slower accessing than static arrays. > > Is that necessarily a fact? Why? Not necessary, but sometimes. The base address of a dynamic array must be determined at run time, while the address of a static array can be determined at compile time. For a static array, when accessing some element, say a, the compiler can compute this address at compile time. For a dynamic array, however, the computation of this address has to happen at run time. If the index is a dynamic value, the two should have same performance though. Lei
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