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To: FreeBSD-users-jp@jp.freebsd.org, okuyama@trl.ibm.co.jp
In-Reply-To: Your message of "Wed, 29 Jan 1997 22:49:46 +0900"
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Date: Thu, 30 Jan 1997 00:17:58 +0900
From: "Naoki Kobayashi" <shibata@geo.titech.ac.jp>
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Subject: [FreeBSD-users-jp 9250] Re: performance on numerical calculation
	 dependson shells?
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$B>.NS!wCOOG!%El9)Bg$G$9!%(B

From: Kenichi Okuyama <okuyama@trl.ibm.co.jp>
Subject: [FreeBSD-users-jp 9242] Re: performance ...
Date: Wed, 29 Jan 1997 22:49:46 +0900

> $B1|;3!w#I#B#M$G$9!#(B
> >>>>> "$B>.NS(B" == Naoki Kobayashi <shibata@geo.titech.ac.jp> writes:
> $B>.NS(B> $B!N<ALd$NMWE@!O(B
> $B>.NS(B> $B?tCM7W;;B.EY$O(B shell $B$K$h$C$F(B 2 $BG\DxEYJQ$o$j$&$k$+!)JQ$o$k$H$7$F$=$NM}(B
> $B>.NS(B> $BM3$r65$($F2<$5$$!%(B
> 
> shell $B$K$h$kB.EY:9$OIaDL$"$jF@$^$;$s!#FC$K$3$NNc$N$h$&$K(B foreground 
> $B$G<B9T$7$F$$$k>l9g$K!"(Breal sec $B$G(B 50 $BIC$b$A$,$&$H$J$k$H0[>o>uBV$G$9!#(B

$B;d$b(B shell $B$K$h$kB.EY:9$,$"$k$H$O;W$C$F$$$^$;$s$G$7$?!%$G$O0[>o>uBV$J(B
$B7W;;5!$r;H$C$FO@J8$r=q$$$F$$$?$s$G$9$M(B(^^)

> $B$H$j$"$($:!"$=$&$$$&$3$H$OK:$l$F!"LdBjE@$rNs5s$7$^$9!#(B

$B;d$,=q$$$?$b$N$G$O$"$j$^$;$s$,(B code $B$N(B tuning $B$^$G9M$($F$$$?$@$-$^$7$F(B
$B$9$$$^$;$s!%(B

> $B5pBg$JG[Ns$r(B stack $B$K<h$C$F$$$k$3$H$KLdBj$,$"$k$H$*$b$$$^$9!#(B
> stack $B$O!"4pK\E*$K5/F0;~$K$O$"$k0lDjNL$G<h$C$F$*$j!"$=$l0J>e$NNL$rMW(B
> $B5a$5$l$k>l9g$O(B segmentation fault $B$r8!=P$7$F!"(Bstack area size $B$r3HD%(B
> $B$9$k!"$H$$$&=hM}$r7+$jJV$7$F$$$k$O$:$G$9!#%"%/%;%9=g=x$K$h$C$F!"$3$N(B
> $B3HD%$,$a$A$c$a$A$c$J=g=x$GH/@8$7$F$7$^$$$^$9!#$3$N$h$&$J>l9g?tCM7W;;(B
> $B$h$j$b(B $B2>A[6u4V$N4IM}$N$[$&$KB?$/$N(B CPU time $B$r<h$i$l$+$M$^$;$s!#(B

$B$3$l$O(B shell $B$N(B limit stacksize $B$GJQ$($i$l$k$b$N$r;X$7$F$$$k$N$G$7$g$&(B
$B$+!%$=$l$rJQ$($?>l9g$N7k2L$N0lNc$G$9!%(B

tcsh% limit stacksize unlimited
tcsh% limit
cputime         unlimited
filesize        unlimited
datasize        65536 kbytes
stacksize       65536 kbytes
coredumpsize    unlimited
memoryuse       29512 kbytes
descriptors     64 
memorylocked    9838 kbytes
maxproc         40 
tcsh% cc -O2 -DRUN -DN=20 nbody.c -lm -o nbody
tcsh% /usr/bin/time ./nbody
      106.22 real       104.73 user         0.04 sys
bash# /usr/bin/time ./nbody
       51.50 real        50.82 user         0.03 sys

stacksize $B$H$O4X78$"$j$^$;$s$,!$<B9TD>A0$KB>$K(B CPU 40% $BDxEY$N%W%m%;%9(B
$B$,Av$C$F$$$k>l9g$N7WB,$N0lNc$G$9!%(B(HOST, OS version $B$b0[$J$j$^$9!%(B)

tcsh% cc -O2 -DRUN -DN=20 nbody.c -lm -o nbody
tcsh% /usr/bin/time ./nbody
      154.26 real        55.51 user         0.00 sys
bash$ /usr/bin/time ./nbody
      311.40 real       111.51 user         0.02 sys

user time $B$G8+$?>l9g(B($B$3$NNc$G$O(B bash $B$NJ}$,CY$$$,(B) shell $B$N0c$$$K$h$k(B
$BHfN((B 1:2 $B$O0];}$5$l$F$$$^$9!%(B

