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MathGroup Archive 1998

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Re: Speed of writing in Mathematica 3.01


  • To: mathgroup@smc.vnet.net
  • Subject: [mg11905] Re: Speed of writing in Mathematica 3.01
  • From: "Igor Gribanov" <nuc@hotmail.com>
  • Date: Thu, 9 Apr 1998 00:33:07 -0400
  • Organization: BINP, Novosibirsk, Russia .
  • References: <6fskgl$grm@smc.vnet.net>

I use Mathematica on Windows NT 4.0 and Pentium 100 processor. It takes
awfully lot of time to peform writing:

In[5]:=
$Version
Out[5]=
"Microsoft Windows 3.0 (October 6, 1996)"

In[2]:=
a=Table[i,{i,1001}];

In[3]:=
Timing[
filename="d:/test.ascii";
output=OpenWrite[filename];
Do[Write[output,a[[i]]];,{i,1,1001}]; Close[output];]

Out[3]=
{26.969 Second,Null}

almost 27 seconds????
Why????
------------------------------------------------------

Russell Towle wrote in message <6fskgl$grm@smc.vnet.net>...
>>In[8]:=
>>Timing[
>>filename="Macintosh HD:test.ascii";
>>output=OpenWrite[filename];
>>Do[
>>      Write[output,a[[i]]];
>>,{i,1,1001}];
>>Close[output];
>>   ]
>>
>>Out[8]=
>>{23.4 Second,Null}
>
>I use version 2.2.2 on a kind of clunky older Mac, same write as above
>takes 2.88 seconds.
>
>Russell Towle
>Giant Gap Press:  books on California history, digital topographic maps
>P.O. Box 141
>Dutch Flat, California 95714
>------------------------------
>Voice:  (916) 389-2872
>e-mail:  rustybel@foothill.net
>------------------------------
>
>




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