Dear Dirac experts,
has any one successfully built a 64-bit integer version of Openmpi-4.1.x (x=0,1,2, or 3) ? Use the usual procedure as outlined on the Dirac website, which always worked fine for Openmpi-4.0.x, but now I get the following use the gnu compilers (v10.2 or v11.2):
./configure CXX=g++ CC=gcc F77=gfortran FC=gfortran FFLAGS="-m64 -fdefault-integer-8" FCFLAGS="-m64 -fdefault-integer-8" CFLAGS=-m64 CXXFLAGS=-m64
Configure has detected that the size of a C integer (4 bytes) is
different than the size of a Fortran INTEGER (8 bytes).
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Thanks Juan, I could try Intel if I continue to be stuck. I'm a little nervous to have Intel-compiled Openmpi linked to Gnu-compiled Dirac, but maybe that would be fine. I'd certainly be interested to hear your experience with gcc if you get some time to test that.
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thank you very much, this is very helpful. Yesterday I found that even more recent 4.0.x versions have the same problem. I was able to build 4.0.2 using gcc 11.2 without problems, but I believe I need 4.1.x if I want to use the ExaTensor library. I had thought about using the usempi option you note below, but wasn't sure if that was compatible or not with Dirac. Great to know that this works ok.
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I was thinking of ExaTensor and not Exacorr but perhaps the former is only useful for the latter? I admit I haven't looked too much into it yet. You're right, MPICH is an option. I used to use it all the time, but switched to Openmpi quite a long time ago for reasons I can't quite remember any more :^)
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