<div dir="ltr">I have recently built a cluster of Raspberry Pi computers. When this was made up of a master node and 2 slave nodes there was no issue calling mpiexec across the cluster. When I add an additional node to the cluster bringing the size to 1 master and 3 slave nodes I get an error of "Host File Verification Failed". I've tested password-less SSH on all nodes and it's working correctly.<br>
<br>I've done some googling of the error and set up and the only mention I've gotten to it was on this link here relating to OpenMPI - <a href="http://www.open-mpi.org/community/lists/users/2013/11/22940.php">http://www.open-mpi.org/community/lists/users/2013/11/22940.php</a><br>
<br>Is there a similar setup for MPICH and if so can someone link me to the correct documentation page?<div><br></div><div>Cheers</div><div><br></div><div>Scott</div></div>