[Omp] OpenMP with different compilers

[Nils Smeds]

xxd104 at gmail.com said:
> Intels- ifort is 3-4 times slower than g77.

Specific claims such as the one above should in my opinion include a URL
pointer to the full report with run times, compiler and linker options used,
compiler versions used and preferably source code and sample input files. 

A second thing to keep in mind is that this particular comparison used the 
Intel compiler on AMD Opteron (x86_64). Were you using the EM64T version of 
the compiler? Were you using it in a way that generated x86_64 instructions?

/Nils
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