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That would probably be a better solution than what I mentioned above. Essentially it does the thing that we often said was possible, though we never did, which was to not actually initialize MPI_COMM_WORLD until we used it. In theory, that seemed like a good
idea, but it wouldn't actually help anything because it would still require MPI_COMM_WORLD to be created sooner or later because everything gets created from it.<br class="">
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<div class="">On Oct 31, 2017, at 10:57 AM, Dinan, James <<a href="mailto:james.dinan@intel.com" class="">james.dinan@intel.com</a>> wrote:</div>
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IIUC, this would break code that uses MPI_COMM_WORLD as a static initializer, e.g., to initialize a global variable like "MPI_Comm mycomm = MPI_COMM_WORLD".</div>
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Why can't the handles themselves be compile-time constants corresponding to objects that are not created until the library is initialized (how it works now)? Note that such handles are defined to be compile-time constants. I don't know that they necessarily
correspond to symbols that you can take an address of.</div>
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