I have a question on datatypes in openmpi:
Is there an (easy?) way to use __float128 variables with openmpi?
Specifically, functions like
seem to give weird results with __float128.
Essentially all I found was
where they state
This is a quadruple precision, 128-bit long floating point number.
But as far as I have seen, MPI_LONG_DOUBLE is only used for long doubles.
The Open MPI Version is 1.6.3 and gcc is 4.7.3 on a x86_64 machine.
Any help or comment is very appreciated!