I receive the following message when I call MPI::COMM_WORLD.Gatherv with large data :
Assertion failed in file ../../i_rtc_cache.c at line 631: buf_end_palign > buf_start_palign
internal ABORT - process 1
[0:node0066] unexpected disconnect completion event from [1:node0067]
Assertion failed in file ../../dapl_conn_rc.c at line 1128: 0
internal ABORT - process 0
It seems that this assertion occurs only if the total received data is larger than 2^31 bytes, even if the numbers inside the arrays of displacement and number of received data are less than 2^31.
My array of displacement contains : 0 and 65450474
My array of number of received data contains : 65450474 and 295138626.
So the total number of received data is 360589100 and the object type is MPI::LONG used for the transfert.
I compile in 64 bit (the utility "file" reports "ELF 64-bit LSB executable").
Does MPI_GATHERV has a limit on the length of the array ?