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lihb734

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During submission of input files to Gaussian setup I have allocated the memory  %Mem=3GB (4 GB RAM installed on computer) but that is not used and only 98MB to 100MB is used which may be the default amount of memory to be used.
Please suggest solution
My input file is like this
#!/bin/csh
g09 <Butanol.log
%Chk=Butanol
%nproc=2
%mem=3GB
# opt freq b3lyp/6-31g geom=connectivity maxdisk=50GB

Butanol

0 2

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I'm using Gaussian 03 not 09, but I suppose settings are the same. Now if
I'm not wrong, %mem stands for the memory per core. Because %nproc=2 in
your case, Gaussian looks for 2 x 3 GB = 6 GB of memory, but your total
physical memory is 4 GB. So, that's why it used only 98-100 MB (default
memory setting is 6 MW which is roughly equal to 96 MB). Try %mem=1500MB,
this should work. With %nproc=2, this means that Gaussian will use 3GB of
memory. Also, try not to spend all of the memory for Gaussian, keep some
for the operating system and other stuff.

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heyo_123

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2Â¥2010-07-16 12:18:25
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ybyygu

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heyo_123(½ð±Ò+1):¹ÄÀø½»Á÷ £¡£¡£¡ 2010-07-17 08:02:54
¸ù¾ÝÎҵľ­Ñé, %memÓ¦¸ÃÖ¸µÄÊDz¢ÐмÆËãÌõ¼þϵÄ×ÜÄÚ´æ, µ¥¸öCPU·ÖµÄÄÚ´æÎª%mem/%nproc
Èç¹ûij¸ölink²»Äܲ¢ÐÐ, Ö»Äܵ¥CPUÔËÐеϰ, ×î¶àÄÜʹÓõÄÄÚ´æÒ²¾ÍÖ»ÓÐ%mem/%nproc
g09ÀïÓëg03Ïàͬ

[ Last edited by ybyygu on 2010-7-16 at 19:59 ]
3Â¥2010-07-16 19:57:33
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lihb734

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ÒýÓûØÌû:
Originally posted by ybyygu at 2010-07-16 19:57:33:
¸ù¾ÝÎҵľ­Ñé, %memÓ¦¸ÃÖ¸µÄÊDz¢ÐмÆËãÌõ¼þϵÄ×ÜÄÚ´æ, µ¥¸öCPU·ÖµÄÄÚ´æÎª%mem/%nproc
Èç¹ûij¸ölink²»Äܲ¢ÐÐ, Ö»Äܵ¥CPUÔËÐеϰ, ×î¶àÄÜʹÓõÄÄÚ´æÒ²¾ÍÖ»ÓÐ%mem/%nproc
g09ÀïÓëg03Ïàͬ

[ Last edited by y ...

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4Â¥2010-07-16 21:38:55
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abbott

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aylayl08(½ð±Ò+1): 2010-07-21 16:52:14
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