thank you for your reply!
On 01.02.2014, at 21:28, Tim Prince wrote:
> Where openmpi refers to "portable C types" I would take long double to be the 80-bit hardware format you would have in a standard build of gcc for x86_64. You should be able to gain some insight by examining your openmpi build logs to see if it builds for both __float80 and __float128 (or neither).
Unfortunately, these are not my machines, so I do not have access to any build logs. But I will talk to the admins and/or
I try to compile openmpi myself.