{"id":161948,"date":"2023-01-25T07:28:15","date_gmt":"2023-01-25T07:28:15","guid":{"rendered":"\/knowledge\/forums\/topic\/intel-mpi-firewall-ports\/"},"modified":"2023-07-31T12:36:10","modified_gmt":"2023-07-31T12:36:10","slug":"intel-mpi-firewall-ports","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/intel-mpi-firewall-ports\/","title":{"rendered":"Intel MPI Firewall Ports"},"content":{"rendered":"<p>I_MPI_PORT_RANGE is equivalent to MPICH_PORT_RANGE and it is used for the Hydra Process Manager.   I_MPI_PORT_RANGE was introduced recently,  use MPICH_PORT_RANGE for legacy Intel MPI.                                                                                                                                             At startup Hydra checks for the first available open port and uses it for Hydra connections to the head node (you can check this with   I_MPI_HYDRA_DEBUG=enable).   If I_MPI_PORT_RANGE (or MPICH_PORT_RANGE)  is specified, Hydra will use only open ports from the specified range. But the launcher and fabric can use different ports.   So ssh (port 22), Hydra (I_MPI_PORT_RANGE) and DAPL SCM (if used) can use different ports.   We advise to open up ports from 30000-59999.<\/p>\n","protected":false},"template":"","class_list":["post-161948","topic","type-topic","status-publish","hentry","topic-tag-19-1","topic-tag-firewall","topic-tag-fluent-sys","topic-tag-hpc-parallel","topic-tag-installation-licensing-systems","topic-tag-intel-mpi","topic-tag-n-a","topic-tag-port"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_wp_page_template":["default"],"_bbp_forum_id":["153867"],"_bbp_last_active_time":["1-24-2023  20:20:11"],"_bbp_author_ip":["23.56.168.180"],"_btv_view_count":["3261"],"siebel_km_number":["2055687"],"product_version":["19.1"],"km_published_date":["2018-08-03T19:11:06.000Z"],"family":["Installation\/Licensing\/Systems"],"application_name":["FLUENT - SYS"]},"test":"articlesansys-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics\/161948","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics\/161948\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/media?parent=161948"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}