From: Kenichi Okuyama <okuyama@trl.ibm.co.jp>
Subject: [FreeBSD-users-jp 9245] Re: performance ...
Date: Wed, 29 Jan 1997 23:06:41 +0900

> $B>.NS(B> $B?H6a$J(B P6 + FreeBSD $B$N4D6-(B($B#3Bf$"$k(B)$B$G$OA4$F(B 32MB non parity, 60ns $B$G(B
> $B>.NS(B> $B$9!%@=IJ(B($B@=B$85!&7?(B)$B$OB?J,0c$$$^$9$,!%(BLinux $B$O(B Dual $B$G(B parity $BIU$-$N%a(B
> $B>.NS(B> $B%b%j!<$G$9!%(B
> >> $B%-%c%C%7%e%5%$%:(B(P6/200MHz$B$N>l9g!"(B512K$B$N$b$N$H(B256K$B$N$b$N$,$"$k(B)
> $B>.NS(B> $B%-%c%C%7%e$OA4$F(B 256K $B$G$9!%(B
> 
> $B$3$&$$$&OC$,$"$j$^$9!#(B
> 
> REXX $B$N$h$&$J%$%s%?!<%W%j%?!<$r$O$8$a$H$7$F!"B?$/$N%a%b%j!<$r;H$&%W(B
> $B%m%0%i%`$N>l9g!"5pBg$J%a%b%j$r;}$A!"%-%c%C%7%e$,>.$5$$$H!"$=$l$@$1$G(B
> $B<B%a%b%j$H%-%c%C%7%e$H$N%R%C%HN($,2<$,$k!#(B
> 
> $B$3$N$?$a!"%-%c%C%7%e$,>.$5$$$H!"<B%a%b%j$rA}$d$7$F$b$+$($C$FCY$/$J$k(B
> $B$3$H$,$"$k!J$b$A$m$s!"$3$l$O<B%a%b%j$,!V>/$7!WA}$($k$@$1$N>l9g$K8B$j(B
> $B$^$9!K(B

$B=q$-K:$l$^$7$?$,(B Dual P6 + Linux machine $B$N%a%b%j!<$O(B 512MB $B$r<BAu$7$F(B
$B$$$^$9!%$3$N>l9g$N7WB,$N0lNc$O0J2<$NDL$j$G$9!%(BDual P6 $B$r(B time $B%3%^%s%I(B
$B$G7W$C$?>l9g$N(B user $BI=<($OJQ$G$9$,!$B>$K=E$$%W%m%;%9$,Av$C$F$J$$;~$N7W(B
$BB,Nc$G$9$N$G!$(Breal time $B$GHf3S$7$F2<$5$$!%$d$O$jLs(B 1:2 $B$NHfN($O0];}$5(B
$B$l$F$$$^$9!%(B

tcsh% ./time nbody
       42.53 real         1.19 user        41.35 sys
tcsh% bash
bash$ ./time nbody
      101.72 real         6.63 user        95.09 sys

From: $B;3K\(B $BLP(B <shigeru@iij.ad.jp>
Subject: [FreeBSD-users-jp 9247] Re: performance ...
Date: Wed, 29 Jan 1997 23:45:26 +0900

> $B;d$,=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

login shell $B$r(B bash $B$K$7$?>l9g$b7WB,$7$F$$$^$9!%0lNc$G$9!%(B

bash# /usr/bin/time ./nbody
      105.56 real       105.19 user         0.02 sys
bash# tcsh
tcsh% /usr/bin/time ./nbody
       48.71 real        48.63 user         0.02 sys

$B$3$N>l9g$b7WB,;~4V$N:F8=@-$O$"$j$^$9!%$d$O$j(B 1:2 $B$NHfN($G$9!%(B

From: $B;3K\(B $BLP(B <shigeru@iij.ad.jp>
Subject: [FreeBSD-users-jp 9247] Re: performance ...
Date: Wed, 29 Jan 1997 23:45:26 +0900

> $B>.NS(B> $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

$B$*$A$*$AJY6/$7$F9T$-$?$$$H;W$$$^$9!%;3K\$5$s$O$I$N$h$&$J652J=q$r;H$o$l(B
$B$F$$$?$N$G$7$g$&$+!)(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

$B;d$?$A$H$7$F$O(B CPU $B$N@-G=$H$$$&$h$j$O(B OS, compiler $B$b4^$a$?%7%9%F%`A4(B
$BBN$NBgBN$N%Q%U%)!<%^%s%9$,CN$j$?$$$N$G$9!%B(J*E*$G$9$N$G!%(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$3$l$O@'Hs;n$7$F$_$?$$$H9M$($F$$$^$9!%(B

---------------
Naoki Kobayashi
Department of Earth and Planetary Sciences, Tokyo Institute of Technology
2-12-1 Ookayama, Meguro, Tokyo 152, JAPAN
TEL: +81-3-5734-2717 FAX: +81-3-5499-4093 E-mail: shibata@geo.titech.ac.jp


