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To: FreeBSD-users-jp@jp.freebsd.org, shibata@geo.titech.ac.jp
In-Reply-To: Your message of "Wed, 29 Jan 1997 22:43:15 +0900"
References: <199701291343.WAA06917@puutalo.geo.titech.ac.jp>
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Date: Wed, 29 Jan 1997 23:45:26 +0900
From: =?ISO-2022-JP?B?GyRCOzNLXBsoQg==?=  =?ISO-2022-JP?B?GyRCTFAbKEI=?=  <shigeru@iij.ad.jp>
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Subject: [FreeBSD-users-jp 9247] Re: performance on numerical calculationdependsonshells?
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>>>>> "$B>.NS(B" == Naoki Kobayashi <shibata@geo.titech.ac.jp> writes:
>> $B$O$d$$$O$J$7!"(Bshell$B$N0c$$0J30$K$O0[$J$k$3$H$,$J$$>u67$G7W$k$H$$$&$3$H$G$9!#(B
>> #$B$=$l$,0lHVFq$7$$$s$G$9$1$I$M(B(^^;)
$B>.NS(B> $B$`$7$m!V(Bshell $B0J30$K$O0[$J$k4D6-!W$G$b(B shell $B$K$h$k(B 1:2 $B$NHfN($,=P$k$3(B
$B>.NS(B> $B$H$KCm0U$7$F$/$@$5$j$?$$$N$G$9$,!%$3$N8=>]$O>/$/$H$b(B nbody.c $B$H$$$&%W(B
$B>.NS(B> $B%m%0%i%`$G$O(B robust $B$J8=>]$G$"$k$H$$$&$3$H$G$9!%(B

$B;d$,=q$$$?$h$&$K!":#$N$^$^$G$O30ItMW0x$,B?2a$.$F!";d$O$H$F$b!V(Brobust$B$J8=>]$@!W(B
$B$J$s$F8@$($^$;$s!#(B
$B>/$J$/$H$b!"%m%0%$%s%7%'%k$,(Btcsh$B$G(Bbash$B$r<B9T$7$F$+$i7W$C$F$$$k$N$K!"%m%0%$%s(B
$B%7%'%k$,(Bbash$B$G(Btcsh$B$r<B9T$7$?>l9g$r7W$i$:$K!"!V(Bshell$B$K$h$k:9$,$_$i$l$?!W$J$s(B
$B$F8@$($^$;$s!#(B
$B:GDc8B!"1|;3$5$s$,=q$$$F$$$k$h$&$J%F%9%H%W%m%0%i%`$G%F%9%H$9$kI,MW$,$"$j$^$9!#(B

>> $B$=$7$F!"(Bmalloc$B$r;H$C$?>l9g$K(Bshell$B$N0c$$$K$h$k:9$,8+$i$l$J$$$H8@$&$3$H$G!"(B
>> $B;d$J$i!"(Bshell$B$N0c$$$h$j$b%a%b%j$d%-%c%C%7%e$K4X$9$k$3$H(B($BNL!"4IM}$d3d$jEv(B
>> $B$F%"%k%4%j%:%`(B)$B$NJ}$r5?$$$^$9!#$=$7$F(BN$B$rJQ$($F$_$F7k2L$,$I$&$J$k$+$r8+$F(B
>> $B$_$^$9!#(B
$B>.NS(B> $B$3$l$bJQ$($F$d$C$F$*$j$^$9!%HfN($O$[$\(B 1:2 $B$rJ]$A$^$9!%G[Ns$NBg$-$5$H(B
$B>.NS(B> $B$7$F$O(B N*N*N $B$G$9$N$G!$(BN=10 $B$H(B 20 $B$G$O(B 8 $BG\$N0c$$$G$9!%(B[$BOG@12J3X$G$O$3(B
$B>.NS(B> $B$l$O(B order $B$r0c$($F$NHf3S$H8@$$$^$9(B(^^)] $B0lNc$G$9!%(B

$BHf$Y$?$N$O(BN=10,20$B$@$1$G$7$g$+(B?
$B$J$<(BN$B$rJQ$($FD4$Y$k$N$+$H8@$&$H!"%a%b%j%5%$%:$d%-%c%C%7%e%5%$%:$J$I$H$N4XO"(B
$B$rD4$Y$k$?$a$G$9!#(B
$B$@$+$i$=$l$K9g$o$;$F(BN$B$NCM$rA*$s$@$jA*$V?t$r9M$($kI,MW$,$"$j$^$9!#(B
$B!V(B20$B$NH>J,$G(B10$B$K$7$F$_$?$1$I7k2L$OJQ$o$i$J$+$C$?!W$H8@$&$N$G$OBLL\$G$9!#(B
N$B$K$h$C$F<B9T;~4V$N:9$KJQ$+$,$"$k$N$+$I$&$+$rD4$Y$k$o$1$G$9$+$i!"(BN$B$NCM$r%P%$(B
$B%J%jC5:w$7$F$_$k$0$i$$$O$d$i$J$$$H!#(B

$B$=$l$+$i!"(B

>> $B%a%b%j3dEv$N%"%k%4%j%:%`(B
>> $B%W%m%;%9$KBP$9$k%a%b%j3dEv$N%V%m%C%/%5%$%:(B
>> $B%W%m%;%9%9%$%C%A$N%"%k%4%j%:%`(B
>> $B%-%c%C%7%e%"%k%4%j%:%`(B
$B>.NS(B> $B$3$NJU$j$OITJY6/$GJ,$+$j$^$;$s(B(^^;

$B$d$C$F$$$k$3$H$+$i$9$k$H!"Hr$1$FDL$l$J$$$3$H$G$9!#(B
$B$3$N:]JY6/$9$k$3$H$r$*4+$a$7$^$9!#(B
$B$$$d$7$F2<$5$$!#(B
$B87$7$$$3$H$r8@$($P!"$3$l$i$N$3$H9MN8$KF~$l$:$K!"(B

$B>.NS(B> $BL\0B$H$7$F$O$=$&$G$9$,!$2f!9$NJ,Ln$KB($7$?LdBj$GB.EY$r7WB,$9$k$N$,B.$5(B
$B>.NS(B> $B$N<B46$H$7$F$OBg@Z$K$J$j$^$9!%(Bnbody.c $B0J30$K$O(B Runge-Kutta$BK!!$(BFFT, LU
$B>.NS(B> $BJ,2r(B, etc. $B$rHf3S$7$F$*$j$^$9!%(B

$B$H$$$C$?$3$H$r$$$/$i$d$C$F$b!"(BCPU$B$N@-G=$r7W$C$F$$$k$3$H$K$O$J$j$^$;$s!#(B
CPU+memory+cache+OS+etc$B$NAm9gE*$J@-G=$r7W$C$F$$$k$@$1$G$9(B:-)
$B$G$9$+$i!"$=$s$JCM$GHf3S$7$F$bL50UL#$G$9!#(B

$B$^$?$3$&$$$C$?$3$H$rCN$C$?>e$G%W%m%0%i%_%s%0$7$J$$$H!"<B837k2L$,=P$k$N$,0l=5(B
$B4V8e$K$J$k$+!"0lF|8e$+$HBg$-$J:9$,=P$k$3$H$K$J$j$+$M$^$;$s!#(B
----
$B;3K\(B $BLP(B	<shigeru@iij.ad.jp>				I hate UNICODE :-)
