On Mon, Oct 14, 2013 at 02:25:49PM -0500, Rob Latham wrote:

er, maybe I should say "qualified to review, once I pass your tests":

% ./test_type_contig.x 15 count = 32768 ocount = 32768 % ./test_type_contig.x 25 count = 33554432 ocount = 33554432 % ./test_type_contig.x 30 count = 1073741824 ocount = 1073741824 % ./test_type_contig.x 31 count = 2147483648 ocount = -2147483648

Heh. silent error vs violent explosion. I'll let you consider which mode is preferable while I go fix my branch.

good news is that I think everything "important" is happening correctly. It's just that when the status object is updated it's picking up an overflowed integer. status.count is MPI_Count big, so that's not the source of the overflow. will look once more at my mountain of clang -Wshorten-64-to-32 related warnings in the morning. ==rob -- Rob Latham Mathematics and Computer Science Division Argonne National Lab, IL USA