Hi, I've just built and tried the first run of Ray 2.3, and I seem to be 
getting an mpi error near the end of the assembly run. Here's the console 
output, is there any other error log you'd need to see? At the bottom is my 
mpiexec version.

Rank 0 freed 16777216 bytes from the path memory pool (chunks: 4)
Rank 1 freed 16777216 bytes from the path memory pool (chunks: 4)
Rank 6 freed 16777216 bytes from the path memory pool (chunks: 4)
Rank 2 freed 16777216 bytes from the path memory pool (chunks: 4)
Rank 3 freed 16777216 bytes from the path memory pool (chunks: 4)
Rank 4 freed 16777216 bytes from the path memory pool (chunks: 4)
Rank 5 freed 16777216 bytes from the path memory pool (chunks: 4)
[biolinux-Precision-WorkStation-T5500:6883] *** An error occurred in MPI_Isend
[biolinux-Precision-WorkStation-T5500:6883] *** on communicator MPI_COMM_WORLD
[biolinux-Precision-WorkStation-T5500:6883] *** MPI_ERR_RANK: invalid rank
[biolinux-Precision-WorkStation-T5500:6883] *** MPI_ERRORS_ARE_FATAL: your MPI 
job will now abort
--------------------------------------------------------------------------
mpiexec has exited due to process rank 1 with PID 6883 on
node biolinux-Precision-WorkStation-T5500 exiting improperly. There are two 
reasons this could occur:

1. this process did not call "init" before exiting, but others in
the job did. This can cause a job to hang indefinitely while it waits
for all processes to call "init". By rule, if one process calls "init",
then ALL processes must call "init" prior to termination.

2. this process called "init", but exited without calling "finalize".
By rule, all processes that call "init" MUST call "finalize" prior to
exiting or it will be considered an "abnormal termination"

This may have caused other processes in the application to be
terminated by signals sent by mpiexec (as reported here).
--------------------------------------------------------------------------
[biolinux-Precision-WorkStation-T5500:06881] 6 more processes have sent help 
message help-mpi-errors.txt / mpi_errors_are_fatal
[biolinux-Precision-WorkStation-T5500:06881] Set MCA parameter 
"orte_base_help_aggregate" to 0 to see all help / error messages

biolinux@biolinux-Precision-WorkStation-T5500[Ray-2.3.0] mpiexec                
             [ 3:08PM]
mpiexec (OpenRTE) 1.5.4



thanks!
-Scott

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