{"id":161568,"date":"2023-01-25T07:16:20","date_gmt":"2023-01-25T07:16:20","guid":{"rendered":"\/knowledge\/forums\/topic\/error-999999-mpt_accept-error-accept-failed-invalid-argument-999999-mpt_accept-error-accept-failedmpi-application-rank-0-exited-before-mpi_finalize-with-status-2-the-fl-process-could-not-b\/"},"modified":"2023-07-31T12:35:31","modified_gmt":"2023-07-31T12:35:31","slug":"error-999999-mpt_accept-error-accept-failed-invalid-argument-999999-mpt_accept-error-accept-failedmpi-application-rank-0-exited-before-mpi_finalize-with-status-2-the-fl-process-could-not-b","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/error-999999-mpt_accept-error-accept-failed-invalid-argument-999999-mpt_accept-error-accept-failedmpi-application-rank-0-exited-before-mpi_finalize-with-status-2-the-fl-process-could-not-b\/","title":{"rendered":"Error: 999999: mpt_accept: error: accept failed: Invalid argument  999999: mpt_accept: error: accept failedMPI Application rank 0 exited before MPI_Finalize() with status 2  The fl process could not be started."},"content":{"rendered":"<p>Please check UDF. If UDF has values to be stored in UDM then you need to first create UDM. This error comes in during initialization if you do not define UDM. Please go to User Defined > User Defined Memory to define UDM. Once you define required UDM, please initialize the solution.<\/p>\n","protected":false},"template":"","class_list":["post-161568","topic","type-topic","status-publish","hentry","topic-tag-fluent","topic-tag-fluid-dynamics","topic-tag-general","topic-tag-general-fluent"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Please check UDF. If UDF has values to be stored in UDM then you need to first create UDM. This error comes in during initialization if you do not define UDM. Please go to User Defined &gt; User Defined Memory to define UDM. Once you define required UDM, please initialize the solution.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/error-999999-mpt_accept-error-accept-failed-invalid-argument-999999-mpt_accept-error-accept-failedmpi-application-rank-0-exited-before-mpi_finalize-with-status-2-the-fl-process-could-not-b\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.10\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_US\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Ansys Knowledge | Ansys Innovation Space\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Error: 999999: mpt_accept: error: accept failed: Invalid argument 999999: mpt_accept: error: accept failedMPI Application rank 0 exited before MPI_Finalize() with status 2 The fl process could not be started. | Ansys Knowledge\" \/>\n\t\t<meta property=\"og:description\" content=\"Please check UDF. If UDF has values to be stored in UDM then you need to first create UDM. This error comes in during initialization if you do not define UDM. Please go to User Defined &gt; User Defined Memory to define UDM. Once you define required UDM, please initialize the solution.\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/error-999999-mpt_accept-error-accept-failed-invalid-argument-999999-mpt_accept-error-accept-failedmpi-application-rank-0-exited-before-mpi_finalize-with-status-2-the-fl-process-could-not-b\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2023-01-25T07:16:20+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2023-07-31T12:35:31+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Error: 999999: mpt_accept: error: accept failed: Invalid argument 999999: mpt_accept: error: accept failedMPI Application rank 0 exited before MPI_Finalize() with status 2 The fl process could not be started. | Ansys Knowledge\" \/>\n\t\t<meta name=\"twitter:description\" content=\"Please check UDF. If UDF has values to be stored in UDM then you need to first create UDM. This error comes in during initialization if you do not define UDM. Please go to User Defined &gt; User Defined Memory to define UDM. Once you define required UDM, please initialize the solution.\" \/>\n\t\t<script type=\"application\/ld+json\" class=\"aioseo-schema\">\n\t\t\t{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic\\\/error-999999-mpt_accept-error-accept-failed-invalid-argument-999999-mpt_accept-error-accept-failedmpi-application-rank-0-exited-before-mpi_finalize-with-status-2-the-fl-process-could-not-b\\\/#breadcrumblist\",\"itemListElement\":[{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge#listItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/topics\\\/#listItem\",\"position\":2,\"name\":\"Topics\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/topics\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic-tag\\\/fluent\\\/#listItem\",\"name\":\"fluent\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic-tag\\\/fluent\\\/#listItem\",\"position\":3,\"name\":\"fluent\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic-tag\\\/fluent\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic\\\/error-999999-mpt_accept-error-accept-failed-invalid-argument-999999-mpt_accept-error-accept-failedmpi-application-rank-0-exited-before-mpi_finalize-with-status-2-the-fl-process-could-not-b\\\/#listItem\",\"name\":\"Error: 999999: mpt_accept: error: accept failed: Invalid argument  999999: mpt_accept: error: accept failedMPI Application rank 0 exited before MPI_Finalize() with status 2  The fl process could not be started.\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic\\\/error-999999-mpt_accept-error-accept-failed-invalid-argument-999999-mpt_accept-error-accept-failedmpi-application-rank-0-exited-before-mpi_finalize-with-status-2-the-fl-process-could-not-b\\\/#listItem\",\"position\":4,\"name\":\"Error: 999999: mpt_accept: error: accept failed: Invalid argument  999999: mpt_accept: error: accept failedMPI Application rank 0 exited before MPI_Finalize() with status 2  The fl process could not be started.