problem with mpi on stampede2 - ifort fflags? vincent combes https://tis.xsede.org/c/message_boards/find_message?p_l_id=&messageId=2803861 2021-09-07T17:40:06Z 2021-09-07T17:40:06Z

Dear all,<br /><br /><br />I am trying to run the ROMS ocean model on stampede2<br />I am able to get it run using openmp, but I am having trouble making it run using mpi.<br /><br />Compiling does <strong><u>not</u></strong> complain (using ifort / mpfi90 / mvapich2. see below for flags)<br /><br /><br />When I run however I get the following errors (depending on the mpfi90 flags):<br /><br />forrtl: severe (194): Run-Time Check Failure. The variable &#039;distribute_mod_mp_mp_reduce_1d_$SERROR&#039; is being used in &#039;distribute.f90(4812,19)&#039; without being defined<br />when I use the following fflags:<br />mpif90 -c -fp-model precise -heap-arrays -ip -O3 -traceback -check uninit<br /><br />or<br /><br />Fatal error in PMPI_Bcast: Message truncated, error stack:<br />PMPI_Bcast(1645)............: MPI_Bcast(buf=0x2b6bf2e372e0, count=20, MPI_DOUBLE_PRECISION, root=0, MPI_COMM_WORLD) failed<br />when I use the following fflags:<br />mpif90 -c -fp-model precise -heap-arrays -ip -O3<br /><br /><br />I am guessing that I cannot run it because I don&#039;t have the right flags for mpi.<br /><br /><br />any help and tips are greatly appreciated !<br /><br />Vincent

vincent combes 2021-09-07T17:40:06Z