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New Contributor I
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ifort optimization for speed

Dear all,

I am using the ifort compiler for windows from command line (without Visual Studio). I wrote my own makefile and I compile with the following options:

/fast #-ipo -O3 -no-prec-div -xHost

In this way the code executes much faster but sometimes I get different results due to a loss of precision

So my question is the following: is there a way to still improve the speed but keeping precision? So that the compiler would still optimize loops etc but not the precision

Thanks!

Best,

Alessandro

 

 

 

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Valued Contributor III
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