\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic-tag\\\/fluent\\\/#listItem\",\"name\":\"fluent\"}}]},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/#organization\",\"name\":\"Ansys Knowledge\",\"description\":\"Ansys Innovation Space\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic\\\/error-999999-mpt_accept-error-accept-failed-invalid-argument-999999-mpt_accept-error-accept-failedmpi-application-rank-0-exited-before-mpi_finalize-with-status-2-the-fl-process-could-not-b\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic\\\/error-999999-mpt_accept-error-accept-failed-invalid-argument-999999-mpt_accept-error-accept-failedmpi-application-rank-0-exited-before-mpi_finalize-with-status-2-the-fl-process-could-not-b\\\/\",\"name\":\"Error: 999999: mpt_accept: error: accept failed: Invalid argument 999999: mpt_accept: error: accept failedMPI Application rank 0 exited before MPI_Finalize() with status 2 The fl process could not be started. | Ansys Knowledge\",\"description\":\"Please check UDF. If UDF has values to be stored in UDM then you need to first create UDM. This error comes in during initialization if you do not define UDM. Please go to User Defined > User Defined Memory to define UDM. Once you define required UDM, please initialize the solution.\",\"inLanguage\":\"en-US\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/#website\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic\\\/error-999999-mpt_accept-error-accept-failed-invalid-argument-999999-mpt_accept-error-accept-failedmpi-application-rank-0-exited-before-mpi_finalize-with-status-2-the-fl-process-could-not-b\\\/#breadcrumblist\"},\"datePublished\":\"2023-01-25T07:16:20+00:00\",\"dateModified\":\"2023-07-31T12:35:31+00:00\"},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/#website\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/\",\"name\":\"Ansys Knowledge\",\"description\":\"Ansys Innovation Space\",\"inLanguage\":\"en-US\",\"publisher\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/#organization\"}}]}\n\t\t<\/script>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"Error: 999999: mpt_accept: error: accept failed: Invalid argument 999999: mpt_accept: error: accept failedMPI Application rank 0 exited before MPI_Finalize() with status 2 The fl process could not be started. | Ansys Knowledge","description":"Please check UDF. If UDF has values to be stored in UDM then you need to first create UDM. This error comes in during initialization if you do not define UDM. Please go to User Defined > User Defined Memory to define UDM. Once you define required UDM, please initialize the solution.","canonical_url":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/error-999999-mpt_accept-error-accept-failed-invalid-argument-999999-mpt_accept-error-accept-failedmpi-application-rank-0-exited-before-mpi_finalize-with-status-2-the-fl-process-could-not-b\/","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"BreadcrumbList","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/error-999999-mpt_accept-error-accept-failed-invalid-argument-999999-mpt_accept-error-accept-failedmpi-application-rank-0-exited-before-mpi_finalize-with-status-2-the-fl-process-could-not-b\/#breadcrumblist","itemListElement":[{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge#listItem","position":1,"name":"Home","item":"https:\/\/innovationspace.ansys.com\/knowledge","nextItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/topics\/#listItem","name":"Topics"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/topics\/#listItem","position":2,"name":"Topics","item":"https:\/\/innovationspace.ansys.com\/knowledge\/topics\/","nextItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic-tag\/fluent\/#listItem","name":"fluent"},"previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge#listItem","name":"Home"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic-tag\/fluent\/#listItem","position":3,"name":"fluent","item":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic-tag\/fluent\/","nextItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/error-999999-mpt_accept-error-accept-failed-invalid-argument-999999-mpt_accept-error-accept-failedmpi-application-rank-0-exited-before-mpi_finalize-with-status-2-the-fl-process-could-not-b\/#listItem","name":"Error: 999999: mpt_accept: error: accept failed: Invalid argument  999999: mpt_accept: error: accept failedMPI Application rank 0 exited before MPI_Finalize() with status 2  The fl process could not be started."},"previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/topics\/#listItem","name":"Topics"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/error-999999-mpt_accept-error-accept-failed-invalid-argument-999999-mpt_accept-error-accept-failedmpi-application-rank-0-exited-before-mpi_finalize-with-status-2-the-fl-process-could-not-b\/#listItem","position":4,"name":"Error: 999999: mpt_accept: error: accept failed: Invalid argument  999999: mpt_accept: error: accept failedMPI Application rank 0 exited before MPI_Finalize() with status 2  The fl process could not be started.","previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic-tag\/fluent\/#listItem","name":"fluent"}}]},{"@type":"Organization","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/#organization","name":"Ansys Knowledge","description":"Ansys Innovation