Yes, Don, I apologize. The script is called "integrate" and the file I am searching through is called "density.mesh_index" this is how the command looks:

Code:

./integrate density.mesh_index 3 1008163

I realize it is easier to just put those numbers in the script but I was trying to divide up the work over many processors by having each one do a section of the file.
The script hasn't encountered anything in the input where they are all in range yet, so I can't say that I know it works (that is a good point, I will make a dummy input and check to see if it works and get back to you).
I have crossed some empty lines and I get a standard input error because of bc. I assume this is not fatal, since that makes "xbool" and empty string and the if statement can handle that. But will that slow it down?
Let me get back to you after I have ran the scenarios you suggested.
As far as the awk one liner, what kind of precision can that handle? I don't know, yet, that I will need 20 decimal places. I am running these at several different time steps and they will all be relative to the first. I just kept all the decimal places in case the change is small.

---------- Post updated at 11:56 PM ---------- Previous update was at 11:09 PM ----------

It works even with empty lines. I used the following input:

Code:

1 -1.0E+001 0.0E+000 -3.0E+000 2.5E+001
2 -2.0E-001 1.0E+000 -2.0E+000 2.5E+001
3 -8.4E+000 2.0E+000 -1.0E+002 2.5E+001
4 -1.40E+001 3.0E+000 0.0E+000 2.5E+001
5 -8.3E+000 4.0E+002 1.0E+000 2.5E+001

6 -1.60E+001 5.0E+000 -6.0E+000 2.5E+001
7 -1.70E+001 6.0E+000 -5.0E+000 2.5E+001
8 -8.0E+000 7.0E+000 -4.0E+000 2.5E+001

Here there are 3 lines out of range: 2 because of $x, 3 because of $z, and 5 because of $y.
The empty lines gave the following error, but it still worked.

Code:

(standard_in) 1: syntax error
(standard_in) 1: syntax error

I did find a typo in my input in the "totden" variable. I should have used "$dens" instead of "$den".
However, the question is about making it faster. Although the typo was fatal, the question still remains.
What kind of accuracy does the awk function give? I guess I could just try it out on it and see how it goes. I'll let you all know how that comes out. Again, thanks for the help.

---------- Post updated 12-03-13 at 12:04 AM ---------- Previous update was 12-02-13 at 11:56 PM ----------

Thank you MadeInGermany!!!! That one liner works fast!! Thank you Don for the corrections!! You guys saved me a headache!!