Date: Fri, 4 Nov 2011 10:53:22 -0400 From: Arnaud Lacombe <lacombar@gmail.com> To: lev@freebsd.org Cc: Nate Dobbs <misconfiguration@gmail.com>, Greg 'groggy' Lehey <grog@freebsd.org>, Aleksandr Rybalko <ray@freebsd.org>, hackers@freebsd.org, Lars Engels <lars.engels@0x20.net> Subject: Re: Porting FreeBSD to Raspberry Pi Message-ID: <CACqU3MU_KansgEPyu8e-T9eCrNYML=5=tfKhzLHCv7BPemDTiw@mail.gmail.com> In-Reply-To: <1101963570.20111104135610@serebryakov.spb.ru> References: <20111103092222.GN37036@e-new.0x20.net> <20111103155802.7bfc1df0.ray@freebsd.org> <CACqU3MWo%2B2PAqdm71rvsh4f09-nBCnLi7s-VaZo8iHd92L8q_w@mail.gmail.com> <CAGjvUo6UpcsiTa-cyGM_Q_Em-9WOJLqM%2Bn_U6exJy_w2z%2B52RQ@mail.gmail.com> <CACqU3MU5zdfuymo4JZn3JMT2=AARhwbc%2BrY3jTVzX8bD=aJnfA@mail.gmail.com> <20111104004007.GA74831@dereel.lemis.com> <CACqU3MVk47XAMvwSSie9nj%2BegFVXMnGCGMphqxuuHhKi=sVx2A@mail.gmail.com> <20111104015559.GE74831@dereel.lemis.com> <CAGjvUo6q3qYe40JpzgLK9ULUHQ2fR1X6uzB=mG3P5rq6_DWd2w@mail.gmail.com> <CACqU3MVVV=rBz4EyzF5LL8da8TO9iAG5ppa6o=0SrxswUMQ_4Q@mail.gmail.com> <1101963570.20111104135610@serebryakov.spb.ru>
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Hi, 2011/11/4 Lev Serebryakov <lev@freebsd.org>: > Hello, Arnaud. > You wrote 4 =D0=BD=D0=BE=D1=8F=D0=B1=D1=80=D1=8F 2011 =D0=B3., 6:30:18: > >> $89, 700MHz Cortex A8, 256MB DRR2, micro-SD. However, do not expect >> being able to run FreeBSD on it before a few years :) > =C2=A0What is so special about A8? We have some ARM code in tree, is Cort= ex > SO different from previous architectures? As far as I understand, main > problem in such platforms is different perefireal devices on each next > chop and board, which doesn't have "common denominator" like PCI bus > or other standard pieces, which helps a lot on PC (x86, amd64) architectu= re. > > =C2=A0BTW, we have infrastructure for crypto accelerators ;-) > Yes, my bad. > =C2=A0And what about NUMA... I know only one (almost-general-purpose) OS, > which has full support for NUMA. It is Sun^WOracle Solaris. Ant it > does it very well (not to forget about boxes like SunFire 25K with 72 > 2-core sockets at, as fa as I remember, 18 processor-memory boards). > > =C2=A0 =C2=A0I participated in project, which added NUMA support to Sun J= VM > HotSpot, and Solaris was only one which gives us all needed > information -- nor Linux nor =C2=A0Windows either had not needed API two > years ago, and as far as I know, there is no big changes in this area > for them (but I could be wrong). > FWIW, referring to the technology two years ago in computer science is just like referring to the Prehistory to make a point about mankind today :/ - Arnaud
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