Space","url":"https:\/\/innovationspace.ansys.com\/knowledge\/"},{"@type":"WebPage","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/error-999999-mpt_accept-error-accept-failed-invalid-argument-999999-mpt_accept-error-accept-failedmpi-application-rank-0-exited-before-mpi_finalize-with-status-2-the-fl-process-could-not-b\/#webpage","url":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/error-999999-mpt_accept-error-accept-failed-invalid-argument-999999-mpt_accept-error-accept-failedmpi-application-rank-0-exited-before-mpi_finalize-with-status-2-the-fl-process-could-not-b\/","name":"Error: 999999: mpt_accept: error: accept failed: Invalid argument 999999: mpt_accept: error: accept failedMPI Application rank 0 exited before MPI_Finalize() with status 2 The fl process could not be started. | Ansys Knowledge","description":"Please check UDF. If UDF has values to be stored in UDM then you need to first create UDM. This error comes in during initialization if you do not define UDM. Please go to User Defined > User Defined Memory to define UDM. Once you define required UDM, please initialize the solution.","inLanguage":"en-US","isPartOf":{"@id":"https:\/\/innovationspace.ansys.com\/knowledge\/#website"},"breadcrumb":{"@id":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/error-999999-mpt_accept-error-accept-failed-invalid-argument-999999-mpt_accept-error-accept-failedmpi-application-rank-0-exited-before-mpi_finalize-with-status-2-the-fl-process-could-not-b\/#breadcrumblist"},"datePublished":"2023-01-25T07:16:20+00:00","dateModified":"2023-07-31T12:35:31+00:00"},{"@type":"WebSite","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/#website","url":"https:\/\/innovationspace.ansys.com\/knowledge\/","name":"Ansys Knowledge","description":"Ansys Innovation Space","inLanguage":"en-US","publisher":{"@id":"https:\/\/innovationspace.ansys.com\/knowledge\/#organization"}}]},"og:locale":"en_US","og:site_name":"Ansys Knowledge | Ansys Innovation Space","og:type":"article","og:title":"Error: 999999: mpt_accept: error: accept failed: Invalid argument 999999: mpt_accept: error: accept failedMPI Application rank 0 exited before MPI_Finalize() with status 2 The fl process could not be started. | Ansys Knowledge","og:description":"Please check UDF. If UDF has values to be stored in UDM then you need to first create UDM. This error comes in during initialization if you do not define UDM. Please go to User Defined &gt; User Defined Memory to define UDM. Once you define required UDM, please initialize the solution.","og:url":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/error-999999-mpt_accept-error-accept-failed-invalid-argument-999999-mpt_accept-error-accept-failedmpi-application-rank-0-exited-before-mpi_finalize-with-status-2-the-fl-process-could-not-b\/","article:published_time":"2023-01-25T07:16:20+00:00","article:modified_time":"2023-07-31T12:35:31+00:00","twitter:card":"summary_large_image","twitter:title":"Error: 999999: mpt_accept: error: accept failed: Invalid argument 999999: mpt_accept: error: accept failedMPI Application rank 0 exited before MPI_Finalize() with status 2 The fl process could not be started. | Ansys Knowledge","twitter:description":"Please check UDF. If UDF has values to be stored in UDM then you need to first create UDM. This error comes in during initialization if you do not define UDM. Please go to User Defined &gt; User Defined Memory to define UDM. Once you define required UDM, please initialize the solution."},"aioseo_meta_data":{"post_id":"161568","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"limit_modified_date":false,"created":"2025-10-17 19:13:15","updated":"2026-07-29 05:33:22","ai":null,"breadcrumb_settings":null,"seo_analyzer_scan_date":null},"aioseo_breadcrumb":"<div class=\"aioseo-breadcrumbs\"><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/innovationspace.ansys.com\/knowledge\" title=\"Home\">Home<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/innovationspace.ansys.com\/knowledge\/topics\/\" title=\"Topics\">Topics<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic-tag\/fluent\/\" title=\"fluent\">fluent<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\tError: 999999: mpt_accept: error: accept failed: Invalid argument  999999: mpt_accept: error: accept failedMPI Application rank 0 exited before MPI_Finalize() with status 2  The fl process could not be started.\n\t\t<\/span><\/div>","aioseo_breadcrumb_json":[{"label":"Home","link":"https:\/\/innovationspace.ansys.com\/knowledge"},{"label":"Topics","link":"https:\/\/innovationspace.ansys.com\/knowledge\/topics\/"},{"label":"fluent","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic-tag\/fluent\/"},{"label":"Error: 999999: mpt_accept: error: accept failed: Invalid argument  999999: mpt_accept: error: accept failedMPI Application rank 0 exited before MPI_Finalize() with status 2  The fl process could not be started.","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/error-999999-mpt_accept-error-accept-failed-invalid-argument-999999-mpt_accept-error-accept-failedmpi-application-rank-0-exited-before-mpi_finalize-with-status-2-the-fl-process-could-not-b\/"}],"acf":[],"custom_fields":[{"0":{"_wp_page_template":["default"],"_bbp_forum_id":["27796"],"_bbp_author_ip":["23.56.168.180"],"_bbp_last_active_time":["1-24-2023  20:20:24"],"_btv_view_count":["1681"],"siebel_km_number":["2058556"],"product_version":[""],"km_published_date":["2019-03-14T12:33:15.000Z"],"family":["Fluid Dynamics"],"application_name":["FLUENT"]},"test":"articlesansys-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics\/161568","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\/161568\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/media?parent=161568"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}